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42 lines
714 B
42 lines
714 B
package gostring
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import (
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"math/rand"
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"time"
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)
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// GenerateRandomNumber 生成count个[start,end)结束的不重复的随机数
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func GenerateRandomNumber(start int, end int, count int) []int {
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// 范围检查
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if end < start || (end-start) < count {
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return nil
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}
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// 存放结果的slice
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nums := make([]int, 0)
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// 随机数生成器，加入时间戳保证每次生成的随机数不一样
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r := rand.New(rand.NewSource(time.Now().UnixNano()))
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for len(nums) < count {
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// 生成随机数
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num := r.Intn(end-start) + start
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// 查重
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exist := false
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for _, v := range nums {
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if v == num {
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exist = true
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break
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}
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}
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if !exist {
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nums = append(nums, num)
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}
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}
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return nums
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}
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