Fisher - Yates shuffle Go package

shuffle.go

package shuffle

import (
  "math/rand"
  "time"
)

func init() {
  rand.Seed(time.Now().UnixNano())
}

// Fisher - Yates shuffle
func FYShuffle(deck []int) {
  for j := len(deck) - 1; j > 0; j-- {
    k := rand.Intn(j + 1)
    deck[j], deck[k] = deck[k], deck[j]
  }
}