0129-Go-随机数

环境

• Time 2022-08-25
• Go 1.19

前言

说明

参考：https://gobyexample.com/random-numbers

目标

使用 Go 语言的随机数。

示例

package main

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

func main() {

    fmt.Print(rand.Intn(100), ",")
    fmt.Print(rand.Intn(100))
    fmt.Println()

    fmt.Println(rand.Float64())

    fmt.Print((rand.Float64()*5)+5, ",")
    fmt.Print((rand.Float64() * 5) + 5)
    fmt.Println()

    s1 := rand.NewSource(time.Now().UnixNano())
    r1 := rand.New(s1)

    fmt.Print(r1.Intn(100), ",")
    fmt.Print(r1.Intn(100))
    fmt.Println()

    s2 := rand.NewSource(42)
    r2 := rand.New(s2)
    fmt.Print(r2.Intn(100), ",")
    fmt.Print(r2.Intn(100))
    fmt.Println()
    s3 := rand.NewSource(42)
    r3 := rand.New(s3)
    fmt.Print(r3.Intn(100), ",")
    fmt.Print(r3.Intn(100))
}

总结

使用 Go 语言的随机数。

附录