rabestro/sololearn-challenges rabestro/sololearn-challenges

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  • Language
    Java
  • License
    MIT License
  • Created almost 5 years ago
  • Updated over 2 years ago
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Repository Details

Descriptions of SoloLearn Coding Challenges (all 72, including pro) and solutions in C, Java, Python and Ruby

Sololearn Coding Challenges

There are all 72 problems from SoloLearn Code Coach with full descriptions and my solutions in Java. The problems grouped by dificulty: Easy, Medium, Hard. The codes have written on mobile device in Sololearn sandbox, sucessfully run and passes all tests by Sololearn. The link to my profile at Sololearn: https://www.sololearn.com/Profile/15186890/

As an answer to the #OneLiners challenge from SoloLearn I also created One-Line solutions in Ruby and One-Statement solutions in Java language for about 60% problems.

Easy

Description Java Used Java API classes and methods, notes
Popsicles Popsicles.java Ternary operator
Halloween Candy HalloweenCandy.java Math
Fruit Bowl FruitBowl.java
Ballpark Orders BallparkOrders.java Map, BigDecimal, Stream, Scaner::tokens (Java 11)
Cheer Creator CheerCreator.java String::repeat (Java 11)
Skee-ball SkeeBall.java
Paint Costs PaintCosts.java BigDecimal, RoundingMode
Argentina Argentina.java I use multiplication to keep max precision
Balconies Balconies.java Scanner::useDelimiter
Candles Candles.java
Duct Tape DuctTape.java Math
Easter Eggs EasterEggs.java Ternary operator
Guard Flamingos GuardFlamingos.java
Gotham City GothamCity.java MessageFormat::format
Hovercraft Hovercraft BigDecimal
Izzy the Iguana IzzyIguana.java Map, Scaner::tokens (Java 11)
Kaleidoscopes Kaleidoscopes.java BigDecimal (There is errors in SoloLearn tests)
Jungle Camping JungleCamping.java Map, Scaner::tokens (Java 11)
Land Ho! LandHo.java
Neverland Neverland.java System.out::printf
Extra-Terrestrials ExtraTerrestrials.java StringBuilder::reverse
Zip Code Validator ZipCodeValidator.java Pattern::matches
Vowel Counter VowelCounterRE.java String::replaceAll
Isogram Detector IsogramDetector.java Pattern::matches
Multiples Multiples.java IntStream, lambda
Number of Ones NumberOfOnes.java Integer::bitCount

Medium

Description Java Used Java API classes and methods, notes
Pig Latin PigLatinRE.java String::replaceAll, RegEx
_ PigLatinStream.java Scanner::tokens, lambda
_ PigLatinClassic.java System.out::printf
Safety Deposit Boxes SafetyDepositBoxes.java String::replaceAll, RegEx (tricky?)
Roadrunner Roadrunner.java
Snap, Crackle and Pop SnapCrackleAndPop.java Stream, lambda
Deja Vu DejaVu.java Pattern::matches
The Spy Life TheSpyLife.java StringBuilder
Hex Color Code Generator HexColorCodeGenerator.java System.out::printf
Symbols Symbols.java String::replaceAll, RegEx
Super Sale SuperSale.java Stream
Duty Free DutyFree.java Stream
Carrot Cake CarrotCake.java System.out::printf
Building Blocks BuildingBlocks.java IntStream::generate
Name Buddy NameBuddy.java String::concat
_ NameBuddyRegEx.java String::matches
That's odd... ThatsOdd.java IntStream
No Numerals NoNumerals.java Map, Stream, lambda
Secret Message SecretMessage.java Stream, lambda
Divisible Divisible.java Stream, lambda
Even Numbers EvenNumbers.java IntStream
Military Time MilitaryTime.java Date & Time API Java 11
Tax Free TaxFree.java Stream
How Far? HowFar.java String::replaceAll, RegEx
Average Word Length AverageWordLength.java String::split, String::replaceAll
. AverageWordLengthStream.java Stream, Collectors::averagingInt
YouTube Link Finder YouTubeLinkFinder.java String::replaceAll, RegEx
Convert US date to EU date ConvertDate.java Date & Time API Java 11
Day of the Week DayOfWeek.java Date & Time API Java 11
Camel to Snake CamelToSnake.java String::replaceAll, RegEx
Days between dates DaysBetweenDates.java Date & Time API Java 11
Text Decompressor TextDecompressor.java Stream
Snowballing Numbers SnowballingNumbers.java Stream
Flowing Words FlowingWords.java RegEx
Splitting Strings SplittingStrings.java String::format, String::split, String::join, RegEx
Missing Numbers MissingNumbers.java Stream
Initials Initials.java Stream, RegEx
Credit Card Validator CreditCardValidator.java StringBuilder, Stream
CMYK to RGB CmykToRgb.java Math, float

Hard

Description Java Used Java API classes and methods, notes
New Driver's License NewDriversLicense.java Stream, lambda
It's a Sign ItsSign.java StringBuilder, Stream
Mathematics Mathematics.java Interface, Lambda, RegEx, Collections, Recursion
Password Validation PasswordValidation.java RegEx
Security Security.java RegEx
2D Map Map2D.java Math, String::indexOf
Hofstadter's Q-Sequence HofstadtersQSequence.java
Digits of Pi PiCalculation.java BigDecimal, Algorithm
Longest Common Substring Longest Common Substring
Poker Hand PokerHand.java Stream, RegEx
Word Rank Word Rank

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