package main

import (
	"fmt"
	"math/rand"
	"time"
)

func main()  {

	randSrc := rand.NewSource(time.Now().UnixNano() + rand.Int63n(9999))
	rand.New(randSrc)
	//
	index := rand.Perm(100)
	fmt.Printf("randSrc:%v \n", randSrc)
	fmt.Println(index)

}