Golang implements generating non-repeating random numbers

package test import ( "fmt" "math/rand" "time" ) //生成若干个不重复的随机数 func RandomTestBase() { //测试5次 for i := 0; i < 5; i++ { nums := generateRandomNumber(10, 30, 10) fmt.Println(nums) } } //生成count个[start,end)结束的不重复的随机数 func generateRandomNumber(start int, end int, count int) []int { //范围检查 if end < start || (end-start) < count { return nil } //存放结果的slice nums := make([]int, 0) //随机数生成器，加入时间戳保证每次生成的随机数不一样 r := rand.New(rand.NewSource(time.Now().UnixNano())) for len(nums) < count { //生成随机数 num := r.Intn((end - start)) + start //查重 exist := false for _, v := range nums { if v == num { exist = true break } } if !exist { nums = append(nums, num) } } return nums }