hd/services/lottery/rand_lottery.go

package lottery_service

import (
	"math/rand"
	"time"
)

type LotteryUser struct {
	UserId    int64
	Username  string
	UserPhone string
	Avatar    string
	PrizeName string
	LadderId  int64
	PrizeImg  string
}

func RandLotteryUser(users []*LotteryUser) {
	r := rand.New(rand.Source(rand.NewSource(time.Now().Unix())))
	if len(users) <= 0 {
		return
	}
	for i := len(users) - 1; i > 0; i-- {
		num := r.Intn(i + 1)
		users[i], users[num] = users[num], users[i]
	}
}