Simple permutation package for golang
go get github.com/gitchander/permutationpackage main
import (
"fmt"
prmt "github.com/gitchander/permutation"
)
func main() {
a := []int{1, 2, 3}
p := prmt.New(prmt.IntSlice(a))
for p.Next() {
fmt.Println(a)
}
}result:
[1 2 3]
[2 1 3]
[3 1 2]
[1 3 2]
[2 3 1]
[3 2 1]
package main
import (
"fmt"
prmt "github.com/gitchander/permutation"
)
func main() {
a := []string{"alpha", "beta", "gamma"}
p := prmt.New(prmt.StringSlice(a))
for p.Next() {
fmt.Println(a)
}
}result:
[alpha beta gamma]
[beta alpha gamma]
[gamma alpha beta]
[alpha gamma beta]
[beta gamma alpha]
[gamma beta alpha]
a := []interface{}{-1, "control", 9.3}
data, err := prmt.NewAnySlice(a)
if err != nil {
log.Fatal(err)
}
p := prmt.New(data)
for p.Next() {
fmt.Println(a)
}or use MustAnySlice (panic if error):
a := []int{1, 2}
p := prmt.New(prmt.MustAnySlice(a))
for p.Next() {
fmt.Println(a)
}package main
import (
"fmt"
prmt "github.com/gitchander/permutation"
)
type Person struct {
Name string
Age int
}
type PersonSlice []Person
func (ps PersonSlice) Len() int { return len(ps) }
func (ps PersonSlice) Swap(i, j int) { ps[i], ps[j] = ps[j], ps[i] }
func main() {
a := []Person{
{Name: "one", Age: 1},
{Name: "two", Age: 2},
{Name: "three", Age: 3},
}
p := prmt.New(PersonSlice(a))
for p.Next() {
fmt.Println(a)
}
}result:
[{one 1} {two 2} {three 3}]
[{two 2} {one 1} {three 3}]
[{three 3} {one 1} {two 2}]
[{one 1} {three 3} {two 2}]
[{two 2} {three 3} {one 1}]
[{three 3} {two 2} {one 1}]