利用Golang生成整数随机数方法示例

<&＃63;php
echo mt_rand(-988, 888);

func GenerateRandnum() int {
 rand.Seed(time.Now().Unix())
 randNum := rand.Intn(100)
 return randNum
}

func GenerateRangeNum(min, max int) int {
 rand.Seed(time.Now().Unix())
 randNum := rand.Intn(max - min) + min
 return randNum
}

func main() {
 GenerateRandnum()
 GenerateRangeNum(888, 900)
}

package main
 
import (
 "fmt"
 "math/rand"
 "time"
)
 
// GenerateRandnum 生成最大范围内随机数
func GenerateRandnum() int {
 rand.Seed(time.Now().Unix())
 randNum := rand.Intn(100)
 
 fmt.Printf("rand is %v\n", randNum)
 
 return randNum
}
 
// GenerateRangeNum 生成一个区间范围的随机数
func GenerateRangeNum(min, max int) int {
  rand.Seed(time.Now().Unix())
 randNum := rand.Intn(max - min)
 randNum = randNum + min
 fmt.Printf("rand is %v\n", randNum)
 return randNum
}
 
func main() {
 GenerateRandnum()
 GenerateRangeNum(888, 900)
}