func Random(strings []string) string {
for i := len(strings) - 1; i > 0; i-- {
num := rand.Intn(i + 1)
strings[i], strings[num] = strings[num], strings[i]
}
str := ""
for i := 0; i < len(strings); i++ {
str += strings[i]
}
return str
}
原文：https://www.cnblogs.com/mafeng/p/11590538.html