Golang把字符串数组、[]interface{}打乱、切片乱序

func Random2(strings []string) string {  //字符串数组

    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
}


func Random(obj []interface{}) []interface{} { //interface

    for i := len(obj) - 1; i > 0; i-- {
        num := rand.Intn(i + 1)
        obj[i], obj[num] = obj[num], obj[i]
    }

    new_obj := make([]interface{}, 0)
    for i := 0; i < len(obj); i++ {
        new_obj = append(new_obj,obj[i])
    }
    return new_obj
}

func randSlice(slice interface{}) { //切片乱序
    rv := reflect.ValueOf(slice)
    if rv.Type().Kind() != reflect.Slice {
        return
    }

    length := rv.Len()
    if length < 2 {
        return
    }

    swap := reflect.Swapper(slice)
    rand.Seed(time.Now().Unix())
    for i := length - 1; i >= 0; i-- {
        j := rand.Intn(length)
        swap(i, j)
    }
    return
}