生成随机数

randonum.go

package main


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


func main() {
    for i := 0; i < 10; i++ {
        a := rand.Int()
        fmt.Printf("%d / ", a)
    }
    fmt.Println()
    for i := 0; i < 5; i++ {
        r := rand.Intn(8)
        fmt.Printf("%d / ", r)
    }
    fmt.Println()
    timens := int64(time.Now().Nanosecond())
    fmt.Println(timens)
    rand.Seed(timens)
    for i := 0; i < 10; i++ {
        fmt.Printf("%2.2f / ", 100*rand.Float32())
    }

}