random-numbers.go

package main

import "time"
import "fmt"
import "math/rand"

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.Println(r3.Intn(100))
}

/*
$ go run src/random-numbers/random-numbers.go
81,87
0.6645600532184904
7.1885709359349015,7.123187485356329
4,29
5,87
5,87
*/