Go 言語でスライス/配列をランダムな順番でシャッフルっする ( #go shuffle array / slice / cards example ) - Qiita

// https://golang.org/pkg/math/rand/ package main import ( "fmt" "math/rand" "time" ) func main() { cards := []string{"2", "3", "4", "5", "6", "7", "8", "9", "10", "J", "Q", "K", "A"} cards4 := []string{} for i := 0; i < 4; i++ { cards4 = append(cards4, cards...) } rand.Seed(time.Now().UnixNano()) rand.Shuffle(len(cards4), func(i, j int) { cards4[i], cards4[j] = cards4[j], cards4[i] }) fmt.Println