subsonic-tui/internal/common/shuffle.go

package common

import (
	"crypto/rand"
	"math/big"
	"reflect"
)

func ShuffleSlice(slice interface{}) {
	rv := reflect.ValueOf(slice)
	swap := reflect.Swapper(slice)

	length := rv.Len()

	for i := length - 1; i > 0; i-- {
		j, err := rand.Int(rand.Reader, big.NewInt(int64(i+1)))
		if err != nil {
			panic("Shuffle error")
		}

		swap(i, int(j.Int64()))
	}
}