leetcode 题解

index	title	code	Difficulty
0001	Two Sum	Go JavaScript TypeScript	Easy
0002	Add Two Numbers	JavaScript TypeScript	Medium
0003	Longest Substring Without Repeating Characters	JavaScript TypeScript	Medium
0004	Median of Two Sorted Arrays	JavaScript	Hard
0005	Longest Palindromic Substring	JavaScript	Medium
0006	Zigzag Conversion	JavaScript	Medium
0007	Reverse Integer	JavaScript	Medium
0008	String to Integer (atoi)	JavaScript	Medium
0009	Palindrome Number	JavaScript TypeScript	Easy
0010	Regular Expression Matching	JavaScript TypeScript	Hard
0011	Container With Most Water	JavaScript	Medium
0012	Integer to Roman	JavaScript TypeScript	Medium
0013	Roman to Integer	JavaScript TypeScript	Easy
0014	Longest Common Prefix	JavaScript TypeScript	Easy
0015	3Sum	JavaScript	Medium
0016	3Sum Closest	JavaScript	Medium
0017	Letter Combinations of a Phone Number	JavaScript TypeScript	Medium
0018	4Sum	JavaScript	Medium
0019	Remove Nth Node From End of List	JavaScript TypeScript	Medium
0020	Valid Parentheses	JavaScript TypeScript	Easy
0021	Merge Two Sorted Lists	Go JavaScript TypeScript	Easy
0022	Generate Parentheses	JavaScript TypeScript	Medium
0023	Merge k Sorted Lists	JavaScript TypeScript	Hard
0024	Swap Nodes in Pairs	JavaScript TypeScript	Medium
0025	Reverse Nodes in k-Group	JavaScript TypeScript	Hard
0026	Remove Duplicates from Sorted Array	JavaScript TypeScript	Easy
0027	Remove Element	JavaScript TypeScript	Easy
0028	Find the Index of the First Occurrence in a String	JavaScript	Medium
0029	Divide Two Integers	JavaScript	Medium
0030	Substring with Concatenation of All Words		Hard
0031	Next Permutation	JavaScript	Medium
0032	Longest Valid Parentheses	JavaScript	Hard
0033	Search in Rotated Sorted Array	JavaScript	Medium
0034	Find First and Last Position of Element in Sorted Array	JavaScript TypeScript	Medium
0035	Search Insert Position	JavaScript TypeScript	Easy
0036	Valid Sudoku	JavaScript	Medium
0037	Sudoku Solver		Hard
0038	Count and Say	JavaScript TypeScript	Medium
0039	Combination Sum	JavaScript TypeScript	Medium
0040	Combination Sum II	JavaScript TypeScript	Medium
0041	First Missing Positive	JavaScript TypeScript	Hard
0042	Trapping Rain Water	JavaScript	Hard
0043	Multiply Strings	JavaScript	Medium
0044	Wildcard Matching	JavaScript	Hard
0045	Jump Game II	JavaScript TypeScript	Medium
0046	Permutations	JavaScript TypeScript	Medium
0047	Permutations II	JavaScript TypeScript	Medium
0048	Rotate Image	JavaScript TypeScript	Medium
0049	Group Anagrams	JavaScript TypeScript	Medium
0050	Pow(x, n)	JavaScript TypeScript	Medium
0051	N-Queens		Hard
0052	N-Queens II		Hard
0053	Maximum Subarray	JavaScript TypeScript	Medium
0054	Spiral Matrix	JavaScript TypeScript	Medium
0055	Jump Game	JavaScript TypeScript	Medium
0056	Merge Intervals	JavaScript	Medium
0057	Insert Interval	JavaScript	Medium
0058	Length of Last Word	JavaScript TypeScript	Easy
0059	Spiral Matrix II	JavaScript TypeScript	Medium
0060	Permutation Sequence	JavaScript	Hard
0061	Rotate List	JavaScript TypeScript	Medium
0062	Unique Paths	JavaScript TypeScript	Medium
0063	Unique Paths II	JavaScript TypeScript	Medium
0064	Minimum Path Sum	JavaScript TypeScript	Medium
0065	Valid Number	JavaScript	Hard
0066	Plus One	JavaScript TypeScript	Easy
0067	Add Binary	JavaScript TypeScript	Easy
0068	Text Justification		Hard
0069	Sqrt(x)	JavaScript TypeScript	Easy
0070	Climbing Stairs	JavaScript TypeScript	Easy
0071	Simplify Path	JavaScript	Medium
0072	Edit Distance	JavaScript TypeScript	Hard
0073	Set Matrix Zeroes	JavaScript TypeScript	Medium
0074	Search a 2D Matrix	JavaScript TypeScript	Medium
0075	Sort Colors	JavaScript TypeScript	Medium
0076	Minimum Window Substring	JavaScript	Hard
0077	Combinations	JavaScript TypeScript	Medium
0078	Subsets	JavaScript TypeScript	Medium
0079	Word Search	JavaScript TypeScript	Medium
0080	Remove Duplicates from Sorted Array II	JavaScript TypeScript	Medium
0081	Search in Rotated Sorted Array II	JavaScript	Medium
0082	Remove Duplicates from Sorted List II	JavaScript TypeScript	Medium
0083	Remove Duplicates from Sorted List	Go JavaScript TypeScript	Easy
0084	Largest Rectangle in Histogram		Hard
0085	Maximal Rectangle		Hard
0086	Partition List	JavaScript TypeScript	Medium
0087	Scramble String		Hard
0088	Merge Sorted Array	Go JavaScript TypeScript	Easy
0089	Gray Code	JavaScript	Medium
0090	Subsets II	JavaScript TypeScript	Medium
0091	Decode Ways	JavaScript TypeScript	Medium
0092	Reverse Linked List II	JavaScript TypeScript	Medium
0093	Restore IP Addresses	JavaScript	Medium
0094	Binary Tree Inorder Traversal	Go JavaScript TypeScript	Easy
0095	Unique Binary Search Trees II	JavaScript TypeScript	Medium
0096	Unique Binary Search Trees	JavaScript TypeScript	Medium
0097	Interleaving String	JavaScript	Medium
0098	Validate Binary Search Tree	JavaScript TypeScript	Medium
0099	Recover Binary Search Tree	JavaScript TypeScript	Medium
0100	Same Tree	Go JavaScript TypeScript	Easy
0101	Symmetric Tree	Go JavaScript TypeScript	Easy
0102	Binary Tree Level Order Traversal	Go JavaScript TypeScript	Medium
0103	Binary Tree Zigzag Level Order Traversal	JavaScript TypeScript	Medium
0104	Maximum Depth of Binary Tree	Go JavaScript TypeScript	Easy
0105	Construct Binary Tree from Preorder and Inorder Traversal	JavaScript TypeScript	Medium
0106	Construct Binary Tree from Inorder and Postorder Traversal	JavaScript TypeScript	Medium
0107	Binary Tree Level Order Traversal II	Go JavaScript TypeScript	Medium
0108	Convert Sorted Array to Binary Search Tree	Go JavaScript TypeScript	Easy
0109	Convert Sorted List to Binary Search Tree	JavaScript TypeScript	Medium
0110	Balanced Binary Tree	JavaScript TypeScript	Easy
0111	Minimum Depth of Binary Tree	JavaScript TypeScript	Easy
0112	Path Sum	Go JavaScript TypeScript	Easy
0113	Path Sum II	JavaScript TypeScript	Medium
0114	Flatten Binary Tree to Linked List	JavaScript TypeScript	Medium
0115	Distinct Subsequences	JavaScript	Hard
0116	Populating Next Right Pointers in Each Node	JavaScript TypeScript	Medium
0117	Populating Next Right Pointers in Each Node II	JavaScript TypeScript	Medium
0118	Pascal's Triangle	JavaScript TypeScript	Easy
0119	Pascal's Triangle II	JavaScript TypeScript	Easy
0120	Triangle	JavaScript TypeScript	Medium
0121	Best Time to Buy and Sell Stock	JavaScript TypeScript	Easy
0122	Best Time to Buy and Sell Stock II	JavaScript TypeScript	Medium
0123	Best Time to Buy and Sell Stock III	JavaScript	Hard
0124	Binary Tree Maximum Path Sum	JavaScript TypeScript	Hard
0125	Valid Palindrome	JavaScript TypeScript	Easy
0126	Word Ladder II		Hard
0127	Word Ladder	JavaScript	Hard
0128	Longest Consecutive Sequence	JavaScript	Medium
0129	Sum Root to Leaf Numbers	JavaScript TypeScript	Medium
0130	Surrounded Regions	JavaScript	Medium
0131	Palindrome Partitioning	JavaScript	Medium
0132	Palindrome Partitioning II	JavaScript TypeScript	Hard
0133	Clone Graph	JavaScript	Medium
0134	Gas Station	JavaScript	Medium
0135	Candy	JavaScript TypeScript	Hard
0136	Single Number	JavaScript TypeScript	Easy
0137	Single Number II	JavaScript	Medium
0138	Copy List with Random Pointer	JavaScript	Medium
0139	Word Break	JavaScript	Medium
0140	Word Break II	JavaScript	Hard
0141	Linked List Cycle	JavaScript TypeScript	Easy
0142	Linked List Cycle II	JavaScript TypeScript	Medium
0143	Reorder List	JavaScript TypeScript	Medium
0144	Binary Tree Preorder Traversal	Go JavaScript TypeScript	Easy
0145	Binary Tree Postorder Traversal	Go JavaScript TypeScript	Easy
0146	LRU Cache	JavaScript	Medium
0147	Insertion Sort List	JavaScript	Medium
0148	Sort List	JavaScript	Medium
0149	Max Points on a Line		Hard
0150	Evaluate Reverse Polish Notation	JavaScript TypeScript	Medium
0151	Reverse Words in a String	JavaScript TypeScript	Medium
0152	Maximum Product Subarray	JavaScript TypeScript	Medium
0153	Find Minimum in Rotated Sorted Array	JavaScript	Medium
0154	Find Minimum in Rotated Sorted Array II	JavaScript	Hard
0155	Min Stack	JavaScript TypeScript	Medium
0156	Binary Tree Upside Down	JavaScript TypeScript	Medium
0157	Read N Characters Given Read4	JavaScript	Easy
0158	Read N Characters Given read4 II - Call Multiple Times		Hard
0159	Longest Substring with At Most Two Distinct Characters	JavaScript	Medium
0160	Intersection of Two Linked Lists	JavaScript TypeScript	Easy
0161	One Edit Distance	JavaScript TypeScript	Medium
0162	Find Peak Element	JavaScript TypeScript	Medium
0163	Missing Ranges	JavaScript TypeScript	Easy
0164	Maximum Gap		Hard
0165	Compare Version Numbers	JavaScript TypeScript	Medium
0166	Fraction to Recurring Decimal	JavaScript	Medium
0167	Two Sum II - Input Array Is Sorted	JavaScript TypeScript	Medium
0168	Excel Sheet Column Title	JavaScript TypeScript	Easy
0169	Majority Element	JavaScript TypeScript	Easy
0170	Two Sum III - Data structure design	JavaScript TypeScript	Easy
0171	Excel Sheet Column Number	JavaScript TypeScript	Easy
0172	Factorial Trailing Zeroes	JavaScript TypeScript	Medium
0173	Binary Search Tree Iterator	JavaScript TypeScript	Medium
0174	Dungeon Game		Hard
0175	Combine Two Tables	Mysql	Easy
0176	Second Highest Salary	Mysql	Medium
0177	Nth Highest Salary	Mysql	Medium
0178	Rank Scores	Mysql	Medium
0179	Largest Number	JavaScript	Medium
0180	Consecutive Numbers	Mysql	Medium
0181	Employees Earning More Than Their Managers	Mysql	Easy
0182	Duplicate Emails	Mysql	Easy
0183	Customers Who Never Order	Mysql	Easy
0184	Department Highest Salary	Mysql	Medium
0185	Department Top Three Salaries		Hard
0186	Reverse Words in a String II	JavaScript TypeScript	Medium
0187	Repeated DNA Sequences	JavaScript	Medium
0188	Best Time to Buy and Sell Stock IV	JavaScript	Hard
0189	Rotate Array	JavaScript TypeScript	Medium
0190	Reverse Bits	JavaScript TypeScript	Easy
0191	Number of 1 Bits	JavaScript TypeScript	Easy
0192	Word Frequency		Medium
0193	Valid Phone Numbers		Easy
0194	Transpose File		Medium
0195	Tenth Line		Easy
0196	Delete Duplicate Emails	Mysql	Easy
0197	Rising Temperature	Mysql	Easy
0198	House Robber	JavaScript TypeScript	Medium
0199	Binary Tree Right Side View	JavaScript TypeScript	Medium
0200	Number of Islands	JavaScript TypeScript	Medium
0201	Bitwise AND of Numbers Range	JavaScript	Medium
0202	Happy Number	JavaScript TypeScript	Easy
0203	Remove Linked List Elements	Go JavaScript TypeScript	Easy
0204	Count Primes	JavaScript TypeScript	Medium
0205	Isomorphic Strings	JavaScript TypeScript	Easy
0206	Reverse Linked List	Go JavaScript TypeScript	Easy
0207	Course Schedule	JavaScript TypeScript	Medium
0208	Implement Trie (Prefix Tree)	JavaScript	Medium
0209	Minimum Size Subarray Sum	JavaScript TypeScript	Medium
0210	Course Schedule II	JavaScript TypeScript	Medium
0211	Design Add and Search Words Data Structure	JavaScript	Medium
0212	Word Search II		Hard
0213	House Robber II	JavaScript TypeScript	Medium
0214	Shortest Palindrome		Hard
0215	Kth Largest Element in an Array	JavaScript	Medium
0216	Combination Sum III	JavaScript TypeScript	Medium
0217	Contains Duplicate	JavaScript TypeScript	Easy
0218	The Skyline Problem		Hard
0219	Contains Duplicate II	JavaScript TypeScript	Easy
0220	Contains Duplicate III	JavaScript	Hard
0221	Maximal Square	JavaScript TypeScript	Medium
0222	Count Complete Tree Nodes	JavaScript TypeScript	Medium
0223	Rectangle Area	JavaScript	Medium
0224	Basic Calculator		Hard
0225	Implement Stack using Queues	JavaScript TypeScript	Easy
0226	Invert Binary Tree	Go JavaScript TypeScript	Easy
0227	Basic Calculator II		Medium
0228	Summary Ranges	JavaScript TypeScript	Easy
0229	Majority Element II	JavaScript	Medium
0230	Kth Smallest Element in a BST	JavaScript TypeScript	Medium
0231	Power of Two	JavaScript TypeScript	Easy
0232	Implement Queue using Stacks	JavaScript TypeScript	Easy
0233	Number of Digit One	JavaScript	Hard
0234	Palindrome Linked List	JavaScript TypeScript	Easy
0235	Lowest Common Ancestor of a Binary Search Tree	Go JavaScript TypeScript	Medium
0236	Lowest Common Ancestor of a Binary Tree	JavaScript TypeScript	Medium
0237	Delete Node in a Linked List	JavaScript TypeScript	Medium
0238	Product of Array Except Self	JavaScript TypeScript	Medium
0239	Sliding Window Maximum	JavaScript TypeScript	Hard
0240	Search a 2D Matrix II	JavaScript TypeScript	Medium
0241	Different Ways to Add Parentheses		Medium
0242	Valid Anagram	JavaScript TypeScript	Easy
0243	Shortest Word Distance	JavaScript TypeScript	Easy
0244	Shortest Word Distance II	JavaScript TypeScript	Medium
0245	Shortest Word Distance III	JavaScript TypeScript	Medium
0246	Strobogrammatic Number	JavaScript TypeScript	Easy
0247	Strobogrammatic Number II	JavaScript TypeScript	Medium
0248	Strobogrammatic Number III		Hard
0249	Group Shifted Strings		Medium
0250	Count Univalue Subtrees	JavaScript TypeScript	Medium
0251	Flatten 2D Vector	JavaScript TypeScript	Medium
0252	Meeting Rooms	JavaScript TypeScript	Easy
0253	Meeting Rooms II		Medium
0254	Factor Combinations		Medium
0255	Verify Preorder Sequence in Binary Search Tree	JavaScript	Medium
0256	Paint House		Medium
0257	Binary Tree Paths	JavaScript TypeScript	Easy
0258	Add Digits	JavaScript TypeScript	Easy
0259	3Sum Smaller	JavaScript TypeScript	Medium
0260	Single Number III	JavaScript TypeScript	Medium
0261	Graph Valid Tree		Medium
0262	Trips and Users		Hard
0263	Ugly Number	JavaScript TypeScript	Easy
0264	Ugly Number II	JavaScript	Medium
0265	Paint House II		Hard
0266	Palindrome Permutation	JavaScript TypeScript	Easy
0267	Palindrome Permutation II	JavaScript TypeScript	Medium
0268	Missing Number	JavaScript TypeScript	Easy
0269	Alien Dictionary		Hard
0270	Closest Binary Search Tree Value	JavaScript TypeScript	Easy
0271	Encode and Decode Strings	JavaScript	Medium
0272	Closest Binary Search Tree Value II	JavaScript TypeScript	Hard
0273	Integer to English Words	JavaScript	Hard
0274	H-Index	JavaScript TypeScript	Medium
0275	H-Index II	JavaScript TypeScript	Medium
0276	Paint Fence		Medium
0277	Find the Celebrity		Medium
0278	First Bad Version	JavaScript TypeScript	Easy
0279	Perfect Squares	JavaScript TypeScript	Medium
0280	Wiggle Sort	JavaScript TypeScript	Medium
0281	Zigzag Iterator	JavaScript TypeScript	Medium
0282	Expression Add Operators		Hard
0283	Move Zeroes	JavaScript TypeScript	Easy
0284	Peeking Iterator	JavaScript Python3 TypeScript	Medium
0285	Inorder Successor in BST	JavaScript TypeScript	Medium
0286	Walls and Gates		Medium
0287	Find the Duplicate Number	JavaScript TypeScript	Medium
0288	Unique Word Abbreviation	JavaScript TypeScript	Medium
0289	Game of Life	JavaScript	Medium
0290	Word Pattern	JavaScript TypeScript	Easy
0291	Word Pattern II		Medium
0292	Nim Game	JavaScript TypeScript	Easy
0293	Flip Game	JavaScript TypeScript	Easy
0294	Flip Game II		Medium
0295	Find Median from Data Stream	JavaScript	Hard
0296	Best Meeting Point		Hard
0297	Serialize and Deserialize Binary Tree	JavaScript TypeScript	Hard
0298	Binary Tree Longest Consecutive Sequence	JavaScript TypeScript	Medium
0299	Bulls and Cows	JavaScript	Medium
0300	Longest Increasing Subsequence	JavaScript TypeScript	Medium
0301	Remove Invalid Parentheses		Hard
0302	Smallest Rectangle Enclosing Black Pixels		Hard
0303	Range Sum Query - Immutable	JavaScript TypeScript	Easy
0304	Range Sum Query 2D - Immutable	JavaScript TypeScript	Medium
0305	Number of Islands II		Hard
0306	Additive Number	JavaScript	Medium
0307	Range Sum Query - Mutable	JavaScript TypeScript	Medium
0308	Range Sum Query 2D - Mutable		Hard
0309	Best Time to Buy and Sell Stock with Cooldown	JavaScript	Medium
0310	Minimum Height Trees	JavaScript	Medium
0311	Sparse Matrix Multiplication	JavaScript TypeScript	Medium
0312	Burst Balloons		Hard
0313	Super Ugly Number	JavaScript	Medium
0314	Binary Tree Vertical Order Traversal	JavaScript TypeScript	Medium
0315	Count of Smaller Numbers After Self	JavaScript	Hard
0316	Remove Duplicate Letters	JavaScript TypeScript	Medium
0317	Shortest Distance from All Buildings		Hard
0318	Maximum Product of Word Lengths	JavaScript TypeScript	Medium
0319	Bulb Switcher	JavaScript TypeScript	Medium
0320	Generalized Abbreviation	JavaScript TypeScript	Medium
0321	Create Maximum Number		Hard
0322	Coin Change	JavaScript TypeScript	Medium
0323	Number of Connected Components in an Undirected Graph	JavaScript TypeScript	Medium
0324	Wiggle Sort II		Medium
0325	Maximum Size Subarray Sum Equals k	JavaScript TypeScript	Medium
0326	Power of Three	JavaScript TypeScript	Easy
0327	Count of Range Sum		Hard
0328	Odd Even Linked List	JavaScript TypeScript	Medium
0329	Longest Increasing Path in a Matrix	JavaScript	Hard
0330	Patching Array		Hard
0331	Verify Preorder Serialization of a Binary Tree	JavaScript	Medium
0332	Reconstruct Itinerary		Hard
0333	Largest BST Subtree	JavaScript TypeScript	Medium
0334	Increasing Triplet Subsequence	JavaScript	Medium
0335	Self Crossing		Hard
0336	Palindrome Pairs		Hard
0337	House Robber III	JavaScript	Medium
0338	Counting Bits	JavaScript TypeScript	Easy
0339	Nested List Weight Sum	JavaScript TypeScript	Medium
0340	Longest Substring with At Most K Distinct Characters		Medium
0341	Flatten Nested List Iterator	JavaScript	Medium
0342	Power of Four	JavaScript TypeScript	Easy
0343	Integer Break	JavaScript TypeScript	Medium
0344	Reverse String	JavaScript TypeScript	Easy
0345	Reverse Vowels of a String	JavaScript TypeScript	Easy
0346	Moving Average from Data Stream	JavaScript TypeScript	Easy
0347	Top K Frequent Elements	JavaScript	Medium
0348	Design Tic-Tac-Toe		Medium
0349	Intersection of Two Arrays	JavaScript TypeScript	Easy
0350	Intersection of Two Arrays II	JavaScript TypeScript	Easy
0351	Android Unlock Patterns		Medium
0352	Data Stream as Disjoint Intervals	JavaScript	Hard
0353	Design Snake Game		Medium
0354	Russian Doll Envelopes	JavaScript	Hard
0355	Design Twitter		Medium
0356	Line Reflection		Medium
0357	Count Numbers with Unique Digits	JavaScript	Medium
0358	Rearrange String k Distance Apart		Hard
0359	Logger Rate Limiter	JavaScript TypeScript	Easy
0360	Sort Transformed Array	JavaScript	Medium
0361	Bomb Enemy		Medium
0362	Design Hit Counter	JavaScript TypeScript	Medium
0363	Max Sum of Rectangle No Larger Than K		Hard
0364	Nested List Weight Sum II	JavaScript TypeScript	Medium
0365	Water and Jug Problem		Medium
0366	Find Leaves of Binary Tree	JavaScript TypeScript	Medium
0367	Valid Perfect Square	JavaScript TypeScript	Easy
0368	Largest Divisible Subset		Medium
0369	Plus One Linked List	JavaScript TypeScript	Medium
0370	Range Addition	JavaScript TypeScript	Medium
0371	Sum of Two Integers	JavaScript TypeScript	Medium
0372	Super Pow	JavaScript	Medium
0373	Find K Pairs with Smallest Sums	JavaScript	Medium
0374	Guess Number Higher or Lower	JavaScript Python3 TypeScript	Easy
0375	Guess Number Higher or Lower II	JavaScript	Medium
0376	Wiggle Subsequence	JavaScript	Medium
0377	Combination Sum IV	JavaScript TypeScript	Medium
0378	Kth Smallest Element in a Sorted Matrix	JavaScript	Medium
0379	Design Phone Directory	JavaScript TypeScript	Medium
0380	Insert Delete GetRandom O(1)	JavaScript	Medium
0381	Insert Delete GetRandom O(1) - Duplicates allowed	JavaScript	Hard
0382	Linked List Random Node	JavaScript	Medium
0383	Ransom Note	JavaScript TypeScript	Easy
0384	Shuffle an Array	JavaScript TypeScript	Medium
0385	Mini Parser	JavaScript	Medium
0386	Lexicographical Numbers	JavaScript TypeScript	Medium
0387	First Unique Character in a String	JavaScript TypeScript	Easy
0388	Longest Absolute File Path	JavaScript	Medium
0389	Find the Difference	JavaScript TypeScript	Easy
0390	Elimination Game		Medium
0391	Perfect Rectangle		Hard
0392	Is Subsequence	JavaScript TypeScript	Easy
0393	UTF-8 Validation	JavaScript	Medium
0394	Decode String	JavaScript	Medium
0395	Longest Substring with At Least K Repeating Characters	JavaScript	Medium
0396	Rotate Function	JavaScript	Medium
0397	Integer Replacement	JavaScript	Medium
0398	Random Pick Index	JavaScript	Medium
0399	Evaluate Division	JavaScript TypeScript	Medium
0400	Nth Digit	JavaScript	Medium
0401	Binary Watch	JavaScript TypeScript	Easy
0402	Remove K Digits		Medium
0403	Frog Jump	JavaScript	Hard
0404	Sum of Left Leaves	JavaScript TypeScript	Easy
0405	Convert a Number to Hexadecimal	JavaScript TypeScript	Easy
0406	Queue Reconstruction by Height		Medium
0407	Trapping Rain Water II		Hard
0408	Valid Word Abbreviation	JavaScript TypeScript	Easy
0409	Longest Palindrome	JavaScript TypeScript	Easy
0410	Split Array Largest Sum	JavaScript	Hard
0411	Minimum Unique Word Abbreviation		Hard
0412	Fizz Buzz	JavaScript TypeScript	Easy
0413	Arithmetic Slices	JavaScript	Medium
0414	Third Maximum Number	JavaScript TypeScript	Easy
0415	Add Strings	JavaScript TypeScript	Easy
0416	Partition Equal Subset Sum	JavaScript TypeScript	Medium
0417	Pacific Atlantic Water Flow	JavaScript	Medium
0418	Sentence Screen Fitting		Medium
0419	Battleships in a Board	JavaScript	Medium
0420	Strong Password Checker		Hard
0421	Maximum XOR of Two Numbers in an Array	JavaScript	Medium
0422	Valid Word Square	JavaScript	Easy
0423	Reconstruct Original Digits from English	JavaScript	Medium
0424	Longest Repeating Character Replacement		Medium
0425	Word Squares		Hard
0426	Convert Binary Search Tree to Sorted Doubly Linked List	JavaScript	Medium
0427	Construct Quad Tree	JavaScript	Medium
0428	Serialize and Deserialize N-ary Tree	JavaScript	Hard
0429	N-ary Tree Level Order Traversal	JavaScript TypeScript	Medium
0430	Flatten a Multilevel Doubly Linked List	JavaScript	Medium
0431	Encode N-ary Tree to Binary Tree	JavaScript TypeScript	Hard
0432	All O`one Data Structure	JavaScript	Hard
0433	Minimum Genetic Mutation	JavaScript	Medium
0434	Number of Segments in a String	JavaScript TypeScript	Easy
0435	Non-overlapping Intervals	JavaScript	Medium
0436	Find Right Interval	JavaScript	Medium
0437	Path Sum III	JavaScript TypeScript	Medium
0438	Find All Anagrams in a String	JavaScript TypeScript	Medium
0439	Ternary Expression Parser		Medium
0440	K-th Smallest in Lexicographical Order		Hard
0441	Arranging Coins	JavaScript TypeScript	Easy
0442	Find All Duplicates in an Array	JavaScript TypeScript	Medium
0443	String Compression	JavaScript	Medium
0444	Sequence Reconstruction		Medium
0445	Add Two Numbers II	JavaScript TypeScript	Medium
0446	Arithmetic Slices II - Subsequence	JavaScript	Hard
0447	Number of Boomerangs	JavaScript	Medium
0448	Find All Numbers Disappeared in an Array	JavaScript TypeScript	Easy
0449	Serialize and Deserialize BST	JavaScript TypeScript	Medium
0450	Delete Node in a BST	JavaScript TypeScript	Medium
0451	Sort Characters By Frequency	JavaScript TypeScript	Medium
0452	Minimum Number of Arrows to Burst Balloons		Medium
0453	Minimum Moves to Equal Array Elements		Medium
0454	4Sum II	JavaScript	Medium
0455	Assign Cookies	JavaScript TypeScript	Easy
0456	132 Pattern	JavaScript	Medium
0457	Circular Array Loop		Medium
0458	Poor Pigs		Hard
0459	Repeated Substring Pattern	JavaScript TypeScript	Easy
0460	LFU Cache	JavaScript	Hard
0461	Hamming Distance	JavaScript TypeScript	Easy
0462	Minimum Moves to Equal Array Elements II	TypeScript	Medium
0463	Island Perimeter	JavaScript TypeScript	Easy
0464	Can I Win		Medium
0465	Optimal Account Balancing		Hard
0466	Count The Repetitions		Hard
0467	Unique Substrings in Wraparound String		Medium
0468	Validate IP Address	JavaScript	Medium
0469	Convex Polygon		Medium
0470	Implement Rand10() Using Rand7()	JavaScript TypeScript	Medium
0471	Encode String with Shortest Length		Hard
0472	Concatenated Words		Hard
0473	Matchsticks to Square	JavaScript	Medium
0474	Ones and Zeroes	JavaScript	Medium
0475	Heaters	JavaScript	Medium
0476	Number Complement	JavaScript TypeScript	Easy
0477	Total Hamming Distance	JavaScript	Medium
0478	Generate Random Point in a Circle	JavaScript TypeScript	Medium
0479	Largest Palindrome Product	JavaScript TypeScript	Hard
0480	Sliding Window Median	JavaScript	Hard
0481	Magical String		Medium
0482	License Key Formatting	JavaScript TypeScript	Easy
0483	Smallest Good Base		Hard
0484	Find Permutation		Medium
0485	Max Consecutive Ones	JavaScript TypeScript	Easy
0486	Predict the Winner	JavaScript	Medium
0487	Max Consecutive Ones II	JavaScript	Medium
0488	Zuma Game		Hard
0489	Robot Room Cleaner		Hard
0490	The Maze		Medium
0491	Non-decreasing Subsequences	JavaScript	Medium
0492	Construct the Rectangle	JavaScript TypeScript	Easy
0493	Reverse Pairs	JavaScript	Hard
0494	Target Sum	JavaScript	Medium
0495	Teemo Attacking	JavaScript TypeScript	Easy
0496	Next Greater Element I	JavaScript TypeScript	Easy
0497	Random Point in Non-overlapping Rectangles	JavaScript	Medium
0498	Diagonal Traverse	JavaScript	Medium
0499	The Maze III		Hard
0500	Keyboard Row	JavaScript TypeScript	Easy
0501	Find Mode in Binary Search Tree	JavaScript TypeScript	Easy
0502	IPO		Hard
0503	Next Greater Element II	JavaScript TypeScript	Medium
0504	Base 7	JavaScript TypeScript	Easy
0505	The Maze II		Medium
0506	Relative Ranks	JavaScript TypeScript	Easy
0507	Perfect Number	JavaScript TypeScript	Easy
0508	Most Frequent Subtree Sum	JavaScript TypeScript	Medium
0509	Fibonacci Number	JavaScript TypeScript	Easy
0510	Inorder Successor in BST II	JavaScript TypeScript	Medium
0511	Game Play Analysis I		Easy
0512	Game Play Analysis II		Easy
0513	Find Bottom Left Tree Value	JavaScript TypeScript	Medium
0514	Freedom Trail		Hard
0515	Find Largest Value in Each Tree Row	JavaScript TypeScript	Medium
0516	Longest Palindromic Subsequence		Medium
0517	Super Washing Machines		Hard
0518	Coin Change II	JavaScript TypeScript	Medium
0519	Random Flip Matrix	JavaScript	Medium
0520	Detect Capital	JavaScript TypeScript	Easy
0521	Longest Uncommon Subsequence I	JavaScript TypeScript	Easy
0522	Longest Uncommon Subsequence II	JavaScript	Medium
0523	Continuous Subarray Sum	JavaScript	Medium
0524	Longest Word in Dictionary through Deleting	JavaScript	Medium
0525	Contiguous Array	JavaScript	Medium
0526	Beautiful Arrangement	JavaScript	Medium
0527	Word Abbreviation		Hard
0528	Random Pick with Weight	JavaScript	Medium
0529	Minesweeper	JavaScript	Medium
0530	Minimum Absolute Difference in BST	JavaScript TypeScript	Easy
0531	Lonely Pixel I	JavaScript	Medium
0532	K-diff Pairs in an Array	JavaScript	Medium
0533	Lonely Pixel II		Medium
0534	Game Play Analysis III		Medium
0535	Encode and Decode TinyURL	JavaScript TypeScript	Medium
0536	Construct Binary Tree from String	JavaScript	Medium
0537	Complex Number Multiplication	JavaScript TypeScript	Medium
0538	Convert BST to Greater Tree	JavaScript TypeScript	Medium
0539	Minimum Time Difference	JavaScript TypeScript	Medium
0540	Single Element in a Sorted Array	JavaScript TypeScript	Medium
0541	Reverse String II	JavaScript TypeScript	Easy
0542	01 Matrix	JavaScript	Medium
0543	Diameter of Binary Tree	JavaScript TypeScript	Easy
0544	Output Contest Matches		Medium
0545	Boundary of Binary Tree		Medium
0546	Remove Boxes		Hard
0547	Number of Provinces	JavaScript TypeScript	Medium
0548	Split Array with Equal Sum		Hard
0549	Binary Tree Longest Consecutive Sequence II	JavaScript	Medium
0550	Game Play Analysis IV		Medium
0551	Student Attendance Record I	JavaScript TypeScript	Easy
0552	Student Attendance Record II	JavaScript	Hard
0553	Optimal Division		Medium
0554	Brick Wall	JavaScript	Medium
0555	Split Concatenated Strings		Medium
0556	Next Greater Element III	JavaScript	Medium
0557	Reverse Words in a String III	JavaScript TypeScript	Easy
0558	Logical OR of Two Binary Grids Represented as Quad-Trees	JavaScript	Medium
0559	Maximum Depth of N-ary Tree	JavaScript TypeScript	Easy
0560	Subarray Sum Equals K	JavaScript TypeScript	Medium
0561	Array Partition	JavaScript TypeScript	Easy
0562	Longest Line of Consecutive One in Matrix		Medium
0563	Binary Tree Tilt	JavaScript TypeScript	Easy
0564	Find the Closest Palindrome		Hard
0565	Array Nesting	JavaScript	Medium
0566	Reshape the Matrix	JavaScript TypeScript	Easy
0567	Permutation in String	JavaScript TypeScript	Medium
0568	Maximum Vacation Days		Hard
0569	Median Employee Salary		Hard
0570	Managers with at Least 5 Direct Reports		Medium
0571	Find Median Given Frequency of Numbers		Hard
0572	Subtree of Another Tree	JavaScript TypeScript	Easy
0573	Squirrel Simulation		Medium
0574	Winning Candidate		Medium
0575	Distribute Candies	JavaScript TypeScript	Easy
0576	Out of Boundary Paths	JavaScript	Medium
0577	Employee Bonus		Easy
0578	Get Highest Answer Rate Question		Medium
0579	Find Cumulative Salary of an Employee		Hard
0580	Count Student Number in Departments		Medium
0581	Shortest Unsorted Continuous Subarray	JavaScript	Medium
0582	Kill Process	JavaScript	Medium
0583	Delete Operation for Two Strings	JavaScript	Medium
0584	Find Customer Referee		Easy
0585	Investments in 2016		Medium
0586	Customer Placing the Largest Number of Orders		Easy
0587	Erect the Fence		Hard
0588	Design In-Memory File System		Hard
0589	N-ary Tree Preorder Traversal	JavaScript TypeScript	Easy
0590	N-ary Tree Postorder Traversal	JavaScript TypeScript	Easy
0591	Tag Validator		Hard
0592	Fraction Addition and Subtraction	JavaScript	Medium
0593	Valid Square	JavaScript TypeScript	Medium
0594	Longest Harmonious Subsequence	JavaScript TypeScript	Easy
0595	Big Countries	Mysql	Easy
0596	Classes More Than 5 Students	Mysql	Easy
0597	Friend Requests I: Overall Acceptance Rate		Easy
0598	Range Addition II	JavaScript TypeScript	Easy
0599	Minimum Index Sum of Two Lists	JavaScript TypeScript	Easy
0600	Non-negative Integers without Consecutive Ones		Hard
0601	Human Traffic of Stadium		Hard
0602	Friend Requests II: Who Has the Most Friends		Medium
0603	Consecutive Available Seats		Easy
0604	Design Compressed String Iterator	JavaScript TypeScript	Easy
0605	Can Place Flowers	JavaScript TypeScript	Easy
0606	Construct String from Binary Tree	JavaScript TypeScript	Easy
0607	Sales Person		Easy
0608	Tree Node		Medium
0609	Find Duplicate File in System	JavaScript	Medium
0610	Triangle Judgement		Easy
0611	Valid Triangle Number	JavaScript	Medium
0612	Shortest Distance in a Plane		Medium
0613	Shortest Distance in a Line		Easy
0614	Second Degree Follower		Medium
0615	Average Salary: Departments VS Company		Hard
0616	Add Bold Tag in String	JavaScript	Medium
0617	Merge Two Binary Trees	JavaScript TypeScript	Easy
0618	Students Report By Geography		Hard
0619	Biggest Single Number		Easy
0620	Not Boring Movies	Mysql	Easy
0621	Task Scheduler		Medium
0622	Design Circular Queue	JavaScript	Medium
0623	Add One Row to Tree	JavaScript TypeScript	Medium
0624	Maximum Distance in Arrays	JavaScript	Medium
0625	Minimum Factorization		Medium
0626	Exchange Seats	Mysql	Medium
0627	Swap Salary	Mysql	Easy
0628	Maximum Product of Three Numbers	JavaScript TypeScript	Easy
0629	K Inverse Pairs Array		Hard
0630	Course Schedule III		Hard
0631	Design Excel Sum Formula		Hard
0632	Smallest Range Covering Elements from K Lists		Hard
0633	Sum of Square Numbers	JavaScript TypeScript	Medium
0634	Find the Derangement of An Array		Medium
0635	Design Log Storage System		Medium
0636	Exclusive Time of Functions	JavaScript	Medium
0637	Average of Levels in Binary Tree	JavaScript TypeScript	Easy
0638	Shopping Offers		Medium
0639	Decode Ways II		Hard
0640	Solve the Equation	JavaScript	Medium
0641	Design Circular Deque	JavaScript	Medium
0642	Design Search Autocomplete System		Hard
0643	Maximum Average Subarray I	JavaScript TypeScript	Easy
0644	Maximum Average Subarray II		Hard
0645	Set Mismatch	JavaScript TypeScript	Easy
0646	Maximum Length of Pair Chain	JavaScript TypeScript	Medium
0647	Palindromic Substrings	JavaScript	Medium
0648	Replace Words	JavaScript	Medium
0649	Dota2 Senate		Medium
0650	2 Keys Keyboard	JavaScript	Medium
0651	4 Keys Keyboard		Medium
0652	Find Duplicate Subtrees	JavaScript	Medium
0653	Two Sum IV - Input is a BST	JavaScript TypeScript	Easy
0654	Maximum Binary Tree	JavaScript TypeScript	Medium
0655	Print Binary Tree	JavaScript TypeScript	Medium
0656	Coin Path		Hard
0657	Robot Return to Origin	JavaScript TypeScript	Easy
0658	Find K Closest Elements	JavaScript TypeScript	Medium
0659	Split Array into Consecutive Subsequences		Medium
0660	Remove 9		Hard
0661	Image Smoother	JavaScript TypeScript	Easy
0662	Maximum Width of Binary Tree	JavaScript TypeScript	Medium
0663	Equal Tree Partition		Medium
0664	Strange Printer		Hard
0665	Non-decreasing Array	JavaScript TypeScript	Medium
0666	Path Sum IV	JavaScript	Medium
0667	Beautiful Arrangement II		Medium
0668	Kth Smallest Number in Multiplication Table		Hard
0669	Trim a Binary Search Tree	JavaScript TypeScript	Medium
0670	Maximum Swap	JavaScript	Medium
0671	Second Minimum Node In a Binary Tree	JavaScript TypeScript	Easy
0672	Bulb Switcher II		Medium
0673	Number of Longest Increasing Subsequence	JavaScript	Medium
0674	Longest Continuous Increasing Subsequence	JavaScript TypeScript	Easy
0675	Cut Off Trees for Golf Event		Hard
0676	Implement Magic Dictionary	JavaScript	Medium
0677	Map Sum Pairs	JavaScript	Medium
0678	Valid Parenthesis String	JavaScript	Medium
0679	24 Game		Hard
0680	Valid Palindrome II	JavaScript TypeScript	Easy
0681	Next Closest Time	JavaScript	Medium
0682	Baseball Game	JavaScript TypeScript	Easy
0683	K Empty Slots		Hard
0684	Redundant Connection	JavaScript	Medium
0685	Redundant Connection II		Hard
0686	Repeated String Match	JavaScript	Medium
0687	Longest Univalue Path	JavaScript TypeScript	Medium
0688	Knight Probability in Chessboard		Medium
0689	Maximum Sum of 3 Non-Overlapping Subarrays		Hard
0690	Employee Importance	JavaScript Python3 TypeScript	Medium
0691	Stickers to Spell Word		Hard
0692	Top K Frequent Words	JavaScript	Medium
0693	Binary Number with Alternating Bits	JavaScript TypeScript	Easy
0694	Number of Distinct Islands		Medium
0695	Max Area of Island	JavaScript TypeScript	Medium
0696	Count Binary Substrings	JavaScript TypeScript	Easy
0697	Degree of an Array	JavaScript TypeScript	Easy
0698	Partition to K Equal Sum Subsets		Medium
0699	Falling Squares	TypeScript	Hard
0700	Search in a Binary Search Tree	Go JavaScript TypeScript	Easy
0701	Insert into a Binary Search Tree	JavaScript TypeScript	Medium
0702	Search in a Sorted Array of Unknown Size	JavaScript TypeScript	Medium
0703	Kth Largest Element in a Stream	JavaScript TypeScript	Easy
0704	Binary Search	JavaScript TypeScript	Easy
0705	Design HashSet	JavaScript	Easy
0706	Design HashMap	JavaScript	Easy
0707	Design Linked List	JavaScript TypeScript	Medium
0708	Insert into a Sorted Circular Linked List	JavaScript	Medium
0709	To Lower Case	JavaScript TypeScript	Easy
0710	Random Pick with Blacklist	JavaScript	Hard
0711	Number of Distinct Islands II		Hard
0712	Minimum ASCII Delete Sum for Two Strings	JavaScript	Medium
0713	Subarray Product Less Than K	JavaScript	Medium
0714	Best Time to Buy and Sell Stock with Transaction Fee	JavaScript	Medium
0715	Range Module	JavaScript	Hard
0716	Max Stack	JavaScript TypeScript	Hard
0717	1-bit and 2-bit Characters	JavaScript TypeScript	Easy
0718	Maximum Length of Repeated Subarray	JavaScript	Medium
0719	Find K-th Smallest Pair Distance		Hard
0720	Longest Word in Dictionary	JavaScript	Medium
0721	Accounts Merge	JavaScript	Medium
0722	Remove Comments	JavaScript	Medium
0723	Candy Crush		Medium
0724	Find Pivot Index	JavaScript TypeScript	Easy
0725	Split Linked List in Parts	JavaScript	Medium
0726	Number of Atoms	JavaScript	Hard
0727	Minimum Window Subsequence		Hard
0728	Self Dividing Numbers	JavaScript TypeScript	Easy
0729	My Calendar I	JavaScript	Medium
0730	Count Different Palindromic Subsequences		Hard
0731	My Calendar II	TypeScript	Medium
0732	My Calendar III	TypeScript	Hard
0733	Flood Fill	JavaScript TypeScript	Easy
0734	Sentence Similarity	JavaScript TypeScript	Easy
0735	Asteroid Collision	JavaScript TypeScript	Medium
0736	Parse Lisp Expression		Hard
0737	Sentence Similarity II	JavaScript TypeScript	Medium
0738	Monotone Increasing Digits	JavaScript	Medium
0739	Daily Temperatures	JavaScript TypeScript	Medium
0740	Delete and Earn	JavaScript	Medium
0741	Cherry Pickup		Hard
0742	Closest Leaf in a Binary Tree	JavaScript TypeScript	Medium
0743	Network Delay Time	JavaScript	Medium
0744	Find Smallest Letter Greater Than Target	JavaScript TypeScript	Easy
0745	Prefix and Suffix Search		Hard
0746	Min Cost Climbing Stairs	JavaScript TypeScript	Easy
0747	Largest Number At Least Twice of Others	JavaScript TypeScript	Easy
0748	Shortest Completing Word	JavaScript TypeScript	Easy
0749	Contain Virus		Hard
0750	Number Of Corner Rectangles		Medium
0751	IP to CIDR		Medium
0752	Open the Lock	JavaScript	Medium
0753	Cracking the Safe		Hard
0754	Reach a Number		Medium
0755	Pour Water		Medium
0756	Pyramid Transition Matrix	JavaScript	Medium
0757	Set Intersection Size At Least Two		Hard
0758	Bold Words in String	JavaScript	Medium
0759	Employee Free Time		Hard
0760	Find Anagram Mappings	JavaScript TypeScript	Easy
0761	Special Binary String		Hard
0762	Prime Number of Set Bits in Binary Representation	JavaScript TypeScript	Easy
0763	Partition Labels	JavaScript TypeScript	Medium
0764	Largest Plus Sign		Medium
0765	Couples Holding Hands		Hard
0766	Toeplitz Matrix	JavaScript TypeScript	Easy
0767	Reorganize String	JavaScript	Medium
0768	Max Chunks To Make Sorted II	JavaScript	Hard
0769	Max Chunks To Make Sorted	JavaScript	Medium
0770	Basic Calculator IV		Hard
0771	Jewels and Stones	JavaScript TypeScript	Easy
0772	Basic Calculator III		Hard
0773	Sliding Puzzle		Hard
0774	Minimize Max Distance to Gas Station		Hard
0775	Global and Local Inversions	JavaScript	Medium
0776	Split BST		Medium
0777	Swap Adjacent in LR String	JavaScript	Medium
0778	Swim in Rising Water		Hard
0779	K-th Symbol in Grammar	JavaScript TypeScript	Medium
0780	Reaching Points		Hard
0781	Rabbits in Forest	JavaScript	Medium
0782	Transform to Chessboard		Hard
0783	Minimum Distance Between BST Nodes	JavaScript TypeScript	Easy
0784	Letter Case Permutation	JavaScript TypeScript	Medium
0785	Is Graph Bipartite?	JavaScript TypeScript	Medium
0786	K-th Smallest Prime Fraction		Medium
0787	Cheapest Flights Within K Stops		Medium
0788	Rotated Digits	JavaScript	Medium
0789	Escape The Ghosts	JavaScript TypeScript	Medium
0790	Domino and Tromino Tiling		Medium
0791	Custom Sort String	JavaScript TypeScript	Medium
0792	Number of Matching Subsequences	JavaScript TypeScript	Medium
0793	Preimage Size of Factorial Zeroes Function		Hard
0794	Valid Tic-Tac-Toe State	JavaScript	Medium
0795	Number of Subarrays with Bounded Maximum	JavaScript	Medium
0796	Rotate String	JavaScript TypeScript	Easy
0797	All Paths From Source to Target	JavaScript TypeScript	Medium
0798	Smallest Rotation with Highest Score		Hard
0799	Champagne Tower	JavaScript	Medium
0800	Similar RGB Color	JavaScript TypeScript	Easy
0801	Minimum Swaps To Make Sequences Increasing		Hard
0802	Find Eventual Safe States	JavaScript	Medium
0803	Bricks Falling When Hit		Hard
0804	Unique Morse Code Words	JavaScript TypeScript	Easy
0805	Split Array With Same Average		Hard
0806	Number of Lines To Write String	JavaScript TypeScript	Easy
0807	Max Increase to Keep City Skyline	JavaScript TypeScript	Medium
0808	Soup Servings		Medium
0809	Expressive Words	JavaScript	Medium
0810	Chalkboard XOR Game		Hard
0811	Subdomain Visit Count	JavaScript TypeScript	Medium
0812	Largest Triangle Area	JavaScript	Easy
0813	Largest Sum of Averages	JavaScript	Medium
0814	Binary Tree Pruning	JavaScript TypeScript	Medium
0815	Bus Routes		Hard
0816	Ambiguous Coordinates	JavaScript	Medium
0817	Linked List Components	JavaScript	Medium
0818	Race Car		Hard
0819	Most Common Word	JavaScript TypeScript	Easy
0820	Short Encoding of Words	JavaScript	Medium
0821	Shortest Distance to a Character	JavaScript TypeScript	Easy
0822	Card Flipping Game	JavaScript	Medium
0823	Binary Trees With Factors	JavaScript	Medium
0824	Goat Latin	JavaScript TypeScript	Easy
0825	Friends Of Appropriate Ages	JavaScript	Medium
0826	Most Profit Assigning Work	JavaScript	Medium
0827	Making A Large Island		Hard
0828	Count Unique Characters of All Substrings of a Given String		Hard
0829	Consecutive Numbers Sum		Hard
0830	Positions of Large Groups	JavaScript TypeScript	Easy
0831	Masking Personal Information	JavaScript	Medium
0832	Flipping an Image	JavaScript TypeScript	Easy
0833	Find And Replace in String	JavaScript	Medium
0834	Sum of Distances in Tree	JavaScript	Hard
0835	Image Overlap		Medium
0836	Rectangle Overlap	JavaScript	Easy
0837	New 21 Game		Medium
0838	Push Dominoes	JavaScript	Medium
0839	Similar String Groups		Hard
0840	Magic Squares In Grid	JavaScript	Medium
0841	Keys and Rooms	JavaScript	Medium
0842	Split Array into Fibonacci Sequence	JavaScript	Medium
0843	Guess the Word		Hard
0844	Backspace String Compare	JavaScript TypeScript	Easy
0845	Longest Mountain in Array	JavaScript	Medium
0846	Hand of Straights	JavaScript TypeScript	Medium
0847	Shortest Path Visiting All Nodes		Hard
0848	Shifting Letters	JavaScript TypeScript	Medium
0849	Maximize Distance to Closest Person	JavaScript TypeScript	Medium
0850	Rectangle Area II		Hard
0851	Loud and Rich	JavaScript	Medium
0852	Peak Index in a Mountain Array	JavaScript TypeScript	Medium
0853	Car Fleet	JavaScript	Medium
0854	K-Similar Strings		Hard
0855	Exam Room		Medium
0856	Score of Parentheses	JavaScript TypeScript	Medium
0857	Minimum Cost to Hire K Workers		Hard
0858	Mirror Reflection		Medium
0859	Buddy Strings	JavaScript TypeScript	Easy
0860	Lemonade Change	JavaScript TypeScript	Easy
0861	Score After Flipping Matrix	JavaScript TypeScript	Medium
0862	Shortest Subarray with Sum at Least K	JavaScript	Hard
0863	All Nodes Distance K in Binary Tree	JavaScript TypeScript	Medium
0864	Shortest Path to Get All Keys		Hard
0865	Smallest Subtree with all the Deepest Nodes	JavaScript TypeScript	Medium
0866	Prime Palindrome	JavaScript TypeScript	Medium
0867	Transpose Matrix	JavaScript TypeScript	Easy
0868	Binary Gap	JavaScript TypeScript	Easy
0869	Reordered Power of 2	JavaScript TypeScript	Medium
0870	Advantage Shuffle	JavaScript	Medium
0871	Minimum Number of Refueling Stops		Hard
0872	Leaf-Similar Trees	JavaScript TypeScript	Easy
0873	Length of Longest Fibonacci Subsequence	JavaScript	Medium
0874	Walking Robot Simulation	JavaScript	Medium
0875	Koko Eating Bananas	JavaScript	Medium
0876	Middle of the Linked List	Go JavaScript TypeScript	Easy
0877	Stone Game	JavaScript	Medium
0878	Nth Magical Number		Hard
0879	Profitable Schemes		Hard
0880	Decoded String at Index		Medium
0881	Boats to Save People	JavaScript	Medium
0882	Reachable Nodes In Subdivided Graph		Hard
0883	Projection Area of 3D Shapes	JavaScript	Easy
0884	Uncommon Words from Two Sentences	JavaScript TypeScript	Easy
0885	Spiral Matrix III	JavaScript	Medium
0886	Possible Bipartition	JavaScript	Medium
0887	Super Egg Drop		Hard
0888	Fair Candy Swap	JavaScript TypeScript	Easy
0889	Construct Binary Tree from Preorder and Postorder Traversal	JavaScript	Medium
0890	Find and Replace Pattern	JavaScript	Medium
0891	Sum of Subsequence Widths		Hard
0892	Surface Area of 3D Shapes	JavaScript	Easy
0893	Groups of Special-Equivalent Strings	JavaScript TypeScript	Medium
0894	All Possible Full Binary Trees	JavaScript	Medium
0895	Maximum Frequency Stack	JavaScript TypeScript	Hard
0896	Monotonic Array	JavaScript TypeScript	Easy
0897	Increasing Order Search Tree	JavaScript TypeScript	Easy
0898	Bitwise ORs of Subarrays		Medium
0899	Orderly Queue		Hard
0900	RLE Iterator	JavaScript TypeScript	Medium
0901	Online Stock Span	JavaScript TypeScript	Medium
0902	Numbers At Most N Given Digit Set		Hard
0903	Valid Permutations for DI Sequence		Hard
0904	Fruit Into Baskets	JavaScript TypeScript	Medium
0905	Sort Array By Parity	JavaScript TypeScript	Easy
0906	Super Palindromes	TypeScript	Hard
0907	Sum of Subarray Minimums	JavaScript	Medium
0908	Smallest Range I	JavaScript TypeScript	Easy
0909	Snakes and Ladders		Medium
0910	Smallest Range II		Medium
0911	Online Election		Medium
0912	Sort an Array	JavaScript TypeScript	Medium
0913	Cat and Mouse		Hard
0914	X of a Kind in a Deck of Cards	JavaScript TypeScript	Easy
0915	Partition Array into Disjoint Intervals	JavaScript	Medium
0916	Word Subsets	JavaScript	Medium
0917	Reverse Only Letters	JavaScript TypeScript	Easy
0918	Maximum Sum Circular Subarray	JavaScript	Medium
0919	Complete Binary Tree Inserter	JavaScript TypeScript	Medium
0920	Number of Music Playlists		Hard
0921	Minimum Add to Make Parentheses Valid	JavaScript	Medium
0922	Sort Array By Parity II	JavaScript TypeScript	Easy
0923	3Sum With Multiplicity	JavaScript	Medium
0924	Minimize Malware Spread		Hard
0925	Long Pressed Name	JavaScript TypeScript	Easy
0926	Flip String to Monotone Increasing	JavaScript	Medium
0927	Three Equal Parts		Hard
0928	Minimize Malware Spread II		Hard
0929	Unique Email Addresses	JavaScript TypeScript	Easy
0930	Binary Subarrays With Sum	JavaScript	Medium
0931	Minimum Falling Path Sum	JavaScript TypeScript	Medium
0932	Beautiful Array		Medium
0933	Number of Recent Calls	JavaScript TypeScript	Easy
0934	Shortest Bridge	JavaScript	Medium
0935	Knight Dialer	JavaScript	Medium
0936	Stamping The Sequence		Hard
0937	Reorder Data in Log Files	JavaScript	Medium
0938	Range Sum of BST	JavaScript TypeScript	Easy
0939	Minimum Area Rectangle	JavaScript	Medium
0940	Distinct Subsequences II	JavaScript	Hard
0941	Valid Mountain Array	JavaScript TypeScript	Easy
0942	DI String Match	JavaScript	Easy
0943	Find the Shortest Superstring		Hard
0944	Delete Columns to Make Sorted	JavaScript TypeScript	Easy
0945	Minimum Increment to Make Array Unique	JavaScript	Medium
0946	Validate Stack Sequences	JavaScript TypeScript	Medium
0947	Most Stones Removed with Same Row or Column	JavaScript	Medium
0948	Bag of Tokens	JavaScript	Medium
0949	Largest Time for Given Digits	JavaScript	Medium
0950	Reveal Cards In Increasing Order	JavaScript	Medium
0951	Flip Equivalent Binary Trees	JavaScript TypeScript	Medium
0952	Largest Component Size by Common Factor		Hard
0953	Verifying an Alien Dictionary	JavaScript TypeScript	Easy
0954	Array of Doubled Pairs	JavaScript	Medium
0955	Delete Columns to Make Sorted II	JavaScript	Medium
0956	Tallest Billboard		Hard
0957	Prison Cells After N Days	JavaScript	Medium
0958	Check Completeness of a Binary Tree	JavaScript TypeScript	Medium
0959	Regions Cut By Slashes	JavaScript	Medium
0960	Delete Columns to Make Sorted III		Hard
0961	N-Repeated Element in Size 2N Array	JavaScript TypeScript	Easy
0962	Maximum Width Ramp	JavaScript TypeScript	Medium
0963	Minimum Area Rectangle II		Medium
0964	Least Operators to Express Number		Hard
0965	Univalued Binary Tree	Go JavaScript TypeScript	Easy
0966	Vowel Spellchecker	JavaScript	Medium
0967	Numbers With Same Consecutive Differences	JavaScript	Medium
0968	Binary Tree Cameras	JavaScript	Hard
0969	Pancake Sorting	JavaScript	Medium
0970	Powerful Integers	JavaScript TypeScript	Medium
0971	Flip Binary Tree To Match Preorder Traversal	JavaScript	Medium
0972	Equal Rational Numbers	JavaScript	Hard
0973	K Closest Points to Origin	JavaScript	Medium
0974	Subarray Sums Divisible by K	JavaScript	Medium
0975	Odd Even Jump	JavaScript	Hard
0976	Largest Perimeter Triangle	JavaScript	Easy
0977	Squares of a Sorted Array	JavaScript TypeScript	Easy
0978	Longest Turbulent Subarray	JavaScript TypeScript	Medium
0979	Distribute Coins in Binary Tree	JavaScript TypeScript	Medium
0980	Unique Paths III		Hard
0981	Time Based Key-Value Store	JavaScript	Medium
0982	Triples with Bitwise AND Equal To Zero		Hard
0983	Minimum Cost For Tickets	JavaScript	Medium
0984	String Without AAA or BBB	JavaScript	Medium
0985	Sum of Even Numbers After Queries	JavaScript TypeScript	Medium
0986	Interval List Intersections	JavaScript	Medium
0987	Vertical Order Traversal of a Binary Tree	JavaScript TypeScript	Hard
0988	Smallest String Starting From Leaf	JavaScript TypeScript	Medium
0989	Add to Array-Form of Integer	JavaScript TypeScript	Easy
0990	Satisfiability of Equality Equations	JavaScript	Medium
0991	Broken Calculator		Medium
0992	Subarrays with K Different Integers	JavaScript	Hard
0993	Cousins in Binary Tree	Go JavaScript TypeScript	Easy
0994	Rotting Oranges	JavaScript	Medium
0995	Minimum Number of K Consecutive Bit Flips		Hard
0996	Number of Squareful Arrays		Hard
0997	Find the Town Judge	JavaScript TypeScript	Easy
0998	Maximum Binary Tree II	JavaScript TypeScript	Medium
0999	Available Captures for Rook	JavaScript	Easy
1000	Minimum Cost to Merge Stones		Hard
1001	Grid Illumination	JavaScript	Hard
1002	Find Common Characters	JavaScript TypeScript	Easy
1003	Check If Word Is Valid After Substitutions	JavaScript TypeScript	Medium
1004	Max Consecutive Ones III	JavaScript	Medium
1005	Maximize Sum Of Array After K Negations	JavaScript TypeScript	Easy
1006	Clumsy Factorial	JavaScript TypeScript	Medium
1007	Minimum Domino Rotations For Equal Row	JavaScript	Medium
1008	Construct Binary Search Tree from Preorder Traversal	JavaScript TypeScript	Medium
1009	Complement of Base 10 Integer	JavaScript TypeScript	Easy
1010	Pairs of Songs With Total Durations Divisible by 60	JavaScript TypeScript	Medium
1011	Capacity To Ship Packages Within D Days	JavaScript	Medium
1012	Numbers With Repeated Digits		Hard
1013	Partition Array Into Three Parts With Equal Sum	JavaScript TypeScript	Easy
1014	Best Sightseeing Pair	JavaScript	Medium
1015	Smallest Integer Divisible by K	JavaScript TypeScript	Medium
1016	Binary String With Substrings Representing 1 To N	JavaScript TypeScript	Medium
1017	Convert to Base -2	JavaScript	Medium
1018	Binary Prefix Divisible By 5	JavaScript TypeScript	Easy
1019	Next Greater Node In Linked List	JavaScript TypeScript	Medium
1020	Number of Enclaves	JavaScript TypeScript	Medium
1021	Remove Outermost Parentheses	JavaScript TypeScript	Easy
1022	Sum of Root To Leaf Binary Numbers	Go JavaScript TypeScript	Easy
1023	Camelcase Matching	JavaScript	Medium
1024	Video Stitching	JavaScript	Medium
1025	Divisor Game	JavaScript TypeScript	Easy
1026	Maximum Difference Between Node and Ancestor	JavaScript TypeScript	Medium
1027	Longest Arithmetic Subsequence	JavaScript	Medium
1028	Recover a Tree From Preorder Traversal	JavaScript	Hard
1029	Two City Scheduling	JavaScript TypeScript	Medium
1030	Matrix Cells in Distance Order	JavaScript TypeScript	Easy
1031	Maximum Sum of Two Non-Overlapping Subarrays	JavaScript	Medium
1032	Stream of Characters	JavaScript	Hard
1033	Moving Stones Until Consecutive	JavaScript TypeScript	Medium
1034	Coloring A Border	JavaScript	Medium
1035	Uncrossed Lines		Medium
1036	Escape a Large Maze		Hard
1037	Valid Boomerang	JavaScript TypeScript	Easy
1038	Binary Search Tree to Greater Sum Tree	JavaScript TypeScript	Medium
1039	Minimum Score Triangulation of Polygon		Medium
1040	Moving Stones Until Consecutive II		Medium
1041	Robot Bounded In Circle	JavaScript	Medium
1042	Flower Planting With No Adjacent		Medium
1043	Partition Array for Maximum Sum	JavaScript	Medium
1044	Longest Duplicate Substring		Hard
1045	Customers Who Bought All Products		Medium
1046	Last Stone Weight	JavaScript TypeScript	Easy
1047	Remove All Adjacent Duplicates In String	JavaScript TypeScript	Easy
1048	Longest String Chain	JavaScript	Medium
1049	Last Stone Weight II	JavaScript	Medium
1050	Actors and Directors Who Cooperated At Least Three Times		Easy
1051	Height Checker	JavaScript TypeScript	Easy
1052	Grumpy Bookstore Owner	JavaScript	Medium
1053	Previous Permutation With One Swap	JavaScript	Medium
1054	Distant Barcodes	JavaScript	Medium
1055	Shortest Way to Form String		Medium
1056	Confusing Number	JavaScript TypeScript	Easy
1057	Campus Bikes		Medium
1058	Minimize Rounding Error to Meet Target		Medium
1059	All Paths from Source Lead to Destination		Medium
1060	Missing Element in Sorted Array	JavaScript TypeScript	Medium
1061	Lexicographically Smallest Equivalent String	TypeScript	Medium
1062	Longest Repeating Substring		Medium
1063	Number of Valid Subarrays		Hard
1064	Fixed Point	JavaScript TypeScript	Easy
1065	Index Pairs of a String	JavaScript TypeScript	Easy
1066	Campus Bikes II		Medium
1067	Digit Count in Range		Hard
1068	Product Sales Analysis I		Easy
1069	Product Sales Analysis II		Easy
1070	Product Sales Analysis III		Medium
1071	Greatest Common Divisor of Strings	JavaScript	Easy
1072	Flip Columns For Maximum Number of Equal Rows		Medium
1073	Adding Two Negabinary Numbers		Medium
1074	Number of Submatrices That Sum to Target		Hard
1075	Project Employees I		Easy
1076	Project Employees II		Easy
1077	Project Employees III		Medium
1078	Occurrences After Bigram	JavaScript TypeScript	Easy
1079	Letter Tile Possibilities	JavaScript	Medium
1080	Insufficient Nodes in Root to Leaf Paths	JavaScript	Medium
1081	Smallest Subsequence of Distinct Characters	JavaScript TypeScript	Medium
1082	Sales Analysis I		Easy
1083	Sales Analysis II		Easy
1084	Sales Analysis III		Easy
1085	Sum of Digits in the Minimum Number	JavaScript TypeScript	Easy
1086	High Five	JavaScript	Easy
1087	Brace Expansion	JavaScript	Medium
1088	Confusing Number II		Hard
1089	Duplicate Zeros	JavaScript TypeScript	Easy
1090	Largest Values From Labels	JavaScript	Medium
1091	Shortest Path in Binary Matrix	JavaScript	Medium
1092	Shortest Common Supersequence	JavaScript	Hard
1093	Statistics from a Large Sample	JavaScript	Medium
1094	Car Pooling	JavaScript	Medium
1095	Find in Mountain Array	JavaScript Python3	Hard
1096	Brace Expansion II	JavaScript	Hard
1097	Game Play Analysis V		Hard
1098	Unpopular Books		Medium
1099	Two Sum Less Than K	JavaScript TypeScript	Easy
1100	Find K-Length Substrings With No Repeated Characters	JavaScript	Medium
1101	The Earliest Moment When Everyone Become Friends	JavaScript	Medium
1102	Path With Maximum Minimum Value		Medium
1103	Distribute Candies to People	JavaScript	Easy
1104	Path In Zigzag Labelled Binary Tree	JavaScript	Medium
1105	Filling Bookcase Shelves		Medium
1106	Parsing A Boolean Expression	JavaScript	Hard
1107	New Users Daily Count		Medium
1108	Defanging an IP Address	JavaScript TypeScript	Easy
1109	Corporate Flight Bookings	JavaScript TypeScript	Medium
1110	Delete Nodes And Return Forest	JavaScript TypeScript	Medium
1111	Maximum Nesting Depth of Two Valid Parentheses Strings		Medium
1112	Highest Grade For Each Student		Medium
1113	Reported Posts		Easy
1114	Print in Order		Easy
1115	Print FooBar Alternately		Medium
1116	Print Zero Even Odd		Medium
1117	Building H2O		Medium
1118	Number of Days in a Month	JavaScript TypeScript	Easy
1119	Remove Vowels from a String	JavaScript TypeScript	Easy
1120	Maximum Average Subtree	JavaScript TypeScript	Medium
1121	Divide Array Into Increasing Sequences		Hard
1122	Relative Sort Array	JavaScript TypeScript	Easy
1123	Lowest Common Ancestor of Deepest Leaves	JavaScript TypeScript	Medium
1124	Longest Well-Performing Interval	JavaScript TypeScript	Medium
1125	Smallest Sufficient Team		Hard
1126	Active Businesses		Medium
1127	User Purchase Platform		Hard
1128	Number of Equivalent Domino Pairs	JavaScript TypeScript	Easy
1129	Shortest Path with Alternating Colors	JavaScript	Medium
1130	Minimum Cost Tree From Leaf Values	JavaScript	Medium
1131	Maximum of Absolute Value Expression	JavaScript	Medium
1132	Reported Posts II		Medium
1133	Largest Unique Number	JavaScript TypeScript	Easy
1134	Armstrong Number	JavaScript TypeScript	Easy
1135	Connecting Cities With Minimum Cost		Medium
1136	Parallel Courses		Medium
1137	N-th Tribonacci Number	JavaScript TypeScript	Easy
1138	Alphabet Board Path	JavaScript	Medium
1139	Largest 1-Bordered Square	JavaScript	Medium
1140	Stone Game II		Medium
1141	User Activity for the Past 30 Days I		Easy
1142	User Activity for the Past 30 Days II		Easy
1143	Longest Common Subsequence	JavaScript	Medium
1144	Decrease Elements To Make Array Zigzag	JavaScript	Medium
1145	Binary Tree Coloring Game	JavaScript	Medium
1146	Snapshot Array	JavaScript	Medium
1147	Longest Chunked Palindrome Decomposition		Hard
1148	Article Views I		Easy
1149	Article Views II		Medium
1150	Check If a Number Is Majority Element in a Sorted Array	JavaScript	Easy
1151	Minimum Swaps to Group All 1's Together		Medium
1152	Analyze User Website Visit Pattern	JavaScript	Medium
1153	String Transforms Into Another String		Hard
1154	Day of the Year	JavaScript TypeScript	Easy
1155	Number of Dice Rolls With Target Sum	JavaScript	Medium
1156	Swap For Longest Repeated Character Substring	JavaScript	Medium
1157	Online Majority Element In Subarray		Hard
1158	Market Analysis I		Medium
1159	Market Analysis II		Hard
1160	Find Words That Can Be Formed by Characters	JavaScript TypeScript	Easy
1161	Maximum Level Sum of a Binary Tree	JavaScript TypeScript	Medium
1162	As Far from Land as Possible	JavaScript	Medium
1163	Last Substring in Lexicographical Order		Hard
1164	Product Price at a Given Date		Medium
1165	Single-Row Keyboard	JavaScript	Easy
1166	Design File System	JavaScript	Medium
1167	Minimum Cost to Connect Sticks	JavaScript	Medium
1168	Optimize Water Distribution in a Village		Hard
1169	Invalid Transactions	JavaScript	Medium
1170	Compare Strings by Frequency of the Smallest Character	JavaScript TypeScript	Medium
1171	Remove Zero Sum Consecutive Nodes from Linked List	JavaScript	Medium
1172	Dinner Plate Stacks	JavaScript	Hard
1173	Immediate Food Delivery I		Easy
1174	Immediate Food Delivery II		Medium
1175	Prime Arrangements	JavaScript TypeScript	Easy
1176	Diet Plan Performance	JavaScript TypeScript	Easy
1177	Can Make Palindrome from Substring	JavaScript	Medium
1178	Number of Valid Words for Each Puzzle		Hard
1179	Reformat Department Table		Easy
1180	Count Substrings with Only One Distinct Letter	JavaScript TypeScript	Easy
1181	Before and After Puzzle	JavaScript	Medium
1182	Shortest Distance to Target Color	JavaScript	Medium
1183	Maximum Number of Ones		Hard
1184	Distance Between Bus Stops	JavaScript TypeScript	Easy
1185	Day of the Week	JavaScript TypeScript	Easy
1186	Maximum Subarray Sum with One Deletion	JavaScript	Medium
1187	Make Array Strictly Increasing		Hard
1188	Design Bounded Blocking Queue		Medium
1189	Maximum Number of Balloons	JavaScript TypeScript	Easy
1190	Reverse Substrings Between Each Pair of Parentheses	JavaScript	Medium
1191	K-Concatenation Maximum Sum	JavaScript	Medium
1192	Critical Connections in a Network		Hard
1193	Monthly Transactions I		Medium
1194	Tournament Winners		Hard
1195	Fizz Buzz Multithreaded		Medium
1196	How Many Apples Can You Put into the Basket	JavaScript TypeScript	Easy
1197	Minimum Knight Moves	JavaScript	Medium
1198	Find Smallest Common Element in All Rows	JavaScript	Medium
1199	Minimum Time to Build Blocks		Hard
1200	Minimum Absolute Difference	JavaScript TypeScript	Easy
1201	Ugly Number III	JavaScript	Medium
1202	Smallest String With Swaps	JavaScript TypeScript	Medium
1203	Sort Items by Groups Respecting Dependencies		Hard
1204	Last Person to Fit in the Bus		Medium
1205	Monthly Transactions II		Medium
1206	Design Skiplist		Hard
1207	Unique Number of Occurrences	JavaScript TypeScript	Easy
1208	Get Equal Substrings Within Budget	JavaScript TypeScript	Medium
1209	Remove All Adjacent Duplicates in String II	JavaScript	Medium
1210	Minimum Moves to Reach Target with Rotations	JavaScript	Hard
1211	Queries Quality and Percentage		Easy
1212	Team Scores in Football Tournament		Medium
1213	Intersection of Three Sorted Arrays	JavaScript	Easy
1214	Two Sum BSTs	JavaScript	Medium
1215	Stepping Numbers		Medium
1216	Valid Palindrome III		Hard
1217	Minimum Cost to Move Chips to The Same Position	JavaScript TypeScript	Easy
1218	Longest Arithmetic Subsequence of Given Difference	JavaScript	Medium
1219	Path with Maximum Gold	JavaScript	Medium
1220	Count Vowels Permutation	JavaScript	Hard
1221	Split a String in Balanced Strings	JavaScript TypeScript	Easy
1222	Queens That Can Attack the King	JavaScript	Medium
1223	Dice Roll Simulation		Hard
1224	Maximum Equal Frequency		Hard
1225	Report Contiguous Dates		Hard
1226	The Dining Philosophers		Medium
1227	Airplane Seat Assignment Probability	JavaScript TypeScript	Medium
1228	Missing Number In Arithmetic Progression	JavaScript TypeScript	Easy
1229	Meeting Scheduler	JavaScript	Medium
1230	Toss Strange Coins	JavaScript	Medium
1231	Divide Chocolate		Hard
1232	Check If It Is a Straight Line	JavaScript TypeScript	Easy
1233	Remove Sub-Folders from the Filesystem	JavaScript	Medium
1234	Replace the Substring for Balanced String		Medium
1235	Maximum Profit in Job Scheduling	JavaScript	Hard
1236	Web Crawler	JavaScript TypeScript	Medium
1237	Find Positive Integer Solution for a Given Equation	JavaScript	Medium
1238	Circular Permutation in Binary Representation		Medium
1239	Maximum Length of a Concatenated String with Unique Characters	JavaScript	Medium
1240	Tiling a Rectangle with the Fewest Squares		Hard
1241	Number of Comments per Post		Easy
1242	Web Crawler Multithreaded		Medium
1243	Array Transformation	JavaScript TypeScript	Easy
1244	Design A Leaderboard	JavaScript	Medium
1245	Tree Diameter		Medium
1246	Palindrome Removal		Hard
1247	Minimum Swaps to Make Strings Equal	JavaScript	Medium
1248	Count Number of Nice Subarrays	JavaScript	Medium
1249	Minimum Remove to Make Valid Parentheses	JavaScript	Medium
1250	Check If It Is a Good Array		Hard
1251	Average Selling Price		Easy
1252	Cells with Odd Values in a Matrix	JavaScript TypeScript	Easy
1253	Reconstruct a 2-Row Binary Matrix	JavaScript	Medium
1254	Number of Closed Islands	JavaScript	Medium
1255	Maximum Score Words Formed by Letters	JavaScript	Hard
1256	Encode Number	JavaScript	Medium
1257	Smallest Common Region	JavaScript	Medium
1258	Synonymous Sentences	Python3	Medium
1259	Handshakes That Don't Cross		Hard
1260	Shift 2D Grid	JavaScript	Easy
1261	Find Elements in a Contaminated Binary Tree	Python3	Medium
1262	Greatest Sum Divisible by Three	JavaScript TypeScript	Medium
1263	Minimum Moves to Move a Box to Their Target Location		Hard
1264	Page Recommendations		Medium
1265	Print Immutable Linked List in Reverse	JavaScript TypeScript	Medium
1266	Minimum Time Visiting All Points	JavaScript TypeScript	Easy
1267	Count Servers that Communicate	JavaScript	Medium
1268	Search Suggestions System	Python3	Medium
1269	Number of Ways to Stay in the Same Place After Some Steps	JavaScript	Hard
1270	All People Report to the Given Manager		Medium
1271	Hexspeak	Python3	Easy
1272	Remove Interval	Python3	Medium
1273	Delete Tree Nodes	JavaScript	Medium
1274	Number of Ships in a Rectangle		Hard
1275	Find Winner on a Tic Tac Toe Game	JavaScript	Easy
1276	Number of Burgers with No Waste of Ingredients	JavaScript TypeScript	Medium
1277	Count Square Submatrices with All Ones	JavaScript	Medium
1278	Palindrome Partitioning III		Hard
1279	Traffic Light Controlled Intersection		Easy
1280	Students and Examinations		Easy
1281	Subtract the Product and Sum of Digits of an Integer	JavaScript TypeScript	Easy
1282	Group the People Given the Group Size They Belong To	JavaScript TypeScript	Medium
1283	Find the Smallest Divisor Given a Threshold	JavaScript	Medium
1284	Minimum Number of Flips to Convert Binary Matrix to Zero Matrix		Hard
1285	Find the Start and End Number of Continuous Ranges		Medium
1286	Iterator for Combination	Python3	Medium
1287	Element Appearing More Than 25% In Sorted Array	JavaScript	Easy
1288	Remove Covered Intervals	JavaScript	Medium
1289	Minimum Falling Path Sum II	JavaScript	Hard
1290	Convert Binary Number in a Linked List to Integer	Go JavaScript TypeScript	Easy
1291	Sequential Digits	JavaScript	Medium
1292	Maximum Side Length of a Square with Sum Less than or Equal to Threshold		Medium
1293	Shortest Path in a Grid with Obstacles Elimination		Hard
1294	Weather Type in Each Country		Easy
1295	Find Numbers with Even Number of Digits	JavaScript TypeScript	Easy
1296	Divide Array in Sets of K Consecutive Numbers	JavaScript TypeScript	Medium
1297	Maximum Number of Occurrences of a Substring		Medium
1298	Maximum Candies You Can Get from Boxes		Hard
1299	Replace Elements with Greatest Element on Right Side	JavaScript TypeScript	Easy
1300	Sum of Mutated Array Closest to Target	JavaScript	Medium
1301	Number of Paths with Max Score	Python3	Hard
1302	Deepest Leaves Sum	JavaScript TypeScript	Medium
1303	Find the Team Size		Easy
1304	Find N Unique Integers Sum up to Zero	JavaScript TypeScript	Easy
1305	All Elements in Two Binary Search Trees	Python3 TypeScript	Medium
1306	Jump Game III	JavaScript	Medium
1307	Verbal Arithmetic Puzzle		Hard
1308	Running Total for Different Genders		Medium
1309	Decrypt String from Alphabet to Integer Mapping	JavaScript TypeScript	Easy
1310	XOR Queries of a Subarray	JavaScript TypeScript	Medium
1311	Get Watched Videos by Your Friends	JavaScript	Medium
1312	Minimum Insertion Steps to Make a String Palindrome	JavaScript	Hard
1313	Decompress Run-Length Encoded List	JavaScript TypeScript	Easy
1314	Matrix Block Sum	JavaScript	Medium
1315	Sum of Nodes with Even-Valued Grandparent	JavaScript	Medium
1316	Distinct Echo Substrings		Hard
1317	Convert Integer to the Sum of Two No-Zero Integers	JavaScript TypeScript	Easy
1318	Minimum Flips to Make a OR b Equal to c	JavaScript	Medium
1319	Number of Operations to Make Network Connected		Medium
1320	Minimum Distance to Type a Word Using Two Fingers		Hard
1321	Restaurant Growth		Medium
1322	Ads Performance		Easy
1323	Maximum 69 Number	JavaScript TypeScript	Easy
1324	Print Words Vertically	JavaScript TypeScript	Medium
1325	Delete Leaves With a Given Value	JavaScript TypeScript	Medium
1326	Minimum Number of Taps to Open to Water a Garden	JavaScript	Hard
1327	List the Products Ordered in a Period		Easy
1328	Break a Palindrome	JavaScript	Medium
1329	Sort the Matrix Diagonally	JavaScript	Medium
1330	Reverse Subarray To Maximize Array Value		Hard
1331	Rank Transform of an Array	JavaScript TypeScript	Easy
1332	Remove Palindromic Subsequences	JavaScript TypeScript	Easy
1333	Filter Restaurants by Vegan-Friendly, Price and Distance	JavaScript	Medium
1334	Find the City With the Smallest Number of Neighbors at a Threshold Distance	JavaScript	Medium
1335	Minimum Difficulty of a Job Schedule	JavaScript	Hard
1336	Number of Transactions per Visit		Hard
1337	The K Weakest Rows in a Matrix	JavaScript TypeScript	Easy
1338	Reduce Array Size to The Half	JavaScript TypeScript	Medium
1339	Maximum Product of Splitted Binary Tree	JavaScript	Medium
1340	Jump Game V	JavaScript	Hard
1341	Movie Rating		Medium
1342	Number of Steps to Reduce a Number to Zero	JavaScript TypeScript	Easy
1343	Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold	JavaScript	Medium
1344	Angle Between Hands of a Clock	JavaScript TypeScript	Medium
1345	Jump Game IV	JavaScript	Hard
1346	Check If N and Its Double Exist	JavaScript TypeScript	Easy
1347	Minimum Number of Steps to Make Two Strings Anagram	JavaScript TypeScript	Medium
1348	Tweet Counts Per Frequency	JavaScript	Medium
1349	Maximum Students Taking Exam		Hard
1350	Students With Invalid Departments		Easy
1351	Count Negative Numbers in a Sorted Matrix	JavaScript TypeScript	Easy
1352	Product of the Last K Numbers	JavaScript TypeScript	Medium
1353	Maximum Number of Events That Can Be Attended		Medium
1354	Construct Target Array With Multiple Sums		Hard
1355	Activity Participants		Medium
1356	Sort Integers by The Number of 1 Bits	JavaScript TypeScript	Easy
1357	Apply Discount Every n Orders	JavaScript TypeScript	Medium
1358	Number of Substrings Containing All Three Characters	JavaScript	Medium
1359	Count All Valid Pickup and Delivery Options	JavaScript	Hard
1360	Number of Days Between Two Dates	JavaScript TypeScript	Easy
1361	Validate Binary Tree Nodes	JavaScript	Medium
1362	Closest Divisors	JavaScript TypeScript	Medium
1363	Largest Multiple of Three	JavaScript TypeScript	Hard
1364	Number of Trusted Contacts of a Customer		Medium
1365	How Many Numbers Are Smaller Than the Current Number	JavaScript TypeScript	Easy
1366	Rank Teams by Votes	JavaScript	Medium
1367	Linked List in Binary Tree	JavaScript	Medium
1368	Minimum Cost to Make at Least One Valid Path in a Grid		Hard
1369	Get the Second Most Recent Activity		Hard
1370	Increasing Decreasing String	JavaScript	Easy
1371	Find the Longest Substring Containing Vowels in Even Counts	JavaScript	Medium
1372	Longest ZigZag Path in a Binary Tree	JavaScript	Medium
1373	Maximum Sum BST in Binary Tree	JavaScript TypeScript	Hard
1374	Generate a String With Characters That Have Odd Counts	JavaScript TypeScript	Easy
1375	Number of Times Binary String Is Prefix-Aligned	JavaScript	Medium
1376	Time Needed to Inform All Employees	JavaScript	Medium
1377	Frog Position After T Seconds	JavaScript	Hard
1378	Replace Employee ID With The Unique Identifier		Easy
1379	Find a Corresponding Node of a Binary Tree in a Clone of That Tree	JavaScript TypeScript	Easy
1380	Lucky Numbers in a Matrix	JavaScript TypeScript	Easy
1381	Design a Stack With Increment Operation	JavaScript TypeScript	Medium
1382	Balance a Binary Search Tree	JavaScript TypeScript	Medium
1383	Maximum Performance of a Team		Hard
1384	Total Sales Amount by Year		Hard
1385	Find the Distance Value Between Two Arrays	JavaScript TypeScript	Easy
1386	Cinema Seat Allocation	JavaScript	Medium
1387	Sort Integers by The Power Value	JavaScript	Medium
1388	Pizza With 3n Slices		Hard
1389	Create Target Array in the Given Order	JavaScript TypeScript	Easy
1390	Four Divisors	JavaScript	Medium
1391	Check if There is a Valid Path in a Grid	JavaScript	Medium
1392	Longest Happy Prefix		Hard
1393	Capital Gain/Loss		Medium
1394	Find Lucky Integer in an Array	JavaScript TypeScript	Easy
1395	Count Number of Teams	JavaScript	Medium
1396	Design Underground System	JavaScript	Medium
1397	Find All Good Strings		Hard
1398	Customers Who Bought Products A and B but Not C		Medium
1399	Count Largest Group	JavaScript TypeScript	Easy
1400	Construct K Palindrome Strings	JavaScript	Medium
1401	Circle and Rectangle Overlapping	JavaScript	Medium
1402	Reducing Dishes	JavaScript	Hard
1403	Minimum Subsequence in Non-Increasing Order	JavaScript	Easy
1404	Number of Steps to Reduce a Number in Binary Representation to One	JavaScript	Medium
1405	Longest Happy String		Medium
1406	Stone Game III	JavaScript	Hard
1407	Top Travellers		Easy
1408	String Matching in an Array	JavaScript TypeScript	Easy
1409	Queries on a Permutation With Key	JavaScript	Medium
1410	HTML Entity Parser	JavaScript	Medium
1411	Number of Ways to Paint N × 3 Grid		Hard
1412	Find the Quiet Students in All Exams		Hard
1413	Minimum Value to Get Positive Step by Step Sum	JavaScript TypeScript	Easy
1414	Find the Minimum Number of Fibonacci Numbers Whose Sum Is K	JavaScript	Medium
1415	The k-th Lexicographical String of All Happy Strings of Length n	JavaScript	Medium
1416	Restore The Array	JavaScript	Hard
1417	Reformat The String	JavaScript TypeScript	Easy
1418	Display Table of Food Orders in a Restaurant	JavaScript	Medium
1419	Minimum Number of Frogs Croaking	JavaScript	Medium
1420	Build Array Where You Can Find The Maximum Exactly K Comparisons		Hard
1421	NPV Queries		Easy
1422	Maximum Score After Splitting a String	JavaScript TypeScript	Easy
1423	Maximum Points You Can Obtain from Cards	JavaScript	Medium
1424	Diagonal Traverse II	JavaScript	Medium
1425	Constrained Subsequence Sum	JavaScript	Hard
1426	Counting Elements	JavaScript TypeScript	Easy
1427	Perform String Shifts	JavaScript TypeScript	Easy
1428	Leftmost Column with at Least a One	JavaScript	Medium
1429	First Unique Number	JavaScript	Medium
1430	Check If a String Is a Valid Sequence from Root to Leaves Path in a Binary Tree	JavaScript	Medium
1431	Kids With the Greatest Number of Candies	JavaScript TypeScript	Easy
1432	Max Difference You Can Get From Changing an Integer	JavaScript	Medium
1433	Check If a String Can Break Another String	JavaScript	Medium
1434	Number of Ways to Wear Different Hats to Each Other		Hard
1435	Create a Session Bar Chart		Easy
1436	Destination City	JavaScript TypeScript	Easy
1437	Check If All 1's Are at Least Length K Places Away	JavaScript TypeScript	Easy
1438	Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit	JavaScript	Medium
1439	Find the Kth Smallest Sum of a Matrix With Sorted Rows		Hard
1440	Evaluate Boolean Expression		Medium
1441	Build an Array With Stack Operations	JavaScript TypeScript	Medium
1442	Count Triplets That Can Form Two Arrays of Equal XOR	JavaScript	Medium
1443	Minimum Time to Collect All Apples in a Tree	JavaScript	Medium
1444	Number of Ways of Cutting a Pizza		Hard
1445	Apples & Oranges		Medium
1446	Consecutive Characters	JavaScript TypeScript	Easy
1447	Simplified Fractions	JavaScript	Medium
1448	Count Good Nodes in Binary Tree	JavaScript TypeScript	Medium
1449	Form Largest Integer With Digits That Add up to Target		Hard
1450	Number of Students Doing Homework at a Given Time	JavaScript TypeScript	Easy
1451	Rearrange Words in a Sentence	JavaScript	Medium
1452	People Whose List of Favorite Companies Is Not a Subset of Another List	JavaScript	Medium
1453	Maximum Number of Darts Inside of a Circular Dartboard		Hard
1454	Active Users		Medium
1455	Check If a Word Occurs As a Prefix of Any Word in a Sentence	JavaScript TypeScript	Easy
1456	Maximum Number of Vowels in a Substring of Given Length	JavaScript	Medium
1457	Pseudo-Palindromic Paths in a Binary Tree	JavaScript Python3 TypeScript	Medium
1458	Max Dot Product of Two Subsequences	JavaScript	Hard
1459	Rectangles Area		Medium
1460	Make Two Arrays Equal by Reversing Subarrays	JavaScript	Easy
1461	Check If a String Contains All Binary Codes of Size K	JavaScript	Medium
1462	Course Schedule IV	TypeScript	Medium
1463	Cherry Pickup II		Hard
1464	Maximum Product of Two Elements in an Array	JavaScript TypeScript	Easy
1465	Maximum Area of a Piece of Cake After Horizontal and Vertical Cuts	JavaScript	Medium
1466	Reorder Routes to Make All Paths Lead to the City Zero	JavaScript	Medium
1467	Probability of a Two Boxes Having The Same Number of Distinct Balls		Hard
1468	Calculate Salaries		Medium
1469	Find All The Lonely Nodes	JavaScript TypeScript	Easy
1470	Shuffle the Array	JavaScript TypeScript	Easy
1471	The k Strongest Values in an Array	JavaScript	Medium
1472	Design Browser History	JavaScript TypeScript	Medium
1473	Paint House III		Hard
1474	Delete N Nodes After M Nodes of a Linked List	JavaScript TypeScript	Easy
1475	Final Prices With a Special Discount in a Shop	JavaScript TypeScript	Easy
1476	Subrectangle Queries	JavaScript	Medium
1477	Find Two Non-overlapping Sub-arrays Each With Target Sum	JavaScript	Medium
1478	Allocate Mailboxes		Hard
1479	Sales by Day of the Week		Hard
1480	Running Sum of 1d Array	JavaScript TypeScript	Easy
1481	Least Number of Unique Integers after K Removals	JavaScript	Medium
1482	Minimum Number of Days to Make m Bouquets		Medium
1483	Kth Ancestor of a Tree Node		Hard
1484	Group Sold Products By The Date		Easy
1485	Clone Binary Tree With Random Pointer	JavaScript TypeScript	Medium
1486	XOR Operation in an Array	JavaScript TypeScript	Easy
1487	Making File Names Unique	JavaScript	Medium
1488	Avoid Flood in The City		Medium
1489	Find Critical and Pseudo-Critical Edges in Minimum Spanning Tree		Hard
1490	Clone N-ary Tree	JavaScript TypeScript	Medium
1491	Average Salary Excluding the Minimum and Maximum Salary	JavaScript TypeScript	Easy
1492	The kth Factor of n	JavaScript	Medium
1493	Longest Subarray of 1's After Deleting One Element	JavaScript	Medium
1494	Parallel Courses II		Hard
1495	Friendly Movies Streamed Last Month		Easy
1496	Path Crossing	JavaScript TypeScript	Easy
1497	Check If Array Pairs Are Divisible by k	JavaScript	Medium
1498	Number of Subsequences That Satisfy the Given Sum Condition	JavaScript	Medium
1499	Max Value of Equation		Hard
1500	Design a File Sharing System		Medium
1501	Countries You Can Safely Invest In		Medium
1502	Can Make Arithmetic Progression From Sequence	JavaScript TypeScript	Easy
1503	Last Moment Before All Ants Fall Out of a Plank	TypeScript	Medium
1504	Count Submatrices With All Ones		Medium
1505	Minimum Possible Integer After at Most K Adjacent Swaps On Digits		Hard
1506	Find Root of N-Ary Tree	JavaScript	Medium
1507	Reformat Date	JavaScript TypeScript	Easy
1508	Range Sum of Sorted Subarray Sums	JavaScript	Medium
1509	Minimum Difference Between Largest and Smallest Value in Three Moves	JavaScript	Medium
1510	Stone Game IV	JavaScript	Hard
1511	Customer Order Frequency		Easy
1512	Number of Good Pairs	JavaScript TypeScript	Easy
1513	Number of Substrings With Only 1s	JavaScript TypeScript	Medium
1514	Path with Maximum Probability	JavaScript	Medium
1515	Best Position for a Service Centre		Hard
1516	Move Sub-Tree of N-Ary Tree		Hard
1517	Find Users With Valid E-Mails		Easy
1518	Water Bottles	JavaScript TypeScript	Easy
1519	Number of Nodes in the Sub-Tree With the Same Label	JavaScript	Medium
1520	Maximum Number of Non-Overlapping Substrings		Hard
1521	Find a Value of a Mysterious Function Closest to Target		Hard
1522	Diameter of N-Ary Tree	JavaScript TypeScript	Medium
1523	Count Odd Numbers in an Interval Range	JavaScript TypeScript	Easy
1524	Number of Sub-arrays With Odd Sum	JavaScript TypeScript	Medium
1525	Number of Good Ways to Split a String	JavaScript	Medium
1526	Minimum Number of Increments on Subarrays to Form a Target Array	JavaScript	Hard
1527	Patients With a Condition		Easy
1528	Shuffle String	JavaScript TypeScript	Easy
1529	Minimum Suffix Flips	JavaScript	Medium
1530	Number of Good Leaf Nodes Pairs	JavaScript	Medium
1531	String Compression II		Hard
1532	The Most Recent Three Orders		Medium
1533	Find the Index of the Large Integer		Medium
1534	Count Good Triplets	JavaScript TypeScript	Easy
1535	Find the Winner of an Array Game	JavaScript	Medium
1536	Minimum Swaps to Arrange a Binary Grid		Medium
1537	Get the Maximum Score	JavaScript	Hard
1538	Guess the Majority in a Hidden Array		Medium
1539	Kth Missing Positive Number	JavaScript	Easy
1540	Can Convert String in K Moves	JavaScript	Medium
1541	Minimum Insertions to Balance a Parentheses String	JavaScript	Medium
1542	Find Longest Awesome Substring	JavaScript	Hard
1543	Fix Product Name Format		Easy
1544	Make The String Great	JavaScript TypeScript	Easy
1545	Find Kth Bit in Nth Binary String	JavaScript	Medium
1546	Maximum Number of Non-Overlapping Subarrays With Sum Equals Target		Medium
1547	Minimum Cost to Cut a Stick		Hard
1548	The Most Similar Path in a Graph		Hard
1549	The Most Recent Orders for Each Product		Medium
1550	Three Consecutive Odds	JavaScript TypeScript	Easy
1551	Minimum Operations to Make Array Equal	JavaScript	Medium
1552	Magnetic Force Between Two Balls	TypeScript	Medium
1553	Minimum Number of Days to Eat N Oranges	JavaScript	Hard
1554	Strings Differ by One Character	JavaScript	Medium
1555	Bank Account Summary		Medium
1556	Thousand Separator	JavaScript TypeScript	Easy
1557	Minimum Number of Vertices to Reach All Nodes	JavaScript	Medium
1558	Minimum Numbers of Function Calls to Make Target Array	JavaScript	Medium
1559	Detect Cycles in 2D Grid		Medium
1560	Most Visited Sector in a Circular Track	JavaScript	Easy
1561	Maximum Number of Coins You Can Get	JavaScript TypeScript	Medium
1562	Find Latest Group of Size M		Medium
1563	Stone Game V		Hard
1564	Put Boxes Into the Warehouse I		Medium
1565	Unique Orders and Customers Per Month		Easy
1566	Detect Pattern of Length M Repeated K or More Times	JavaScript TypeScript	Easy
1567	Maximum Length of Subarray With Positive Product	JavaScript TypeScript	Medium
1568	Minimum Number of Days to Disconnect Island		Hard
1569	Number of Ways to Reorder Array to Get Same BST		Hard
1570	Dot Product of Two Sparse Vectors	JavaScript TypeScript	Medium
1571	Warehouse Manager		Easy
1572	Matrix Diagonal Sum	JavaScript TypeScript	Easy
1573	Number of Ways to Split a String		Medium
1574	Shortest Subarray to be Removed to Make Array Sorted		Medium
1575	Count All Possible Routes		Hard
1576	Replace All ?'s to Avoid Consecutive Repeating Characters	JavaScript	Easy
1577	Number of Ways Where Square of Number Is Equal to Product of Two Numbers	JavaScript	Medium
1578	Minimum Time to Make Rope Colorful	JavaScript	Medium
1579	Remove Max Number of Edges to Keep Graph Fully Traversable		Hard
1580	Put Boxes Into the Warehouse II		Medium
1581	Customer Who Visited but Did Not Make Any Transactions		Easy
1582	Special Positions in a Binary Matrix	JavaScript TypeScript	Easy
1583	Count Unhappy Friends		Medium
1584	Min Cost to Connect All Points		Medium
1585	Check If String Is Transformable With Substring Sort Operations		Hard
1586	Binary Search Tree Iterator II	JavaScript	Medium
1587	Bank Account Summary II		Easy
1588	Sum of All Odd Length Subarrays	JavaScript TypeScript	Easy
1589	Maximum Sum Obtained of Any Permutation	JavaScript TypeScript	Medium
1590	Make Sum Divisible by P		Medium
1591	Strange Printer II		Hard
1592	Rearrange Spaces Between Words	JavaScript TypeScript	Easy
1593	Split a String Into the Max Number of Unique Substrings	JavaScript TypeScript	Medium
1594	Maximum Non Negative Product in a Matrix		Medium
1595	Minimum Cost to Connect Two Groups of Points		Hard
1596	The Most Frequently Ordered Products for Each Customer		Medium
1597	Build Binary Expression Tree From Infix Expression		Hard
1598	Crawler Log Folder	JavaScript TypeScript	Easy
1599	Maximum Profit of Operating a Centennial Wheel		Medium
1600	Throne Inheritance		Medium
1601	Maximum Number of Achievable Transfer Requests		Hard
1602	Find Nearest Right Node in Binary Tree	JavaScript TypeScript	Medium
1603	Design Parking System	JavaScript TypeScript	Easy
1604	Alert Using Same Key-Card Three or More Times in a One Hour Period	JavaScript TypeScript	Medium
1605	Find Valid Matrix Given Row and Column Sums		Medium
1606	Find Servers That Handled Most Number of Requests		Hard
1607	Sellers With No Sales		Easy
1608	Special Array With X Elements Greater Than or Equal X	JavaScript TypeScript	Easy
1609	Even Odd Tree	JavaScript TypeScript	Medium
1610	Maximum Number of Visible Points		Hard
1611	Minimum One Bit Operations to Make Integers Zero		Hard
1612	Check If Two Expression Trees are Equivalent	JavaScript	Medium
1613	Find the Missing IDs		Medium
1614	Maximum Nesting Depth of the Parentheses	JavaScript TypeScript	Easy
1615	Maximal Network Rank		Medium
1616	Split Two Strings to Make Palindrome	JavaScript	Medium
1617	Count Subtrees With Max Distance Between Cities		Hard
1618	Maximum Font to Fit a Sentence in a Screen	JavaScript	Medium
1619	Mean of Array After Removing Some Elements	JavaScript TypeScript	Easy
1620	Coordinate With Maximum Network Quality		Medium
1621	Number of Sets of K Non-Overlapping Line Segments		Medium
1622	Fancy Sequence		Hard
1623	All Valid Triplets That Can Represent a Country		Easy
1624	Largest Substring Between Two Equal Characters	JavaScript	Easy
1625	Lexicographically Smallest String After Applying Operations		Medium
1626	Best Team With No Conflicts		Medium
1627	Graph Connectivity With Threshold		Hard
1628	Design an Expression Tree With Evaluate Function		Medium
1629	Slowest Key	JavaScript TypeScript	Easy
1630	Arithmetic Subarrays	JavaScript	Medium
1631	Path With Minimum Effort		Medium
1632	Rank Transform of a Matrix		Hard
1633	Percentage of Users Attended a Contest		Easy
1634	Add Two Polynomials Represented as Linked Lists	JavaScript	Medium
1635	Hopper Company Queries I		Hard
1636	Sort Array by Increasing Frequency	JavaScript TypeScript	Easy
1637	Widest Vertical Area Between Two Points Containing No Points	JavaScript	Medium
1638	Count Substrings That Differ by One Character		Medium
1639	Number of Ways to Form a Target String Given a Dictionary		Hard
1640	Check Array Formation Through Concatenation	JavaScript TypeScript	Easy
1641	Count Sorted Vowel Strings	JavaScript TypeScript	Medium
1642	Furthest Building You Can Reach		Medium
1643	Kth Smallest Instructions		Hard
1644	Lowest Common Ancestor of a Binary Tree II	JavaScript	Medium
1645	Hopper Company Queries II		Hard
1646	Get Maximum in Generated Array	JavaScript TypeScript	Easy
1647	Minimum Deletions to Make Character Frequencies Unique	JavaScript TypeScript	Medium
1648	Sell Diminishing-Valued Colored Balls		Medium
1649	Create Sorted Array through Instructions		Hard
1650	Lowest Common Ancestor of a Binary Tree III	JavaScript TypeScript	Medium
1651	Hopper Company Queries III		Hard
1652	Defuse the Bomb	JavaScript TypeScript	Easy
1653	Minimum Deletions to Make String Balanced	JavaScript	Medium
1654	Minimum Jumps to Reach Home		Medium
1655	Distribute Repeating Integers		Hard
1656	Design an Ordered Stream	JavaScript TypeScript	Easy
1657	Determine if Two Strings Are Close	JavaScript TypeScript	Medium
1658	Minimum Operations to Reduce X to Zero	TypeScript	Medium
1659	Maximize Grid Happiness		Hard
1660	Correct a Binary Tree	JavaScript	Medium
1661	Average Time of Process per Machine		Easy
1662	Check If Two String Arrays are Equivalent	JavaScript TypeScript	Easy
1663	Smallest String With A Given Numeric Value	JavaScript TypeScript	Medium
1664	Ways to Make a Fair Array	JavaScript	Medium
1665	Minimum Initial Energy to Finish Tasks		Hard
1666	Change the Root of a Binary Tree		Medium
1667	Fix Names in a Table		Easy
1668	Maximum Repeating Substring	JavaScript TypeScript	Easy
1669	Merge In Between Linked Lists	JavaScript TypeScript	Medium
1670	Design Front Middle Back Queue	JavaScript TypeScript	Medium
1671	Minimum Number of Removals to Make Mountain Array		Hard
1672	Richest Customer Wealth	JavaScript TypeScript	Easy
1673	Find the Most Competitive Subsequence	JavaScript TypeScript	Medium
1674	Minimum Moves to Make Array Complementary		Medium
1675	Minimize Deviation in Array		Hard
1676	Lowest Common Ancestor of a Binary Tree IV	JavaScript	Medium
1677	Product's Worth Over Invoices		Easy
1678	Goal Parser Interpretation	JavaScript TypeScript	Easy
1679	Max Number of K-Sum Pairs	JavaScript TypeScript	Medium
1680	Concatenation of Consecutive Binary Numbers	JavaScript TypeScript	Medium
1681	Minimum Incompatibility		Hard
1682	Longest Palindromic Subsequence II		Medium
1683	Invalid Tweets		Easy
1684	Count the Number of Consistent Strings	JavaScript TypeScript	Easy
1685	Sum of Absolute Differences in a Sorted Array	JavaScript TypeScript	Medium
1686	Stone Game VI		Medium
1687	Delivering Boxes from Storage to Ports		Hard
1688	Count of Matches in Tournament	JavaScript TypeScript	Easy
1689	Partitioning Into Minimum Number Of Deci-Binary Numbers	JavaScript TypeScript	Medium
1690	Stone Game VII		Medium
1691	Maximum Height by Stacking Cuboids		Hard
1692	Count Ways to Distribute Candies		Hard
1693	Daily Leads and Partners		Easy
1694	Reformat Phone Number	JavaScript TypeScript	Easy
1695	Maximum Erasure Value	JavaScript	Medium
1696	Jump Game VI	JavaScript	Medium
1697	Checking Existence of Edge Length Limited Paths		Hard
1698	Number of Distinct Substrings in a String		Medium
1699	Number of Calls Between Two Persons		Medium
1700	Number of Students Unable to Eat Lunch	JavaScript TypeScript	Easy
1701	Average Waiting Time	JavaScript TypeScript	Medium
1702	Maximum Binary String After Change	JavaScript TypeScript	Medium
1703	Minimum Adjacent Swaps for K Consecutive Ones		Hard
1704	Determine if String Halves Are Alike	JavaScript TypeScript	Easy
1705	Maximum Number of Eaten Apples	JavaScript TypeScript	Medium
1706	Where Will the Ball Fall		Medium
1707	Maximum XOR With an Element From Array		Hard
1708	Largest Subarray Length K	JavaScript TypeScript	Easy
1709	Biggest Window Between Visits		Medium
1710	Maximum Units on a Truck	JavaScript TypeScript	Easy
1711	Count Good Meals	JavaScript TypeScript	Medium
1712	Ways to Split Array Into Three Subarrays	JavaScript TypeScript	Medium
1713	Minimum Operations to Make a Subsequence		Hard
1714	Sum Of Special Evenly-Spaced Elements In Array		Hard
1715	Count Apples and Oranges		Medium
1716	Calculate Money in Leetcode Bank	JavaScript TypeScript	Easy
1717	Maximum Score From Removing Substrings		Medium
1718	Construct the Lexicographically Largest Valid Sequence		Medium
1719	Number Of Ways To Reconstruct A Tree		Hard
1720	Decode XORed Array	JavaScript TypeScript	Easy
1721	Swapping Nodes in a Linked List	JavaScript TypeScript	Medium
1722	Minimize Hamming Distance After Swap Operations	JavaScript TypeScript	Medium
1723	Find Minimum Time to Finish All Jobs		Hard
1724	Checking Existence of Edge Length Limited Paths II		Hard
1725	Number Of Rectangles That Can Form The Largest Square	JavaScript TypeScript	Easy
1726	Tuple with Same Product	JavaScript TypeScript	Medium
1727	Largest Submatrix With Rearrangements		Medium
1728	Cat and Mouse II		Hard
1729	Find Followers Count		Easy
1730	Shortest Path to Get Food		Medium
1731	The Number of Employees Which Report to Each Employee		Easy
1732	Find the Highest Altitude	JavaScript TypeScript	Easy
1733	Minimum Number of People to Teach	JavaScript TypeScript	Medium
1734	Decode XORed Permutation	JavaScript TypeScript	Medium
1735	Count Ways to Make Array With Product		Hard
1736	Latest Time by Replacing Hidden Digits	JavaScript TypeScript	Easy
1737	Change Minimum Characters to Satisfy One of Three Conditions	JavaScript TypeScript	Medium
1738	Find Kth Largest XOR Coordinate Value	JavaScript TypeScript	Medium
1739	Building Boxes		Hard
1740	Find Distance in a Binary Tree	JavaScript TypeScript	Medium
1741	Find Total Time Spent by Each Employee		Easy
1742	Maximum Number of Balls in a Box	JavaScript TypeScript	Easy
1743	Restore the Array From Adjacent Pairs	JavaScript TypeScript	Medium
1744	Can You Eat Your Favorite Candy on Your Favorite Day?	JavaScript TypeScript	Medium
1745	Palindrome Partitioning IV	JavaScript TypeScript	Hard
1746	Maximum Subarray Sum After One Operation		Medium
1747	Leetflex Banned Accounts		Medium
1748	Sum of Unique Elements	JavaScript TypeScript	Easy
1749	Maximum Absolute Sum of Any Subarray	JavaScript TypeScript	Medium
1750	Minimum Length of String After Deleting Similar Ends	JavaScript TypeScript	Medium
1751	Maximum Number of Events That Can Be Attended II		Hard
1752	Check if Array Is Sorted and Rotated	JavaScript TypeScript	Easy
1753	Maximum Score From Removing Stones	JavaScript TypeScript	Medium
1754	Largest Merge Of Two Strings	JavaScript TypeScript	Medium
1755	Closest Subsequence Sum		Hard
1756	Design Most Recently Used Queue	JavaScript	Medium
1757	Recyclable and Low Fat Products		Easy
1758	Minimum Changes To Make Alternating Binary String	JavaScript TypeScript	Easy
1759	Count Number of Homogenous Substrings	JavaScript TypeScript	Medium
1760	Minimum Limit of Balls in a Bag	JavaScript TypeScript	Medium
1761	Minimum Degree of a Connected Trio in a Graph		Hard
1762	Buildings With an Ocean View	JavaScript TypeScript	Medium
1763	Longest Nice Substring	JavaScript TypeScript	Easy
1764	Form Array by Concatenating Subarrays of Another Array	JavaScript TypeScript	Medium
1765	Map of Highest Peak		Medium
1766	Tree of Coprimes		Hard
1767	Find the Subtasks That Did Not Execute		Hard
1768	Merge Strings Alternately	JavaScript TypeScript	Easy
1769	Minimum Number of Operations to Move All Balls to Each Box	JavaScript TypeScript	Medium
1770	Maximum Score from Performing Multiplication Operations		Hard
1771	Maximize Palindrome Length From Subsequences		Hard
1772	Sort Features by Popularity	JavaScript	Medium
1773	Count Items Matching a Rule	JavaScript TypeScript	Easy
1774	Closest Dessert Cost	JavaScript TypeScript	Medium
1775	Equal Sum Arrays With Minimum Number of Operations		Medium
1776	Car Fleet II		Hard
1777	Product's Price for Each Store		Easy
1778	Shortest Path in a Hidden Grid		Medium
1779	Find Nearest Point That Has the Same X or Y Coordinate	JavaScript TypeScript	Easy
1780	Check if Number is a Sum of Powers of Three	JavaScript TypeScript	Medium
1781	Sum of Beauty of All Substrings	JavaScript TypeScript	Medium
1782	Count Pairs Of Nodes		Hard
1783	Grand Slam Titles		Medium
1784	Check if Binary String Has at Most One Segment of Ones	JavaScript TypeScript	Easy
1785	Minimum Elements to Add to Form a Given Sum	JavaScript TypeScript	Medium
1786	Number of Restricted Paths From First to Last Node		Medium
1787	Make the XOR of All Segments Equal to Zero		Hard
1788	Maximize the Beauty of the Garden		Hard
1789	Primary Department for Each Employee		Easy
1790	Check if One String Swap Can Make Strings Equal	JavaScript TypeScript	Easy
1791	Find Center of Star Graph	JavaScript TypeScript	Easy
1792	Maximum Average Pass Ratio		Medium
1793	Maximum Score of a Good Subarray		Hard
1794	Count Pairs of Equal Substrings With Minimum Difference		Medium
1795	Rearrange Products Table		Easy
1796	Second Largest Digit in a String	JavaScript TypeScript	Easy
1797	Design Authentication Manager	JavaScript TypeScript	Medium
1798	Maximum Number of Consecutive Values You Can Make	JavaScript TypeScript	Medium
1799	Maximize Score After N Operations		Hard
1800	Maximum Ascending Subarray Sum	JavaScript TypeScript	Easy
1801	Number of Orders in the Backlog	JavaScript TypeScript	Medium
1802	Maximum Value at a Given Index in a Bounded Array	JavaScript TypeScript	Medium
1803	Count Pairs With XOR in a Range	JavaScript TypeScript	Hard
1804	Implement Trie II (Prefix Tree)		Medium
1805	Number of Different Integers in a String	JavaScript TypeScript	Easy
1806	Minimum Number of Operations to Reinitialize a Permutation	JavaScript TypeScript	Medium
1807	Evaluate the Bracket Pairs of a String	JavaScript TypeScript	Medium
1808	Maximize Number of Nice Divisors		Hard
1809	Ad-Free Sessions		Easy
1810	Minimum Path Cost in a Hidden Grid		Medium
1811	Find Interview Candidates		Medium
1812	Determine Color of a Chessboard Square	JavaScript TypeScript	Easy
1813	Sentence Similarity III	JavaScript	Medium
1814	Count Nice Pairs in an Array	JavaScript TypeScript	Medium
1815	Maximum Number of Groups Getting Fresh Donuts		Hard
1816	Truncate Sentence	JavaScript TypeScript	Easy
1817	Finding the Users Active Minutes	JavaScript TypeScript	Medium
1818	Minimum Absolute Sum Difference	JavaScript	Medium
1819	Number of Different Subsequences GCDs		Hard
1820	Maximum Number of Accepted Invitations		Medium
1821	Find Customers With Positive Revenue this Year		Easy
1822	Sign of the Product of an Array	JavaScript TypeScript	Easy
1823	Find the Winner of the Circular Game		Medium
1824	Minimum Sideway Jumps	JavaScript TypeScript	Medium
1825	Finding MK Average		Hard
1826	Faulty Sensor		Easy
1827	Minimum Operations to Make the Array Increasing	JavaScript TypeScript	Easy
1828	Queries on Number of Points Inside a Circle	JavaScript TypeScript	Medium
1829	Maximum XOR for Each Query	JavaScript TypeScript	Medium
1830	Minimum Number of Operations to Make String Sorted		Hard
1831	Maximum Transaction Each Day		Medium
1832	Check if the Sentence Is Pangram	JavaScript TypeScript	Easy
1833	Maximum Ice Cream Bars	JavaScript TypeScript	Medium
1834	Single-Threaded CPU	JavaScript TypeScript	Medium
1835	Find XOR Sum of All Pairs Bitwise AND	JavaScript TypeScript	Hard
1836	Remove Duplicates From an Unsorted Linked List		Medium
1837	Sum of Digits in Base K	JavaScript TypeScript	Easy
1838	Frequency of the Most Frequent Element	JavaScript	Medium
1839	Longest Substring Of All Vowels in Order	JavaScript	Medium
1840	Maximum Building Height		Hard
1841	League Statistics		Medium
1842	Next Palindrome Using Same Digits		Hard
1843	Suspicious Bank Accounts		Medium
1844	Replace All Digits with Characters	JavaScript TypeScript	Easy
1845	Seat Reservation Manager	JavaScript	Medium
1846	Maximum Element After Decreasing and Rearranging	JavaScript	Medium
1847	Closest Room		Hard
1848	Minimum Distance to the Target Element	JavaScript TypeScript	Easy
1849	Splitting a String Into Descending Consecutive Values	JavaScript	Medium
1850	Minimum Adjacent Swaps to Reach the Kth Smallest Number		Medium
1851	Minimum Interval to Include Each Query		Hard
1852	Distinct Numbers in Each Subarray		Medium
1853	Convert Date Format		Easy
1854	Maximum Population Year	JavaScript TypeScript	Easy
1855	Maximum Distance Between a Pair of Values	JavaScript TypeScript	Medium
1856	Maximum Subarray Min-Product		Medium
1857	Largest Color Value in a Directed Graph		Hard
1858	Longest Word With All Prefixes		Medium
1859	Sorting the Sentence	JavaScript TypeScript	Easy
1860	Incremental Memory Leak	JavaScript TypeScript	Medium
1861	Rotating the Box		Medium
1862	Sum of Floored Pairs		Hard
1863	Sum of All Subset XOR Totals	JavaScript TypeScript	Easy
1864	Minimum Number of Swaps to Make the Binary String Alternating		Medium
1865	Finding Pairs With a Certain Sum	JavaScript TypeScript	Medium
1866	Number of Ways to Rearrange Sticks With K Sticks Visible		Hard
1867	Orders With Maximum Quantity Above Average		Medium
1868	Product of Two Run-Length Encoded Arrays		Medium
1869	Longer Contiguous Segments of Ones than Zeros	JavaScript TypeScript	Easy
1870	Minimum Speed to Arrive on Time	JavaScript TypeScript	Medium
1871	Jump Game VII	TypeScript	Medium
1872	Stone Game VIII		Hard
1873	Calculate Special Bonus		Easy
1874	Minimize Product Sum of Two Arrays		Medium
1875	Group Employees of the Same Salary		Medium
1876	Substrings of Size Three with Distinct Characters	JavaScript TypeScript	Easy
1877	Minimize Maximum Pair Sum in Array		Medium
1878	Get Biggest Three Rhombus Sums in a Grid		Medium
1879	Minimum XOR Sum of Two Arrays		Hard
1880	Check if Word Equals Summation of Two Words	JavaScript TypeScript	Easy
1881	Maximum Value after Insertion	TypeScript	Medium
1882	Process Tasks Using Servers		Medium
1883	Minimum Skips to Arrive at Meeting On Time		Hard
1884	Egg Drop With 2 Eggs and N Floors		Medium
1885	Count Pairs in Two Arrays		Medium
1886	Determine Whether Matrix Can Be Obtained By Rotation	TypeScript	Easy
1887	Reduction Operations to Make the Array Elements Equal	JavaScript TypeScript	Medium
1888	Minimum Number of Flips to Make the Binary String Alternating		Medium
1889	Minimum Space Wasted From Packaging		Hard
1890	The Latest Login in 2020		Easy
1891	Cutting Ribbons		Medium
1892	Page Recommendations II		Hard
1893	Check if All the Integers in a Range Are Covered	JavaScript TypeScript	Easy
1894	Find the Student that Will Replace the Chalk	TypeScript	Medium
1895	Largest Magic Square		Medium
1896	Minimum Cost to Change the Final Value of Expression		Hard
1897	Redistribute Characters to Make All Strings Equal	JavaScript TypeScript	Easy
1898	Maximum Number of Removable Characters		Medium
1899	Merge Triplets to Form Target Triplet		Medium
1900	The Earliest and Latest Rounds Where Players Compete		Hard
1901	Find a Peak Element II		Medium
1902	Depth of BST Given Insertion Order		Medium
1903	Largest Odd Number in String	JavaScript TypeScript	Easy
1904	The Number of Full Rounds You Have Played	JavaScript TypeScript	Medium
1905	Count Sub Islands	JavaScript TypeScript	Medium
1906	Minimum Absolute Difference Queries	JavaScript TypeScript	Medium
1907	Count Salary Categories		Medium
1908	Game of Nim		Medium
1909	Remove One Element to Make the Array Strictly Increasing	TypeScript	Easy
1910	Remove All Occurrences of a Substring	TypeScript	Medium
1911	Maximum Alternating Subsequence Sum		Medium
1912	Design Movie Rental System		Hard
1913	Maximum Product Difference Between Two Pairs	JavaScript TypeScript	Easy
1914	Cyclically Rotating a Grid		Medium
1915	Number of Wonderful Substrings		Medium
1916	Count Ways to Build Rooms in an Ant Colony		Hard
1917	Leetcodify Friends Recommendations		Hard
1918	Kth Smallest Subarray Sum		Medium
1919	Leetcodify Similar Friends		Hard
1920	Build Array from Permutation	JavaScript TypeScript	Easy
1921	Eliminate Maximum Number of Monsters		Medium
1922	Count Good Numbers		Medium
1923	Longest Common Subpath		Hard
1924	Erect the Fence II		Hard
1925	Count Square Sum Triples	JavaScript TypeScript	Easy
1926	Nearest Exit from Entrance in Maze	JavaScript TypeScript	Medium
1927	Sum Game		Medium
1928	Minimum Cost to Reach Destination in Time		Hard
1929	Concatenation of Array	JavaScript TypeScript	Easy
1930	Unique Length-3 Palindromic Subsequences	JavaScript TypeScript	Medium
1931	Painting a Grid With Three Different Colors		Hard
1932	Merge BSTs to Create Single BST		Hard
1933	Check if String Is Decomposable Into Value-Equal Substrings		Easy
1934	Confirmation Rate		Medium
1935	Maximum Number of Words You Can Type	JavaScript TypeScript	Easy
1936	Add Minimum Number of Rungs	JavaScript TypeScript	Medium
1937	Maximum Number of Points with Cost	JavaScript TypeScript	Medium
1938	Maximum Genetic Difference Query		Hard
1939	Users That Actively Request Confirmation Messages		Easy
1940	Longest Common Subsequence Between Sorted Arrays		Medium
1941	Check if All Characters Have Equal Number of Occurrences	JavaScript TypeScript	Easy
1942	The Number of the Smallest Unoccupied Chair		Medium
1943	Describe the Painting		Medium
1944	Number of Visible People in a Queue		Hard
1945	Sum of Digits of String After Convert	JavaScript TypeScript	Easy
1946	Largest Number After Mutating Substring	JavaScript TypeScript	Medium
1947	Maximum Compatibility Score Sum	JavaScript TypeScript	Medium
1948	Delete Duplicate Folders in System		Hard
1949	Strong Friendship		Medium
1950	Maximum of Minimum Values in All Subarrays		Medium
1951	All the Pairs With the Maximum Number of Common Followers		Medium
1952	Three Divisors	JavaScript TypeScript	Easy
1953	Maximum Number of Weeks for Which You Can Work	JavaScript TypeScript	Medium
1954	Minimum Garden Perimeter to Collect Enough Apples	JavaScript TypeScript	Medium
1955	Count Number of Special Subsequences		Hard
1956	Minimum Time For K Virus Variants to Spread		Hard
1957	Delete Characters to Make Fancy String	JavaScript TypeScript	Easy
1958	Check if Move is Legal		Medium
1959	Minimum Total Space Wasted With K Resizing Operations		Medium
1960	Maximum Product of the Length of Two Palindromic Substrings		Hard
1961	Check If String Is a Prefix of Array	JavaScript TypeScript	Easy
1962	Remove Stones to Minimize the Total	JavaScript TypeScript	Medium
1963	Minimum Number of Swaps to Make the String Balanced		Medium
1964	Find the Longest Valid Obstacle Course at Each Position		Hard
1965	Employees With Missing Information		Easy
1966	Binary Searchable Numbers in an Unsorted Array		Medium
1967	Number of Strings That Appear as Substrings in Word	JavaScript TypeScript	Easy
1968	Array With Elements Not Equal to Average of Neighbors	JavaScript	Medium
1969	Minimum Non-Zero Product of the Array Elements		Medium
1970	Last Day Where You Can Still Cross		Hard
1971	Find if Path Exists in Graph	JavaScript TypeScript	Easy
1972	First and Last Call On the Same Day		Hard
1973	Count Nodes Equal to Sum of Descendants		Medium
1974	Minimum Time to Type Word Using Special Typewriter	JavaScript TypeScript	Easy
1975	Maximum Matrix Sum		Medium
1976	Number of Ways to Arrive at Destination		Medium
1977	Number of Ways to Separate Numbers		Hard
1978	Employees Whose Manager Left the Company		Easy
1979	Find Greatest Common Divisor of Array	JavaScript TypeScript	Easy
1980	Find Unique Binary String	JavaScript TypeScript	Medium
1981	Minimize the Difference Between Target and Chosen Elements		Medium
1982	Find Array Given Subset Sums		Hard
1983	Widest Pair of Indices With Equal Range Sum		Medium
1984	Minimum Difference Between Highest and Lowest of K Scores	JavaScript TypeScript	Easy
1985	Find the Kth Largest Integer in the Array		Medium
1986	Minimum Number of Work Sessions to Finish the Tasks		Medium
1987	Number of Unique Good Subsequences		Hard
1988	Find Cutoff Score for Each School		Medium
1989	Maximum Number of People That Can Be Caught in Tag		Medium
1990	Count the Number of Experiments		Medium
1991	Find the Middle Index in Array	JavaScript TypeScript	Easy
1992	Find All Groups of Farmland	TypeScript	Medium
1993	Operations on Tree		Medium
1994	The Number of Good Subsets		Hard
1995	Count Special Quadruplets	JavaScript TypeScript	Easy
1996	The Number of Weak Characters in the Game	TypeScript	Medium
1997	First Day Where You Have Been in All the Rooms		Medium
1998	GCD Sort of an Array		Hard
1999	Smallest Greater Multiple Made of Two Digits		Medium
2000	Reverse Prefix of Word	JavaScript TypeScript	Easy
2001	Number of Pairs of Interchangeable Rectangles	JavaScript TypeScript	Medium
2002	Maximum Product of the Length of Two Palindromic Subsequences		Medium
2003	Smallest Missing Genetic Value in Each Subtree		Hard
2004	The Number of Seniors and Juniors to Join the Company		Hard
2005	Subtree Removal Game with Fibonacci Tree		Hard
2006	Count Number of Pairs With Absolute Difference K	JavaScript TypeScript	Easy
2007	Find Original Array From Doubled Array	JavaScript TypeScript	Medium
2008	Maximum Earnings From Taxi	TypeScript	Medium
2009	Minimum Number of Operations to Make Array Continuous		Hard
2010	The Number of Seniors and Juniors to Join the Company II		Hard
2011	Final Value of Variable After Performing Operations	JavaScript TypeScript	Easy
2012	Sum of Beauty in the Array	TypeScript	Medium
2013	Detect Squares		Medium
2014	Longest Subsequence Repeated k Times		Hard
2015	Average Height of Buildings in Each Segment		Medium
2016	Maximum Difference Between Increasing Elements	JavaScript TypeScript	Easy
2017	Grid Game	TypeScript	Medium
2018	Check if Word Can Be Placed In Crossword		Medium
2019	The Score of Students Solving Math Expression		Hard
2020	Number of Accounts That Did Not Stream		Medium
2021	Brightest Position on Street		Medium
2022	Convert 1D Array Into 2D Array	JavaScript TypeScript	Easy
2023	Number of Pairs of Strings With Concatenation Equal to Target	JavaScript	Medium
2024	Maximize the Confusion of an Exam		Medium
2025	Maximum Number of Ways to Partition an Array		Hard
2026	Low-Quality Problems		Easy
2027	Minimum Moves to Convert String	JavaScript TypeScript	Easy
2028	Find Missing Observations	TypeScript	Medium
2029	Stone Game IX		Medium
2030	Smallest K-Length Subsequence With Occurrences of a Letter		Hard
2031	Count Subarrays With More Ones Than Zeros		Medium
2032	Two Out of Three	JavaScript TypeScript	Easy
2033	Minimum Operations to Make a Uni-Value Grid		Medium
2034	Stock Price Fluctuation		Medium
2035	Partition Array Into Two Arrays to Minimize Sum Difference		Hard
2036	Maximum Alternating Subarray Sum		Medium
2037	Minimum Number of Moves to Seat Everyone	JavaScript TypeScript	Easy
2038	Remove Colored Pieces if Both Neighbors are the Same Color	JavaScript TypeScript	Medium
2039	The Time When the Network Becomes Idle		Medium
2040	Kth Smallest Product of Two Sorted Arrays		Hard
2041	Accepted Candidates From the Interviews		Medium
2042	Check if Numbers Are Ascending in a Sentence	JavaScript TypeScript	Easy
2043	Simple Bank System	JavaScript	Medium
2044	Count Number of Maximum Bitwise-OR Subsets		Medium
2045	Second Minimum Time to Reach Destination		Hard
2046	Sort Linked List Already Sorted Using Absolute Values		Medium
2047	Number of Valid Words in a Sentence	JavaScript TypeScript	Easy
2048	Next Greater Numerically Balanced Number	TypeScript	Medium
2049	Count Nodes With the Highest Score		Medium
2050	Parallel Courses III		Hard
2051	The Category of Each Member in the Store		Medium
2052	Minimum Cost to Separate Sentence Into Rows		Medium
2053	Kth Distinct String in an Array	JavaScript TypeScript	Easy
2054	Two Best Non-Overlapping Events		Medium
2055	Plates Between Candles		Medium
2056	Number of Valid Move Combinations On Chessboard		Hard
2057	Smallest Index With Equal Value	JavaScript TypeScript	Easy
2058	Find the Minimum and Maximum Number of Nodes Between Critical Points	TypeScript	Medium
2059	Minimum Operations to Convert Number		Medium
2060	Check if an Original String Exists Given Two Encoded Strings		Hard
2061	Number of Spaces Cleaning Robot Cleaned		Medium
2062	Count Vowel Substrings of a String	JavaScript TypeScript	Easy
2063	Vowels of All Substrings	JavaScript TypeScript	Medium
2064	Minimized Maximum of Products Distributed to Any Store		Medium
2065	Maximum Path Quality of a Graph		Hard
2066	Account Balance		Medium
2067	Number of Equal Count Substrings		Medium
2068	Check Whether Two Strings are Almost Equivalent	JavaScript TypeScript	Easy
2069	Walking Robot Simulation II		Medium
2070	Most Beautiful Item for Each Query		Medium
2071	Maximum Number of Tasks You Can Assign		Hard
2072	The Winner University		Easy
2073	Time Needed to Buy Tickets	JavaScript TypeScript	Easy
2074	Reverse Nodes in Even Length Groups	TypeScript	Medium
2075	Decode the Slanted Ciphertext		Medium
2076	Process Restricted Friend Requests		Hard
2077	Paths in Maze That Lead to Same Room		Medium
2078	Two Furthest Houses With Different Colors	JavaScript TypeScript	Easy
2079	Watering Plants	JavaScript TypeScript	Medium
2080	Range Frequency Queries		Medium
2081	Sum of k-Mirror Numbers		Hard
2082	The Number of Rich Customers		Easy
2083	Substrings That Begin and End With the Same Letter		Medium
2084	Drop Type 1 Orders for Customers With Type 0 Orders		Medium
2085	Count Common Words With One Occurrence	JavaScript TypeScript	Easy
2086	Minimum Number of Food Buckets to Feed the Hamsters	JavaScript TypeScript	Medium
2087	Minimum Cost Homecoming of a Robot in a Grid		Medium
2088	Count Fertile Pyramids in a Land		Hard
2089	Find Target Indices After Sorting Array	JavaScript TypeScript	Easy
2090	K Radius Subarray Averages	JavaScript TypeScript	Medium
2091	Removing Minimum and Maximum From Array	JavaScript TypeScript	Medium
2092	Find All People With Secret		Hard
2093	Minimum Cost to Reach City With Discounts		Medium
2094	Finding 3-Digit Even Numbers	JavaScript TypeScript	Easy
2095	Delete the Middle Node of a Linked List	JavaScript TypeScript	Medium
2096	Step-By-Step Directions From a Binary Tree Node to Another	JavaScript TypeScript	Medium
2097	Valid Arrangement of Pairs		Hard
2098	Subsequence of Size K With the Largest Even Sum		Medium
2099	Find Subsequence of Length K With the Largest Sum	JavaScript TypeScript	Easy
2100	Find Good Days to Rob the Bank	TypeScript	Medium
2101	Detonate the Maximum Bombs		Medium
2102	Sequentially Ordinal Rank Tracker		Hard
2103	Rings and Rods	JavaScript TypeScript	Easy
2104	Sum of Subarray Ranges		Medium
2105	Watering Plants II		Medium
2106	Maximum Fruits Harvested After at Most K Steps	TypeScript	Hard
2107	Number of Unique Flavors After Sharing K Candies		Medium
2108	Find First Palindromic String in the Array	JavaScript TypeScript	Easy
2109	Adding Spaces to a String	JavaScript TypeScript	Medium
2110	Number of Smooth Descent Periods of a Stock	JavaScript TypeScript	Medium
2111	Minimum Operations to Make the Array K-Increasing		Hard
2112	The Airport With the Most Traffic		Medium
2113	Elements in Array After Removing and Replacing Elements		Medium
2114	Maximum Number of Words Found in Sentences	JavaScript TypeScript	Easy
2115	Find All Possible Recipes from Given Supplies		Medium
2116	Check if a Parentheses String Can Be Valid		Medium
2117	Abbreviating the Product of a Range		Hard
2118	Build the Equation		Hard
2119	A Number After a Double Reversal	JavaScript TypeScript	Easy
2120	Execution of All Suffix Instructions Staying in a Grid	TypeScript	Medium
2121	Intervals Between Identical Elements	TypeScript	Medium
2122	Recover the Original Array		Hard
2123	Minimum Operations to Remove Adjacent Ones in Matrix		Hard
2124	Check if All A's Appears Before All B's	JavaScript TypeScript	Easy
2125	Number of Laser Beams in a Bank	JavaScript TypeScript	Medium
2126	Destroying Asteroids	JavaScript TypeScript	Medium
2127	Maximum Employees to Be Invited to a Meeting		Hard
2128	Remove All Ones With Row and Column Flips		Medium
2129	Capitalize the Title	JavaScript TypeScript	Easy
2130	Maximum Twin Sum of a Linked List	JavaScript TypeScript	Medium
2131	Longest Palindrome by Concatenating Two Letter Words		Medium
2132	Stamping the Grid		Hard
2133	Check if Every Row and Column Contains All Numbers	JavaScript TypeScript	Easy
2134	Minimum Swaps to Group All 1's Together II		Medium
2135	Count Words Obtained After Adding a Letter		Medium
2136	Earliest Possible Day of Full Bloom		Hard
2137	Pour Water Between Buckets to Make Water Levels Equal		Medium
2138	Divide a String Into Groups of Size k	JavaScript TypeScript	Easy
2139	Minimum Moves to Reach Target Score	JavaScript TypeScript	Medium
2140	Solving Questions With Brainpower	TypeScript	Medium
2141	Maximum Running Time of N Computers		Hard
2142	The Number of Passengers in Each Bus I		Medium
2143	Choose Numbers From Two Arrays in Range		Hard
2144	Minimum Cost of Buying Candies With Discount	JavaScript TypeScript	Easy
2145	Count the Hidden Sequences		Medium
2146	K Highest Ranked Items Within a Price Range		Medium
2147	Number of Ways to Divide a Long Corridor		Hard
2148	Count Elements With Strictly Smaller and Greater Elements	JavaScript TypeScript	Easy
2149	Rearrange Array Elements by Sign	JavaScript TypeScript	Medium
2150	Find All Lonely Numbers in the Array	JavaScript TypeScript	Medium
2151	Maximum Good People Based on Statements		Hard
2152	Minimum Number of Lines to Cover Points		Medium
2153	The Number of Passengers in Each Bus II		Hard
2154	Keep Multiplying Found Values by Two	JavaScript TypeScript	Easy
2155	All Divisions With the Highest Score of a Binary Array	JavaScript TypeScript	Medium
2156	Find Substring With Given Hash Value		Hard
2157	Groups of Strings		Hard
2158	Amount of New Area Painted Each Day		Hard
2159	Order Two Columns Independently		Medium
2160	Minimum Sum of Four Digit Number After Splitting Digits	JavaScript TypeScript	Easy
2161	Partition Array According to Given Pivot	JavaScript TypeScript	Medium
2162	Minimum Cost to Set Cooking Time		Medium
2163	Minimum Difference in Sums After Removal of Elements		Hard
2164	Sort Even and Odd Indices Independently	JavaScript TypeScript	Easy
2165	Smallest Value of the Rearranged Number	JavaScript TypeScript	Medium
2166	Design Bitset		Medium
2167	Minimum Time to Remove All Cars Containing Illegal Goods		Hard
2168	Unique Substrings With Equal Digit Frequency		Medium
2169	Count Operations to Obtain Zero	JavaScript TypeScript	Easy
2170	Minimum Operations to Make the Array Alternating		Medium
2171	Removing Minimum Number of Magic Beans		Medium
2172	Maximum AND Sum of Array		Hard
2173	Longest Winning Streak		Hard
2174	Remove All Ones With Row and Column Flips II		Medium
2175	The Change in Global Rankings		Medium
2176	Count Equal and Divisible Pairs in an Array	JavaScript TypeScript	Easy
2177	Find Three Consecutive Integers That Sum to a Given Number	JavaScript TypeScript	Medium
2178	Maximum Split of Positive Even Integers		Medium
2179	Count Good Triplets in an Array		Hard
2180	Count Integers With Even Digit Sum	JavaScript TypeScript	Easy
2181	Merge Nodes in Between Zeros	JavaScript TypeScript	Medium
2182	Construct String With Repeat Limit		Medium
2183	Count Array Pairs Divisible by K		Hard
2184	Number of Ways to Build Sturdy Brick Wall		Medium
2185	Counting Words With a Given Prefix	JavaScript TypeScript	Easy
2186	Minimum Number of Steps to Make Two Strings Anagram II	JavaScript TypeScript	Medium
2187	Minimum Time to Complete Trips	TypeScript	Medium
2188	Minimum Time to Finish the Race		Hard
2189	Number of Ways to Build House of Cards		Medium
2190	Most Frequent Number Following Key In an Array	JavaScript TypeScript	Easy
2191	Sort the Jumbled Numbers	JavaScript TypeScript	Medium
2192	All Ancestors of a Node in a Directed Acyclic Graph	JavaScript TypeScript	Medium
2193	Minimum Number of Moves to Make Palindrome		Hard
2194	Cells in a Range on an Excel Sheet	JavaScript TypeScript	Easy
2195	Append K Integers With Minimal Sum		Medium
2196	Create Binary Tree From Descriptions	JavaScript TypeScript	Medium
2197	Replace Non-Coprime Numbers in Array		Hard
2198	Number of Single Divisor Triplets		Medium
2199	Finding the Topic of Each Post		Hard
2200	Find All K-Distant Indices in an Array	JavaScript TypeScript	Easy
2201	Count Artifacts That Can Be Extracted	TypeScript	Medium
2202	Maximize the Topmost Element After K Moves		Medium
2203	Minimum Weighted Subgraph With the Required Paths		Hard
2204	Distance to a Cycle in Undirected Graph		Hard
2205	The Number of Users That Are Eligible for Discount		Easy
2206	Divide Array Into Equal Pairs	JavaScript TypeScript	Easy
2207	Maximize Number of Subsequences in a String	TypeScript	Medium
2208	Minimum Operations to Halve Array Sum	TypeScript	Medium
2209	Minimum White Tiles After Covering With Carpets		Hard
2210	Count Hills and Valleys in an Array	JavaScript TypeScript	Easy
2211	Count Collisions on a Road	TypeScript	Medium
2212	Maximum Points in an Archery Competition		Medium
2213	Longest Substring of One Repeating Character		Hard
2214	Minimum Health to Beat Game		Medium
2215	Find the Difference of Two Arrays	JavaScript TypeScript	Easy
2216	Minimum Deletions to Make Array Beautiful	TypeScript	Medium
2217	Find Palindrome With Fixed Length		Medium
2218	Maximum Value of K Coins From Piles		Hard
2219	Maximum Sum Score of Array		Medium
2220	Minimum Bit Flips to Convert Number	JavaScript TypeScript	Easy
2221	Find Triangular Sum of an Array	JavaScript TypeScript	Medium
2222	Number of Ways to Select Buildings		Medium
2223	Sum of Scores of Built Strings		Hard
2224	Minimum Number of Operations to Convert Time	JavaScript TypeScript	Easy
2225	Find Players With Zero or One Losses	JavaScript TypeScript	Medium
2226	Maximum Candies Allocated to K Children		Medium
2227	Encrypt and Decrypt Strings		Hard
2228	Users With Two Purchases Within Seven Days		Medium
2229	Check if an Array Is Consecutive		Easy
2230	The Users That Are Eligible for Discount		Easy
2231	Largest Number After Digit Swaps by Parity	JavaScript TypeScript	Easy
2232	Minimize Result by Adding Parentheses to Expression	TypeScript	Medium
2233	Maximum Product After K Increments		Medium
2234	Maximum Total Beauty of the Gardens		Hard
2235	Add Two Integers	JavaScript TypeScript	Easy
2236	Root Equals Sum of Children	JavaScript TypeScript	Easy
2237	Count Positions on Street With Required Brightness		Medium
2238	Number of Times a Driver Was a Passenger		Medium
2239	Find Closest Number to Zero	JavaScript TypeScript	Easy
2240	Number of Ways to Buy Pens and Pencils	TypeScript	Medium
2241	Design an ATM Machine	TypeScript	Medium
2242	Maximum Score of a Node Sequence		Hard
2243	Calculate Digit Sum of a String	JavaScript TypeScript	Easy
2244	Minimum Rounds to Complete All Tasks	TypeScript	Medium
2245	Maximum Trailing Zeros in a Cornered Path		Medium
2246	Longest Path With Different Adjacent Characters		Hard
2247	Maximum Cost of Trip With K Highways		Hard
2248	Intersection of Multiple Arrays	JavaScript TypeScript	Easy
2249	Count Lattice Points Inside a Circle		Medium
2250	Count Number of Rectangles Containing Each Point		Medium
2251	Number of Flowers in Full Bloom		Hard
2252	Dynamic Pivoting of a Table		Hard
2253	Dynamic Unpivoting of a Table		Hard
2254	Design Video Sharing Platform		Hard
2255	Count Prefixes of a Given String	JavaScript TypeScript	Easy
2256	Minimum Average Difference	TypeScript	Medium
2257	Count Unguarded Cells in the Grid		Medium
2258	Escape the Spreading Fire		Hard
2259	Remove Digit From Number to Maximize Result	JavaScript TypeScript	Easy
2260	Minimum Consecutive Cards to Pick Up	TypeScript	Medium
2261	K Divisible Elements Subarrays		Medium
2262	Total Appeal of A String		Hard
2263	Make Array Non-decreasing or Non-increasing		Hard
2264	Largest 3-Same-Digit Number in String	JavaScript TypeScript	Easy
2265	Count Nodes Equal to Average of Subtree	TypeScript	Medium
2266	Count Number of Texts	TypeScript	Medium
2267	Check if There Is a Valid Parentheses String Path		Hard
2268	Minimum Number of Keypresses		Medium
2269	Find the K-Beauty of a Number	JavaScript TypeScript	Easy
2270	Number of Ways to Split Array	TypeScript	Medium
2271	Maximum White Tiles Covered by a Carpet		Medium
2272	Substring With Largest Variance		Hard
2273	Find Resultant Array After Removing Anagrams	JavaScript TypeScript	Easy
2274	Maximum Consecutive Floors Without Special Floors		Medium
2275	Largest Combination With Bitwise AND Greater Than Zero	TypeScript	Medium
2276	Count Integers in Intervals	TypeScript	Hard
2277	Closest Node to Path in Tree		Hard
2278	Percentage of Letter in String	JavaScript TypeScript	Easy
2279	Maximum Bags With Full Capacity of Rocks	TypeScript	Medium
2280	Minimum Lines to Represent a Line Chart		Medium
2281	Sum of Total Strength of Wizards		Hard
2282	Number of People That Can Be Seen in a Grid		Medium
2283	Check if Number Has Equal Digit Count and Digit Value	JavaScript TypeScript	Easy
2284	Sender With Largest Word Count	TypeScript	Medium
2285	Maximum Total Importance of Roads		Medium
2286	Booking Concert Tickets in Groups		Hard
2287	Rearrange Characters to Make Target String	JavaScript TypeScript	Easy
2288	Apply Discount to Prices	TypeScript	Medium
2289	Steps to Make Array Non-decreasing		Medium
2290	Minimum Obstacle Removal to Reach Corner		Hard
2291	Maximum Profit From Trading Stocks		Medium
2292	Products With Three or More Orders in Two Consecutive Years		Medium
2293	Min Max Game	JavaScript TypeScript	Easy
2294	Partition Array Such That Maximum Difference Is K	JavaScript TypeScript	Medium
2295	Replace Elements in an Array	JavaScript TypeScript	Medium
2296	Design a Text Editor		Hard
2297	Jump Game VIII		Medium
2298	Tasks Count in the Weekend		Medium
2299	Strong Password Checker II	JavaScript TypeScript	Easy
2300	Successful Pairs of Spells and Potions		Medium
2301	Match Substring After Replacement		Hard
2302	Count Subarrays With Score Less Than K		Hard
2303	Calculate Amount Paid in Taxes	JavaScript TypeScript	Easy
2304	Minimum Path Cost in a Grid		Medium
2305	Fair Distribution of Cookies		Medium
2306	Naming a Company		Hard
2307	Check for Contradictions in Equations		Hard
2308	Arrange Table by Gender		Medium
2309	Greatest English Letter in Upper and Lower Case	JavaScript TypeScript	Easy
2310	Sum of Numbers With Units Digit K		Medium
2311	Longest Binary Subsequence Less Than or Equal to K		Medium
2312	Selling Pieces of Wood		Hard
2313	Minimum Flips in Binary Tree to Get Result		Hard
2314	The First Day of the Maximum Recorded Degree in Each City		Medium
2315	Count Asterisks	JavaScript TypeScript	Easy
2316	Count Unreachable Pairs of Nodes in an Undirected Graph	JavaScript TypeScript	Medium
2317	Maximum XOR After Operations		Medium
2318	Number of Distinct Roll Sequences		Hard
2319	Check if Matrix Is X-Matrix	JavaScript TypeScript	Easy
2320	Count Number of Ways to Place Houses		Medium
2321	Maximum Score Of Spliced Array		Hard
2322	Minimum Score After Removals on a Tree		Hard
2323	Find Minimum Time to Finish All Jobs II		Medium
2324	Product Sales Analysis IV		Medium
2325	Decode the Message	JavaScript TypeScript	Easy
2326	Spiral Matrix IV		Medium
2327	Number of People Aware of a Secret		Medium
2328	Number of Increasing Paths in a Grid		Hard
2329	Product Sales Analysis V		Easy
2330	Valid Palindrome IV		Medium
2331	Evaluate Boolean Binary Tree	Go JavaScript TypeScript	Easy
2332	The Latest Time to Catch a Bus		Medium
2333	Minimum Sum of Squared Difference	TypeScript	Medium
2334	Subarray With Elements Greater Than Varying Threshold		Hard
2335	Minimum Amount of Time to Fill Cups	JavaScript TypeScript	Easy
2336	Smallest Number in Infinite Set	TypeScript	Medium
2337	Move Pieces to Obtain a String		Medium
2338	Count the Number of Ideal Arrays		Hard
2339	All the Matches of the League		Easy
2340	Minimum Adjacent Swaps to Make a Valid Array		Medium
2341	Maximum Number of Pairs in Array	JavaScript TypeScript	Easy
2342	Max Sum of a Pair With Equal Sum of Digits	JavaScript TypeScript	Medium
2343	Query Kth Smallest Trimmed Number		Medium
2344	Minimum Deletions to Make Array Divisible		Hard
2345	Finding the Number of Visible Mountains		Medium
2346	Compute the Rank as a Percentage		Medium
2347	Best Poker Hand	JavaScript TypeScript	Easy
2348	Number of Zero-Filled Subarrays	JavaScript TypeScript	Medium
2349	Design a Number Container System	TypeScript	Medium
2350	Shortest Impossible Sequence of Rolls		Hard
2351	First Letter to Appear Twice	JavaScript TypeScript	Easy
2352	Equal Row and Column Pairs	JavaScript TypeScript	Medium
2353	Design a Food Rating System		Medium
2354	Number of Excellent Pairs		Hard
2355	Maximum Number of Books You Can Take		Hard
2356	Number of Unique Subjects Taught by Each Teacher		Easy
2357	Make Array Zero by Subtracting Equal Amounts	JavaScript TypeScript	Easy
2358	Maximum Number of Groups Entering a Competition		Medium
2359	Find Closest Node to Given Two Nodes	JavaScript TypeScript	Medium
2360	Longest Cycle in a Graph		Hard
2361	Minimum Costs Using the Train Line		Hard
2362	Generate the Invoice		Hard
2363	Merge Similar Items	JavaScript TypeScript	Easy
2364	Count Number of Bad Pairs	JavaScript TypeScript	Medium
2365	Task Scheduler II		Medium
2366	Minimum Replacements to Sort the Array		Hard
2367	Number of Arithmetic Triplets	JavaScript TypeScript	Easy
2368	Reachable Nodes With Restrictions	JavaScript TypeScript	Medium
2369	Check if There is a Valid Partition For The Array		Medium
2370	Longest Ideal Subsequence		Medium
2371	Minimize Maximum Value in a Grid		Hard
2372	Calculate the Influence of Each Salesperson		Medium
2373	Largest Local Values in a Matrix	JavaScript TypeScript	Easy
2374	Node With Highest Edge Score	JavaScript TypeScript	Medium
2375	Construct Smallest Number From DI String		Medium
2376	Count Special Integers		Hard
2377	Sort the Olympic Table		Easy
2378	Choose Edges to Maximize Score in a Tree		Medium
2379	Minimum Recolors to Get K Consecutive Black Blocks	JavaScript TypeScript	Easy
2380	Time Needed to Rearrange a Binary String		Medium
2381	Shifting Letters II	TypeScript	Medium
2382	Maximum Segment Sum After Removals		Hard
2383	Minimum Hours of Training to Win a Competition	JavaScript TypeScript	Easy
2384	Largest Palindromic Number	JavaScript TypeScript	Medium
2385	Amount of Time for Binary Tree to Be Infected	JavaScript TypeScript	Medium
2386	Find the K-Sum of an Array		Hard
2387	Median of a Row Wise Sorted Matrix		Medium
2388	Change Null Values in a Table to the Previous Value		Medium
2389	Longest Subsequence With Limited Sum	JavaScript TypeScript	Easy
2390	Removing Stars From a String	JavaScript TypeScript	Medium
2391	Minimum Amount of Time to Collect Garbage	JavaScript TypeScript	Medium
2392	Build a Matrix With Conditions		Hard
2393	Count Strictly Increasing Subarrays		Medium
2394	Employees With Deductions		Medium
2395	Find Subarrays With Equal Sum	JavaScript TypeScript	Easy
2396	Strictly Palindromic Number	JavaScript TypeScript	Medium
2397	Maximum Rows Covered by Columns		Medium
2398	Maximum Number of Robots Within Budget		Hard
2399	Check Distances Between Same Letters	JavaScript TypeScript	Easy
2400	Number of Ways to Reach a Position After Exactly k Steps		Medium
2401	Longest Nice Subarray	TypeScript	Medium
2402	Meeting Rooms III		Hard
2403	Minimum Time to Kill All Monsters		Hard
2404	Most Frequent Even Element	JavaScript TypeScript	Easy
2405	Optimal Partition of String	JavaScript TypeScript	Medium
2406	Divide Intervals Into Minimum Number of Groups		Medium
2407	Longest Increasing Subsequence II		Hard
2408	Design SQL		Medium
2409	Count Days Spent Together	JavaScript TypeScript	Easy
2410	Maximum Matching of Players With Trainers	JavaScript TypeScript	Medium
2411	Smallest Subarrays With Maximum Bitwise OR	TypeScript	Medium
2412	Minimum Money Required Before Transactions		Hard
2413	Smallest Even Multiple	JavaScript TypeScript	Easy
2414	Length of the Longest Alphabetical Continuous Substring	JavaScript TypeScript	Medium
2415	Reverse Odd Levels of Binary Tree	JavaScript TypeScript	Medium
2416	Sum of Prefix Scores of Strings		Hard
2417	Closest Fair Integer		Medium
2418	Sort the People	JavaScript TypeScript	Easy
2419	Longest Subarray With Maximum Bitwise AND	JavaScript TypeScript	Medium
2420	Find All Good Indices	TypeScript	Medium
2421	Number of Good Paths		Hard
2422	Merge Operations to Turn Array Into a Palindrome		Medium
2423	Remove Letter To Equalize Frequency	JavaScript TypeScript	Easy
2424	Longest Uploaded Prefix	TypeScript	Medium
2425	Bitwise XOR of All Pairings	JavaScript TypeScript	Medium
2426	Number of Pairs Satisfying Inequality	TypeScript	Hard
2427	Number of Common Factors	JavaScript TypeScript	Easy
2428	Maximum Sum of an Hourglass	JavaScript TypeScript	Medium
2429	Minimize XOR	JavaScript TypeScript	Medium
2430	Maximum Deletions on a String		Hard
2431	Maximize Total Tastiness of Purchased Fruits		Medium
2432	The Employee That Worked on the Longest Task	JavaScript TypeScript	Easy
2433	Find The Original Array of Prefix Xor	JavaScript TypeScript	Medium
2434	Using a Robot to Print the Lexicographically Smallest String	TypeScript	Medium
2435	Paths in Matrix Whose Sum Is Divisible by K		Hard
2436	Minimum Split Into Subarrays With GCD Greater Than One		Medium
2437	Number of Valid Clock Times	JavaScript TypeScript	Easy
2438	Range Product Queries of Powers	JavaScript TypeScript	Medium
2439	Minimize Maximum of Array	TypeScript	Medium
2440	Create Components With Same Value		Hard
2441	Largest Positive Integer That Exists With Its Negative	JavaScript TypeScript	Easy
2442	Count Number of Distinct Integers After Reverse Operations	JavaScript TypeScript	Medium
2443	Sum of Number and Its Reverse	JavaScript TypeScript	Medium
2444	Count Subarrays With Fixed Bounds		Hard
2445	Number of Nodes With Value One		Medium
2446	Determine if Two Events Have Conflict	JavaScript TypeScript	Easy
2447	Number of Subarrays With GCD Equal to K	TypeScript	Medium
2448	Minimum Cost to Make Array Equal		Hard
2449	Minimum Number of Operations to Make Arrays Similar		Hard
2450	Number of Distinct Binary Strings After Applying Operations		Medium
2451	Odd String Difference	JavaScript TypeScript	Easy
2452	Words Within Two Edits of Dictionary	JavaScript TypeScript	Medium
2453	Destroy Sequential Targets	JavaScript TypeScript	Medium
2454	Next Greater Element IV	JavaScript TypeScript	Hard
2455	Average Value of Even Numbers That Are Divisible by Three	JavaScript TypeScript	Easy
2456	Most Popular Video Creator	JavaScript TypeScript	Medium
2457	Minimum Addition to Make Integer Beautiful	JavaScript TypeScript	Medium
2458	Height of Binary Tree After Subtree Removal Queries	JavaScript TypeScript	Hard
2459	Sort Array by Moving Items to Empty Space		Hard
2460	Apply Operations to an Array	JavaScript TypeScript	Easy
2461	Maximum Sum of Distinct Subarrays With Length K	JavaScript TypeScript	Medium
2462	Total Cost to Hire K Workers	JavaScript TypeScript	Medium
2463	Minimum Total Distance Traveled		Hard
2464	Minimum Subarrays in a Valid Split		Medium
2465	Number of Distinct Averages	JavaScript TypeScript	Easy
2466	Count Ways To Build Good Strings	JavaScript TypeScript	Medium
2467	Most Profitable Path in a Tree	JavaScript TypeScript	Medium
2468	Split Message Based on Limit	JavaScript TypeScript	Hard
2469	Convert the Temperature	JavaScript TypeScript	Easy
2470	Number of Subarrays With LCM Equal to K	JavaScript TypeScript	Medium
2471	Minimum Number of Operations to Sort a Binary Tree by Level	JavaScript TypeScript	Medium
2472	Maximum Number of Non-overlapping Palindrome Substrings		Hard
2473	Minimum Cost to Buy Apples		Medium
2474	Customers With Strictly Increasing Purchases		Hard
2475	Number of Unequal Triplets in Array	JavaScript TypeScript	Easy
2476	Closest Nodes Queries in a Binary Search Tree	JavaScript TypeScript	Medium
2477	Minimum Fuel Cost to Report to the Capital	JavaScript TypeScript	Medium
2478	Number of Beautiful Partitions	JavaScript TypeScript	Hard
2479	Maximum XOR of Two Non-Overlapping Subtrees		Hard
2480	Form a Chemical Bond		Easy
2481	Minimum Cuts to Divide a Circle	JavaScript TypeScript	Easy
2482	Difference Between Ones and Zeros in Row and Column	JavaScript TypeScript	Medium
2483	Minimum Penalty for a Shop	JavaScript TypeScript	Medium
2484	Count Palindromic Subsequences		Hard
2485	Find the Pivot Integer	JavaScript TypeScript	Easy
2486	Append Characters to String to Make Subsequence	JavaScript TypeScript	Medium
2487	Remove Nodes From Linked List	JavaScript TypeScript	Medium
2488	Count Subarrays With Median K		Hard
2489	Number of Substrings With Fixed Ratio		Medium
2490	Circular Sentence	JavaScript TypeScript	Easy
2491	Divide Players Into Teams of Equal Skill	JavaScript TypeScript	Medium
2492	Minimum Score of a Path Between Two Cities	JavaScript TypeScript	Medium
2493	Divide Nodes Into the Maximum Number of Groups		Hard
2494	Merge Overlapping Events in the Same Hall		Hard
2495	Number of Subarrays Having Even Product		Medium
2496	Maximum Value of a String in an Array	JavaScript TypeScript	Easy
2497	Maximum Star Sum of a Graph	JavaScript TypeScript	Medium
2498	Frog Jump II	JavaScript TypeScript	Medium
2499	Minimum Total Cost to Make Arrays Unequal		Hard
2500	Delete Greatest Value in Each Row	JavaScript TypeScript	Easy
2501	Longest Square Streak in an Array	JavaScript TypeScript	Medium
2502	Design Memory Allocator	JavaScript TypeScript	Medium
2503	Maximum Number of Points From Grid Queries		Hard
2504	Concatenate the Name and the Profession		Easy
2505	Bitwise OR of All Subsequence Sums		Medium
2506	Count Pairs Of Similar Strings	JavaScript TypeScript	Easy
2507	Smallest Value After Replacing With Sum of Prime Factors	JavaScript TypeScript	Medium
2508	Add Edges to Make Degrees of All Nodes Even		Hard
2509	Cycle Length Queries in a Tree		Hard
2510	Check if There is a Path With Equal Number of 0's And 1's		Medium
2511	Maximum Enemy Forts That Can Be Captured	TypeScript	Easy
2512	Reward Top K Students	TypeScript	Medium
2513	Minimize the Maximum of Two Arrays		Medium
2514	Count Anagrams		Hard
2515	Shortest Distance to Target String in a Circular Array	TypeScript	Easy
2516	Take K of Each Character From Left and Right	TypeScript	Medium
2517	Maximum Tastiness of Candy Basket	TypeScript	Medium
2518	Number of Great Partitions		Hard
2519	Count the Number of K-Big Indices		Hard
2520	Count the Digits That Divide a Number	JavaScript TypeScript	Easy
2521	Distinct Prime Factors of Product of Array	TypeScript	Medium
2522	Partition String Into Substrings With Values at Most K	TypeScript	Medium
2523	Closest Prime Numbers in Range	TypeScript	Medium
2524	Maximum Frequency Score of a Subarray		Hard
2525	Categorize Box According to Criteria	JavaScript TypeScript	Easy
2526	Find Consecutive Integers from a Data Stream	JavaScript TypeScript	Medium
2527	Find Xor-Beauty of Array	TypeScript	Medium
2528	Maximize the Minimum Powered City		Hard
2529	Maximum Count of Positive Integer and Negative Integer	JavaScript TypeScript	Easy
2530	Maximal Score After Applying K Operations	TypeScript	Medium
2531	Make Number of Distinct Characters Equal		Medium
2532	Time to Cross a Bridge		Hard
2533	Number of Good Binary Strings		Medium
2534	Time Taken to Cross the Door		Hard
2535	Difference Between Element Sum and Digit Sum of an Array	JavaScript TypeScript	Easy
2536	Increment Submatrices by One	TypeScript	Medium
2537	Count the Number of Good Subarrays	TypeScript	Medium
2538	Difference Between Maximum and Minimum Price Sum		Hard
2539	Count the Number of Good Subsequences		Medium
2540	Minimum Common Value	JavaScript TypeScript	Easy
2541	Minimum Operations to Make Array Equal II		Medium
2542	Maximum Subsequence Score		Medium
2543	Check if Point Is Reachable		Hard
2544	Alternating Digit Sum	JavaScript TypeScript	Easy
2545	Sort the Students by Their Kth Score	JavaScript TypeScript	Medium
2546	Apply Bitwise Operations to Make Strings Equal	JavaScript TypeScript	Medium
2547	Minimum Cost to Split an Array		Hard
2548	Maximum Price to Fill a Bag		Medium
2549	Count Distinct Numbers on Board	JavaScript TypeScript	Easy
2550	Count Collisions of Monkeys on a Polygon		Medium
2551	Put Marbles in Bags		Hard
2552	Count Increasing Quadruplets		Hard
2553	Separate the Digits in an Array	TypeScript	Easy
2554	Maximum Number of Integers to Choose From a Range I	JavaScript TypeScript	Medium
2555	Maximize Win From Two Segments		Medium
2556	Disconnect Path in a Binary Matrix by at Most One Flip		Medium
2557	Maximum Number of Integers to Choose From a Range II		Medium
2558	Take Gifts From the Richest Pile	TypeScript	Easy
2559	Count Vowel Strings in Ranges	TypeScript	Medium
2560	House Robber IV	TypeScript	Medium
2561	Rearranging Fruits		Hard
2562	Find the Array Concatenation Value	TypeScript	Easy
2563	Count the Number of Fair Pairs	TypeScript	Medium
2564	Substring XOR Queries	TypeScript	Medium
2565	Subsequence With the Minimum Score		Hard
2566	Maximum Difference by Remapping a Digit	TypeScript	Easy
2567	Minimum Score by Changing Two Elements	TypeScript	Medium
2568	Minimum Impossible OR	TypeScript	Medium
2569	Handling Sum Queries After Update	TypeScript	Hard
2570	Merge Two 2D Arrays by Summing Values	TypeScript	Easy
2571	Minimum Operations to Reduce an Integer to 0	TypeScript	Medium
2572	Count the Number of Square-Free Subsets	TypeScript	Medium
2573	Find the String with LCP	TypeScript	Hard
2574	Left and Right Sum Differences	TypeScript	Easy
2575	Find the Divisibility Array of a String	TypeScript	Medium
2576	Find the Maximum Number of Marked Indices	TypeScript	Medium
2577	Minimum Time to Visit a Cell In a Grid		Hard
2578	Split With Minimum Sum	TypeScript	Easy
2579	Count Total Number of Colored Cells	TypeScript	Medium
2580	Count Ways to Group Overlapping Ranges	TypeScript	Medium
2581	Count Number of Possible Root Nodes		Hard
2582	Pass the Pillow	TypeScript	Easy
2583	Kth Largest Sum in a Binary Tree	TypeScript	Medium
2584	Split the Array to Make Coprime Products	TypeScript	Hard
2585	Number of Ways to Earn Points	TypeScript	Hard
2586	Count the Number of Vowel Strings in Range	TypeScript	Easy
2587	Rearrange Array to Maximize Prefix Score	TypeScript	Medium
2588	Count the Number of Beautiful Subarrays	TypeScript	Medium
2589	Minimum Time to Complete All Tasks		Hard
2590	Design a Todo List		Medium
2591	Distribute Money to Maximum Children	TypeScript	Easy
2592	Maximize Greatness of an Array	TypeScript	Medium
2593	Find Score of an Array After Marking All Elements	TypeScript	Medium
2594	Minimum Time to Repair Cars	TypeScript	Medium
2595	Number of Even and Odd Bits	TypeScript	Easy
2596	Check Knight Tour Configuration	TypeScript	Medium
2597	The Number of Beautiful Subsets	TypeScript	Medium
2598	Smallest Missing Non-negative Integer After Operations	TypeScript	Medium
2599	Make the Prefix Sum Non-negative		Medium
2600	K Items With the Maximum Sum	TypeScript	Easy
2601	Prime Subtraction Operation	TypeScript	Medium
2602	Minimum Operations to Make All Array Elements Equal	TypeScript	Medium
2603	Collect Coins in a Tree		Hard
2604	Minimum Time to Eat All Grains		Hard
2605	Form Smallest Number From Two Digit Arrays	TypeScript	Easy
2606	Find the Substring With Maximum Cost	TypeScript	Medium
2607	Make K-Subarray Sums Equal	TypeScript	Medium
2608	Shortest Cycle in a Graph		Hard
2609	Find the Longest Balanced Substring of a Binary String	TypeScript	Easy
2610	Convert an Array Into a 2D Array With Conditions	TypeScript	Medium
2611	Mice and Cheese	TypeScript	Medium
2612	Minimum Reverse Operations		Hard
2613	Beautiful Pairs		Hard
2614	Prime In Diagonal	TypeScript	Easy
2615	Sum of Distances	TypeScript	Medium
2616	Minimize the Maximum Difference of Pairs	TypeScript	Medium
2617	Minimum Number of Visited Cells in a Grid		Hard
2618	Check if Object Instance of Class	TypeScript	Medium
2619	Array Prototype Last	TypeScript	Easy
2620	Counter	TypeScript	Easy
2621	Sleep	TypeScript	Easy
2622	Cache With Time Limit	TypeScript	Medium
2623	Memoize	TypeScript	Medium
2624	Snail Traversal	TypeScript	Medium
2625	Flatten Deeply Nested Array	TypeScript	Medium
2626	Array Reduce Transformation	TypeScript	Easy
2627	Debounce	TypeScript	Medium
2628	JSON Deep Equal	TypeScript	Medium
2629	Function Composition	TypeScript	Easy
2630	Memoize II	TypeScript	Hard
2631	Group By	TypeScript	Medium
2632	Curry	TypeScript	Medium
2633	Convert Object to JSON String	TypeScript	Medium
2634	Filter Elements from Array	TypeScript	Easy
2635	Apply Transform Over Each Element in Array	TypeScript	Easy
2636	Promise Pool	TypeScript	Medium
2637	Promise Time Limit	TypeScript	Easy
2638	Count the Number of K-Free Subsets		Medium
2639	Find the Width of Columns of a Grid	TypeScript	Easy
2640	Find the Score of All Prefixes of an Array	TypeScript	Medium
2641	Cousins in Binary Tree II	TypeScript	Medium
2642	Design Graph With Shortest Path Calculator	TypeScript	Hard
2643	Row With Maximum Ones	TypeScript	Easy
2644	Find the Maximum Divisibility Score	TypeScript	Easy
2645	Minimum Additions to Make Valid String	TypeScript	Medium
2646	Minimize the Total Price of the Trips		Hard
2647	Color the Triangle Red		Hard
2648	Generate Fibonacci Sequence	TypeScript	Easy
2649	Nested Array Generator	TypeScript	Medium
2650	Design Cancellable Function		Hard
2651	Calculate Delayed Arrival Time	TypeScript	Easy
2652	Sum Multiples	TypeScript	Easy
2653	Sliding Subarray Beauty	TypeScript	Medium
2654	Minimum Number of Operations to Make All Array Elements Equal to 1	TypeScript	Medium
2655	Find Maximal Uncovered Ranges		Medium
2656	Maximum Sum With Exactly K Elements	TypeScript	Easy
2657	Find the Prefix Common Array of Two Arrays	TypeScript	Medium
2658	Maximum Number of Fish in a Grid	TypeScript	Medium
2659	Make Array Empty	TypeScript	Hard
2660	Determine the Winner of a Bowling Game	TypeScript	Easy
2661	First Completely Painted Row or Column	TypeScript	Medium
2662	Minimum Cost of a Path With Special Roads	TypeScript	Medium
2663	Lexicographically Smallest Beautiful String		Hard
2664	The Knight’s Tour		Medium
2665	Counter II	TypeScript	Easy
2666	Allow One Function Call	TypeScript	Easy
2667	Create Hello World Function	TypeScript	Easy
2668	Find Latest Salaries		Easy
2669	Count Artist Occurrences On Spotify Ranking List		Easy
2670	Find the Distinct Difference Array	TypeScript	Easy
2671	Frequency Tracker	TypeScript	Medium
2672	Number of Adjacent Elements With the Same Color	TypeScript	Medium
2673	Make Costs of Paths Equal in a Binary Tree	TypeScript	Medium
2674	Split a Circular Linked List		Medium
2675	Array of Objects to Matrix	TypeScript	Medium
2676	Throttle	TypeScript	Medium
2677	Chunk Array	TypeScript	Easy
2678	Number of Senior Citizens	TypeScript	Easy
2679	Sum in a Matrix	TypeScript	Medium
2680	Maximum OR		Medium
2681	Power of Heroes		Hard
2682	Find the Losers of the Circular Game	TypeScript	Easy
2683	Neighboring Bitwise XOR	TypeScript	Medium
2684	Maximum Number of Moves in a Grid		Medium
2685	Count the Number of Complete Components		Medium
2686	Immediate Food Delivery III		Medium
2687	Bikes Last Time Used		Easy
2688	Find Active Users		Medium
2689	Extract Kth Character From The Rope Tree		Easy
2690	Infinite Method Object		Easy
2691	Immutability Helper		Hard
2692	Make Object Immutable		Medium
2693	Call Function with Custom Context	TypeScript	Medium
2694	Event Emitter	TypeScript	Medium
2695	Array Wrapper	TypeScript	Easy
2696	Minimum String Length After Removing Substrings	TypeScript	Easy
2697	Lexicographically Smallest Palindrome	TypeScript	Easy
2698	Find the Punishment Number of an Integer	TypeScript	Medium
2699	Modify Graph Edge Weights		Hard
2700	Differences Between Two Objects	TypeScript	Medium
2701	Consecutive Transactions with Increasing Amounts		Hard
2702	Minimum Operations to Make Numbers Non-positive		Hard
2703	Return Length of Arguments Passed	TypeScript	Easy
2704	To Be Or Not To Be	TypeScript	Easy
2705	Compact Object	TypeScript	Medium
2706	Buy Two Chocolates	TypeScript	Easy
2707	Extra Characters in a String		Medium
2708	Maximum Strength of a Group		Medium
2709	Greatest Common Divisor Traversal		Hard
2710	Remove Trailing Zeros From a String	TypeScript	Easy
2711	Difference of Number of Distinct Values on Diagonals	TypeScript	Medium
2712	Minimum Cost to Make All Characters Equal		Medium
2713	Maximum Strictly Increasing Cells in a Matrix		Hard
2714	Find Shortest Path with K Hops		Hard
2715	Execute Cancellable Function With Delay	TypeScript	Easy
2716	Minimize String Length	TypeScript	Easy
2717	Semi-Ordered Permutation	TypeScript	Easy
2718	Sum of Matrix After Queries	TypeScript	Medium
2719	Count of Integers		Hard
2720	Popularity Percentage		Hard
2721	Execute Asynchronous Functions in Parallel	TypeScript	Medium
2722	Join Two Arrays by ID	TypeScript	Medium
2723	Add Two Promises	TypeScript	Easy
2724	Sort By	TypeScript	Easy
2725	Interval Cancellation	TypeScript	Easy
2726	Calculator with Method Chaining	TypeScript	Easy
2727	Is Object Empty	TypeScript	Easy
2728	Count Houses in a Circular Street		Easy
2729	Check if The Number is Fascinating	TypeScript	Easy
2730	Find the Longest Semi-Repetitive Substring	TypeScript	Medium
2731	Movement of Robots		Medium
2732	Find a Good Subset of the Matrix		Hard
2733	Neither Minimum nor Maximum	TypeScript	Easy
2734	Lexicographically Smallest String After Substring Operation	TypeScript	Medium
2735	Collecting Chocolates		Medium
2736	Maximum Sum Queries		Hard
2737	Find the Closest Marked Node		Medium
2738	Count Occurrences in Text		Medium
2739	Total Distance Traveled	TypeScript	Easy
2740	Find the Value of the Partition	TypeScript	Medium
2741	Special Permutations		Medium
2742	Painting the Walls		Hard
2743	Count Substrings Without Repeating Character		Medium
2744	Find Maximum Number of String Pairs	TypeScript	Easy
2745	Construct the Longest New String		Medium
2746	Decremental String Concatenation		Medium
2747	Count Zero Request Servers		Medium
2748	Number of Beautiful Pairs	TypeScript	Easy
2749	Minimum Operations to Make the Integer Zero		Medium
2750	Ways to Split Array Into Good Subarrays		Medium
2751	Robot Collisions		Hard
2752	Customers with Maximum Number of Transactions on Consecutive Days		Hard
2753	Count Houses in a Circular Street II		Hard
2754	Bind Function to Context		Medium
2755	Deep Merge of Two Objects		Medium
2756	Query Batching		Hard
2757	Generate Circular Array Values		Medium
2758	Next Day		Easy
2759	Convert JSON String to Object		Hard
2760	Longest Even Odd Subarray With Threshold		Easy
2761	Prime Pairs With Target Sum		Medium
2762	Continuous Subarrays		Medium
2763	Sum of Imbalance Numbers of All Subarrays		Hard
2764	is Array a Preorder of Some ‌Binary Tree		Medium
LCP01	Guess Numbers	JavaScript TypeScript	Easy
LCP02	Deep Dark Fraction	JavaScript TypeScript	Easy
LCP03	Programmable Robot		Medium
LCP04	Broken Board Dominoes		Hard
LCP05	Coin Bonus		Hard
LCP06	拿硬币	JavaScript TypeScript	Easy
LCP07	传递信息		Easy
LCP08	剧情触发时间		Medium
LCP09	最小跳跃次数		Hard
LCP10	二叉树任务调度		Hard
LCP11	期望个数统计		Easy
LCP12	小张刷题计划	TypeScript	Medium
LCP13	寻宝		Hard
LCP14	切分数组		Hard
LCP15	游乐园的迷宫		Hard
LCP16	游乐园的游览计划		Hard
LCP17	速算机器人	JavaScript TypeScript	Easy
LCP18	早餐组合	JavaScript TypeScript	Easy
LCP19	秋叶收藏集		Medium
LCP20	快速公交		Hard
LCP21	追逐游戏		Hard
LCP22	黑白方格画		Easy
LCP23	魔术排列		Medium
LCP24	数字游戏		Hard
LCP25	古董键盘		Hard
LCP26	导航装置		Hard
LCP27	黑盒光线反射		Hard
LCP28	采购方案	JavaScript TypeScript	Easy
LCP29	乐团站位		Medium
LCP30	魔塔游戏		Medium
LCP31	变换的迷宫		Hard
LCP32	批量处理任务		Hard
LCP33	蓄水		Easy
LCP34	二叉树染色		Medium
LCP35	电动车游城市		Hard
LCP36	最多牌组数		Hard
LCP37	最小矩形面积		Hard
LCP38	守卫城堡		Hard
LCP39	无人机方阵		Easy
LCP40	心算挑战		Easy
LCP41	黑白翻转棋		Medium
LCP42	玩具套圈		Hard
LCP43	十字路口的交通		Hard
LCP44	开幕式焰火	JavaScript TypeScript	Easy
LCP45	自行车炫技赛场		Medium
LCP46	志愿者调配		Medium
LCP47	入场安检		Hard
LCP48	无限棋局		Hard
LCP49	环形闯关游戏		Hard
LCP50	宝石补给	JavaScript TypeScript	Easy
LCP51	烹饪料理		Easy
LCP52	二叉搜索树染色		Medium
LCP53	守护太空城		Hard
LCP54	夺回据点		Hard
LCP55	采集果实	JavaScript TypeScript	Easy
LCP56	信物传送		Medium
LCP57	打地鼠		Hard
LCP58	积木拼接		Hard
LCP59	搭桥过河		Hard
LCP60	力扣泡泡龙		Hard
LCP61	气温变化趋势	JavaScript TypeScript	Easy
LCP62	交通枢纽		Medium
LCP63	弹珠游戏		Medium
LCP64	二叉树灯饰		Medium
LCP65	舒适的湿度		Hard
LCP66	最小展台数量	JavaScript TypeScript	Easy
LCP67	装饰树	JavaScript TypeScript	Medium
LCP68	美观的花束		Medium
LCP69	Hello LeetCode!		Hard
LCP70	沙地治理		Hard
LCP71	集水器		Hard
LCP72	补给马车	TypeScript	Easy
LCP73	探险营地		Medium
LCP74	最强祝福力场		Medium
LCP75	传送卷轴		Hard
LCP76	魔法棋盘		Hard
LCP77	符文储备	TypeScript	Easy
LCP78	城墙防线		Medium
LCP79	提取咒文		Medium
LCP80	生物进化录		Hard
LCP81	与非的谜题		Hard
LCP82	万灵之树		Hard
剑指Offer03	数组中重复的数字 LCOF	JavaScript TypeScript	Easy
剑指Offer04	二维数组中的查找 LCOF	JavaScript TypeScript	Medium
剑指Offer05	替换空格 LCOF	JavaScript TypeScript	Easy
剑指Offer06	从尾到头打印链表 LCOF	Go JavaScript TypeScript	Easy
剑指Offer07	重建二叉树 LCOF	JavaScript TypeScript	Medium
剑指Offer09	用两个栈实现队列 LCOF	JavaScript TypeScript	Easy
剑指Offer10-I	斐波那契数列 LCOF	JavaScript TypeScript	Easy
剑指Offer10-II	青蛙跳台阶问题 LCOF	JavaScript TypeScript	Easy
剑指Offer11	旋转数组的最小数字 LCOF	JavaScript	Easy
剑指Offer12	矩阵中的路径 LCOF	JavaScript TypeScript	Medium
剑指Offer13	机器人的运动范围 LCOF	JavaScript TypeScript	Medium
剑指Offer14-I	剪绳子 LCOF	JavaScript TypeScript	Medium
剑指Offer14-II	剪绳子 II LCOF	JavaScript TypeScript	Medium
剑指Offer15	二进制中1的个数 LCOF	JavaScript	Easy
剑指Offer16	数值的整数次方 LCOF	JavaScript TypeScript	Medium
剑指Offer17	打印从1到最大的n位数 LCOF	JavaScript TypeScript	Easy
剑指Offer18	删除链表的节点 LCOF	Go JavaScript TypeScript	Easy
剑指Offer19	正则表达式匹配 LCOF	JavaScript TypeScript	Hard
剑指Offer20	表示数值的字符串 LCOF		Medium
剑指Offer21	调整数组顺序使奇数位于偶数前面 LCOF	JavaScript TypeScript	Easy
剑指Offer22	链表中倒数第k个节点 LCOF	Go JavaScript TypeScript	Easy
剑指Offer24	反转链表 LCOF	Go JavaScript TypeScript	Easy
剑指Offer25	合并两个排序的链表 LCOF	Go JavaScript TypeScript	Easy
剑指Offer26	树的子结构 LCOF	JavaScript TypeScript	Medium
剑指Offer27	二叉树的镜像 LCOF	JavaScript TypeScript	Easy
剑指Offer28	对称的二叉树 LCOF	JavaScript TypeScript	Easy
剑指Offer29	顺时针打印矩阵 LCOF	JavaScript TypeScript	Easy
剑指Offer30	包含min函数的栈 LCOF	JavaScript TypeScript	Easy
剑指Offer31	栈的压入、弹出序列 LCOF	JavaScript TypeScript	Medium
剑指Offer32-I	从上到下打印二叉树 LCOF	JavaScript TypeScript	Medium
剑指Offer32-II	从上到下打印二叉树 II LCOF	JavaScript TypeScript	Easy
剑指Offer32-III	从上到下打印二叉树 III LCOF	JavaScript TypeScript	Medium
剑指Offer33	二叉搜索树的后序遍历序列 LCOF	JavaScript	Medium
剑指Offer34	二叉树中和为某一值的路径 LCOF	JavaScript TypeScript	Medium
剑指Offer35	复杂链表的复制 LCOF	JavaScript	Medium
剑指Offer36	二叉搜索树与双向链表 LCOF	JavaScript	Medium
剑指Offer37	序列化二叉树 LCOF	JavaScript	Hard
剑指Offer38	字符串的排列 LCOF	JavaScript TypeScript	Medium
剑指Offer39	数组中出现次数超过一半的数字 LCOF	JavaScript TypeScript	Easy
剑指Offer40	最小的k个数 LCOF	JavaScript TypeScript	Easy
剑指Offer41	数据流中的中位数 LCOF	JavaScript TypeScript	Hard
剑指Offer42	连续子数组的最大和 LCOF	JavaScript TypeScript	Easy
剑指Offer43	1～n整数中1出现的次数 LCOF	JavaScript	Hard
剑指Offer44	数字序列中某一位的数字 LCOF	JavaScript	Medium
剑指Offer45	把数组排成最小的数 LCOF	JavaScript TypeScript	Medium
剑指Offer46	把数字翻译成字符串 LCOF	JavaScript TypeScript	Medium
剑指Offer47	礼物的最大价值 LCOF	JavaScript TypeScript	Medium
剑指Offer48	最长不含重复字符的子字符串 LCOF	JavaScript	Medium
剑指Offer49	丑数 LCOF	JavaScript	Medium
剑指Offer50	第一个只出现一次的字符 LCOF	JavaScript TypeScript	Easy
剑指Offer51	数组中的逆序对 LCOF	JavaScript	Hard
剑指Offer52	两个链表的第一个公共节点 LCOF	JavaScript	Easy
剑指Offer53-I	在排序数组中查找数字 LCOF	JavaScript TypeScript	Easy
剑指Offer53-II	缺失的数字 LCOF	JavaScript TypeScript	Easy
剑指Offer54	二叉搜索树的第k大节点 LCOF	JavaScript TypeScript	Easy
剑指Offer55-I	二叉树的深度 LCOF	JavaScript TypeScript	Easy
剑指Offer55-II	平衡二叉树 LCOF	JavaScript TypeScript	Easy
剑指Offer56-I	数组中数字出现的次数 LCOF	JavaScript TypeScript	Medium
剑指Offer56-II	数组中数字出现的次数 II LCOF	JavaScript	Medium
剑指Offer57	和为s的两个数字 LCOF	JavaScript	Easy
剑指Offer57-II	和为s的连续正数序列 LCOF	JavaScript TypeScript	Easy
剑指Offer58-I	翻转单词顺序 LCOF	JavaScript TypeScript	Easy
剑指Offer58-II	左旋转字符串 LCOF	JavaScript TypeScript	Easy
剑指Offer59-I	滑动窗口的最大值 LCOF	JavaScript TypeScript	Hard
剑指Offer59-II	队列的最大值 LCOF	JavaScript TypeScript	Medium
剑指Offer60	n个骰子的点数 LCOF	JavaScript	Medium
剑指Offer61	扑克牌中的顺子 LCOF	JavaScript TypeScript	Easy
剑指Offer62	圆圈中最后剩下的数字 LCOF		Easy
剑指Offer63	股票的最大利润 LCOF	JavaScript TypeScript	Medium
剑指Offer64	求1+2+…+n LCOF	JavaScript TypeScript	Medium
剑指Offer65	不用加减乘除做加法 LCOF	JavaScript TypeScript	Easy
剑指Offer66	构建乘积数组 LCOF	JavaScript TypeScript	Medium
剑指Offer67	把字符串转换成整数 LCOF		Medium
剑指Offer68-I	二叉搜索树的最近公共祖先 LCOF	JavaScript Python3 TypeScript	Easy
剑指Offer68-II	二叉树的最近公共祖先 LCOF	JavaScript Python3 TypeScript	Easy
剑指OfferII001	整数除法		Easy
剑指OfferII002	二进制加法	JavaScript	Easy
剑指OfferII003	前 n 个数字二进制中 1 的个数	JavaScript TypeScript	Easy
剑指OfferII004	只出现一次的数字		Medium
剑指OfferII005	单词长度的最大乘积	JavaScript TypeScript	Medium
剑指OfferII006	排序数组中两个数字之和	JavaScript	Easy
剑指OfferII007	数组中和为 0 的三个数	TypeScript	Medium
剑指OfferII008	和大于等于 target 的最短子数组	TypeScript	Medium
剑指OfferII009	乘积小于 K 的子数组	TypeScript	Medium
剑指OfferII010	和为 k 的子数组	JavaScript TypeScript	Medium
剑指OfferII011	0 和 1 个数相同的子数组	TypeScript	Medium
剑指OfferII012	左右两边子数组的和相等	JavaScript TypeScript	Easy
剑指OfferII013	二维子矩阵的和	JavaScript TypeScript	Medium
剑指OfferII014	字符串中的变位词	JavaScript TypeScript	Medium
剑指OfferII015	字符串中的所有变位词	JavaScript TypeScript	Medium
剑指OfferII016	不含重复字符的最长子字符串	TypeScript	Medium
剑指OfferII017	含有所有字符的最短字符串		Hard
剑指OfferII018	有效的回文	JavaScript TypeScript	Easy
剑指OfferII019	最多删除一个字符得到回文	JavaScript	Easy
剑指OfferII020	回文子字符串的个数		Medium
剑指OfferII021	删除链表的倒数第 n 个结点	JavaScript TypeScript	Medium
剑指OfferII022	链表中环的入口节点	JavaScript	Medium
剑指OfferII023	两个链表的第一个重合节点	JavaScript	Easy
剑指OfferII024	反转链表	Go JavaScript TypeScript	Easy
剑指OfferII025	链表中的两数相加	TypeScript	Medium
剑指OfferII026	重排链表	TypeScript	Medium
剑指OfferII027	回文链表	JavaScript TypeScript	Easy
剑指OfferII028	展平多级双向链表	TypeScript	Medium
剑指OfferII029	排序的循环链表		Medium
剑指OfferII030	插入、删除和随机访问都是 O(1) 的容器	TypeScript	Medium
剑指OfferII031	最近最少使用缓存		Medium
剑指OfferII032	有效的变位词	JavaScript	Easy
剑指OfferII033	变位词组	JavaScript	Medium
剑指OfferII034	外星语言是否排序	JavaScript	Easy
剑指OfferII035	最小时间差	JavaScript TypeScript	Medium
剑指OfferII036	后缀表达式	JavaScript	Medium
剑指OfferII037	小行星碰撞	JavaScript	Medium
剑指OfferII038	每日温度	JavaScript	Medium
剑指OfferII039	直方图最大矩形面积		Hard
剑指OfferII040	矩阵中最大的矩形		Hard
剑指OfferII041	滑动窗口的平均值	JavaScript TypeScript	Easy
剑指OfferII042	最近请求次数	JavaScript TypeScript	Easy
剑指OfferII043	往完全二叉树添加节点	TypeScript	Medium
剑指OfferII044	二叉树每层的最大值	JavaScript TypeScript	Medium
剑指OfferII045	二叉树最底层最左边的值	JavaScript	Medium
剑指OfferII046	二叉树的右侧视图	JavaScript	Medium
剑指OfferII047	二叉树剪枝	JavaScript	Medium
剑指OfferII048	序列化与反序列化二叉树	TypeScript	Hard
剑指OfferII049	从根节点到叶节点的路径数字之和	JavaScript	Medium
剑指OfferII050	向下的路径节点之和	TypeScript	Medium
剑指OfferII051	节点之和最大的路径	TypeScript	Hard
剑指OfferII052	展平二叉搜索树	JavaScript	Easy
剑指OfferII053	二叉搜索树中的中序后继	JavaScript TypeScript	Medium
剑指OfferII054	所有大于等于节点的值之和	JavaScript	Medium
剑指OfferII055	二叉搜索树迭代器	JavaScript TypeScript	Medium
剑指OfferII056	二叉搜索树中两个节点之和	JavaScript	Easy
剑指OfferII057	值和下标之差都在给定的范围内		Medium
剑指OfferII058	日程表	TypeScript	Medium
剑指OfferII059	数据流的第 K 大数值	JavaScript	Easy
剑指OfferII060	出现频率最高的 k 个数字		Medium
剑指OfferII061	和最小的 k 个数对	TypeScript	Medium
剑指OfferII062	实现前缀树	TypeScript	Medium
剑指OfferII063	替换单词	TypeScript	Medium
剑指OfferII064	神奇的字典		Medium
剑指OfferII065	最短的单词编码		Medium
剑指OfferII066	单词之和	TypeScript	Medium
剑指OfferII067	最大的异或		Medium
剑指OfferII068	查找插入位置	JavaScript	Easy
剑指OfferII069	山峰数组的顶部	JavaScript	Easy
剑指OfferII070	排序数组中只出现一次的数字	JavaScript TypeScript	Medium
剑指OfferII071	按权重生成随机数	TypeScript	Medium
剑指OfferII072	求平方根	JavaScript TypeScript	Easy
剑指OfferII073	狒狒吃香蕉	JavaScript	Medium
剑指OfferII074	合并区间	TypeScript	Medium
剑指OfferII075	数组相对排序	JavaScript TypeScript	Easy
剑指OfferII076	数组中的第 k 大的数字		Medium
剑指OfferII077	链表排序	TypeScript	Medium
剑指OfferII078	合并排序链表	TypeScript	Hard
剑指OfferII079	所有子集	JavaScript TypeScript	Medium
剑指OfferII080	含有 k 个元素的组合	JavaScript TypeScript	Medium
剑指OfferII081	允许重复选择元素的组合	JavaScript TypeScript	Medium
剑指OfferII082	含有重复元素集合的组合	JavaScript TypeScript	Medium
剑指OfferII083	没有重复元素集合的全排列	JavaScript TypeScript	Medium
剑指OfferII084	含有重复元素集合的全排列	JavaScript TypeScript	Medium
剑指OfferII085	生成匹配的括号	JavaScript TypeScript	Medium
剑指OfferII086	分割回文子字符串		Medium
剑指OfferII087	复原 IP		Medium
剑指OfferII088	爬楼梯的最少成本	JavaScript TypeScript	Easy
剑指OfferII089	房屋偷盗	JavaScript	Medium
剑指OfferII090	环形房屋偷盗	TypeScript	Medium
剑指OfferII091	粉刷房子		Medium
剑指OfferII092	翻转字符	JavaScript TypeScript	Medium
剑指OfferII093	最长斐波那契数列		Medium
剑指OfferII094	最少回文分割		Hard
剑指OfferII095	最长公共子序列	TypeScript	Medium
剑指OfferII096	字符串交织		Medium
剑指OfferII097	子序列的数目		Hard
剑指OfferII098	路径的数目	JavaScript TypeScript	Medium
剑指OfferII099	最小路径之和	JavaScript TypeScript	Medium
剑指OfferII100	三角形中最小路径之和	JavaScript TypeScript	Medium
剑指OfferII101	分割等和子集	JavaScript TypeScript	Easy
剑指OfferII102	加减的目标值	TypeScript	Medium
剑指OfferII103	最少的硬币数目	JavaScript TypeScript	Medium
剑指OfferII104	排列的数目	TypeScript	Medium
剑指OfferII105	岛屿的最大面积	JavaScript TypeScript	Medium
剑指OfferII106	二分图	JavaScript TypeScript	Medium
剑指OfferII107	矩阵中的距离	JavaScript TypeScript	Medium
剑指OfferII108	单词演变		Hard
剑指OfferII109	开密码锁		Medium
剑指OfferII110	所有路径	JavaScript TypeScript	Medium
剑指OfferII111	计算除法	JavaScript TypeScript	Medium
剑指OfferII112	最长递增路径		Hard
剑指OfferII113	课程顺序	JavaScript TypeScript	Medium
剑指OfferII114	外星文字典	JavaScript TypeScript	Hard
剑指OfferII115	重建序列		Medium
剑指OfferII116	省份数量	JavaScript	Medium
剑指OfferII117	相似的字符串		Hard
剑指OfferII118	多余的边		Medium
剑指OfferII119	最长连续序列		Medium
面试题01_01	Is Unique LCCI	JavaScript TypeScript	Easy
面试题01_02	Check Permutation LCCI	JavaScript TypeScript	Easy
面试题01_03	String to URL LCCI	JavaScript TypeScript	Easy
面试题01_04	Palindrome Permutation LCCI	JavaScript TypeScript	Easy
面试题01_05	One Away LCCI	JavaScript TypeScript	Medium
面试题01_06	Compress String LCCI	JavaScript TypeScript	Easy
面试题01_07	Rotate Matrix LCCI	JavaScript TypeScript	Medium
面试题01_08	Zero Matrix LCCI	JavaScript TypeScript	Medium
面试题01_09	String Rotation LCCI	JavaScript TypeScript	Easy
面试题02_01	Remove Duplicate Node LCCI	JavaScript TypeScript	Easy
面试题02_02	Kth Node From End of List LCCI	JavaScript TypeScript	Easy
面试题02_03	Delete Middle Node LCCI	JavaScript	Easy
面试题02_04	Partition List LCCI	JavaScript	Medium
面试题02_05	Sum Lists LCCI	JavaScript TypeScript	Medium
面试题02_06	Palindrome Linked List LCCI	JavaScript TypeScript	Easy
面试题02_07	Intersection of Two Linked Lists LCCI	JavaScript	Easy
面试题02_08	Linked List Cycle LCCI	JavaScript	Medium
面试题03_01	Three in One LCCI	JavaScript TypeScript	Easy
面试题03_02	Min Stack LCCI	JavaScript TypeScript	Easy
面试题03_03	Stack of Plates LCCI	JavaScript TypeScript	Medium
面试题03_04	Implement Queue using Stacks LCCI	JavaScript TypeScript	Easy
面试题03_05	Sort of Stacks LCCI	JavaScript TypeScript	Medium
面试题03_06	Animal Shelter LCCI	JavaScript TypeScript	Easy
面试题04_01	Route Between Nodes LCCI	JavaScript TypeScript	Medium
面试题04_02	Minimum Height Tree LCCI	JavaScript TypeScript	Easy
面试题04_03	List of Depth LCCI	JavaScript TypeScript	Medium
面试题04_04	Check Balance LCCI	JavaScript TypeScript	Easy
面试题04_05	Legal Binary Search Tree LCCI	JavaScript TypeScript	Medium
面试题04_06	Successor LCCI	JavaScript	Medium
面试题04_08	First Common Ancestor LCCI	JavaScript	Medium
面试题04_09	BST Sequences LCCI	JavaScript TypeScript	Hard
面试题04_10	Check SubTree LCCI	JavaScript TypeScript	Medium
面试题04_12	Paths with Sum LCCI	JavaScript TypeScript	Medium
面试题05_01	Insert Into Bits LCCI	JavaScript TypeScript	Easy
面试题05_02	Binary Number to String LCCI	JavaScript TypeScript	Medium
面试题05_03	Reverse Bits LCCI	JavaScript	Easy
面试题05_04	Closed Number LCCI	TypeScript	Medium
面试题05_06	Convert Integer LCCI	JavaScript TypeScript	Easy
面试题05_07	Exchange LCCI	JavaScript TypeScript	Easy
面试题05_08	Draw Line LCCI		Medium
面试题08_01	Three Steps Problem LCCI	JavaScript TypeScript	Easy
面试题08_02	Robot in a Grid LCCI	JavaScript TypeScript	Medium
面试题08_03	Magic Index LCCI	JavaScript TypeScript	Easy
面试题08_04	Power Set LCCI	JavaScript TypeScript	Medium
面试题08_05	Recursive Mulitply LCCI	JavaScript	Medium
面试题08_06	Hanota LCCI	JavaScript TypeScript	Easy
面试题08_07	Permutation I LCCI	JavaScript TypeScript	Medium
面试题08_08	Permutation II LCCI	JavaScript TypeScript	Medium
面试题08_09	Bracket LCCI	JavaScript TypeScript	Medium
面试题08_10	Color Fill LCCI	JavaScript TypeScript	Easy
面试题08_11	Coin LCCI	JavaScript TypeScript	Medium
面试题08_12	Eight Queens LCCI		Hard
面试题08_13	Pile Box LCCI		Hard
面试题08_14	Boolean Evaluation LCCI		Medium
面试题10_01	Sorted Merge LCCI	JavaScript TypeScript	Easy
面试题10_02	Group Anagrams LCCI	JavaScript TypeScript	Medium
面试题10_03	Search Rotate Array LCCI	JavaScript	Medium
面试题10_05	Sparse Array Search LCCI	JavaScript TypeScript	Easy
面试题10_09	Sorted Matrix Search LCCI	JavaScript	Medium
面试题10_10	Rank from Stream LCCI	JavaScript TypeScript	Medium
面试题10_11	Peaks and Valleys LCCI	JavaScript	Medium
面试题16_01	Swap Numbers LCCI	JavaScript TypeScript	Medium
面试题16_02	Words Frequency LCCI	JavaScript TypeScript	Medium
面试题16_03	Intersection LCCI		Hard
面试题16_04	Tic-Tac-Toe LCCI	JavaScript TypeScript	Medium
面试题16_05	Factorial Zeros LCCI	JavaScript TypeScript	Easy
面试题16_06	Smallest Difference LCCI	JavaScript TypeScript	Medium
面试题16_07	Maximum LCCI	JavaScript TypeScript	Easy
面试题16_08	English Int LCCI	JavaScript	Hard
面试题16_09	Operations LCCI		Medium
面试题16_10	Living People LCCI	JavaScript TypeScript	Medium
面试题16_11	Diving Board LCCI	JavaScript TypeScript	Easy
面试题16_13	Bisect Squares LCCI		Medium
面试题16_14	Best Line LCCI		Medium
面试题16_15	Master Mind LCCI	JavaScript TypeScript	Easy
面试题16_16	Sub Sort LCCI		Medium
面试题16_17	Contiguous Sequence LCCI	JavaScript TypeScript	Easy
面试题16_18	Pattern Matching LCCI		Medium
面试题16_19	Pond Sizes LCCI	JavaScript TypeScript	Medium
面试题16_20	T9 LCCI	JavaScript TypeScript	Medium
面试题16_21	Sum Swap LCCI	JavaScript TypeScript	Medium
面试题16_22	Langtons Ant LCCI		Medium
面试题16_24	Pairs With Sum LCCI	JavaScript TypeScript	Medium
面试题16_25	LRU Cache LCCI	JavaScript	Medium
面试题16_26	Calculator LCCI		Medium
面试题17_01	Add Without Plus LCCI	JavaScript TypeScript	Easy
面试题17_04	Missing Number LCCI	JavaScript TypeScript	Easy
面试题17_05	Find Longest Subarray LCCI	JavaScript	Medium
面试题17_06	Number Of 2s In Range LCCI		Hard
面试题17_07	Baby Names LCCI	JavaScript TypeScript	Medium
面试题17_08	Circus Tower LCCI		Medium
面试题17_09	Get Kth Magic Number LCCI	JavaScript TypeScript	Medium
面试题17_10	Find Majority Element LCCI	JavaScript TypeScript	Easy
面试题17_11	Find Closest LCCI	JavaScript TypeScript	Medium
面试题17_12	BiNode LCCI	JavaScript TypeScript	Easy
面试题17_13	Re-Space LCCI		Medium
面试题17_14	Smallest K LCCI	JavaScript TypeScript	Medium
面试题17_15	Longest Word LCCI		Medium
面试题17_16	The Masseuse LCCI	JavaScript TypeScript	Easy
面试题17_17	Multi Search LCCI		Medium
面试题17_18	Shortest Supersequence LCCI		Medium
面试题17_19	Missing Two LCCI	JavaScript TypeScript	Hard
面试题17_20	Continuous Median LCCI	JavaScript TypeScript	Hard
面试题17_21	Volume of Histogram LCCI	JavaScript	Hard
面试题17_22	Word Transformer LCCI		Medium
面试题17_23	Max Black Square LCCI		Medium
面试题17_24	Max Submatrix LCCI		Hard
面试题17_25	Word Rectangle LCCI		Hard
面试题17_26	Sparse Similarity LCCI		Hard
LCS01	下载插件	TypeScript	Easy
LCS02	完成一半题目	TypeScript	Easy
LCS03	主题空间	TypeScript	Medium

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