Sleep sort

main.go

package main

/*
$ go run main.go
[3 9 2 4 1]
[1 2 3 4 9]
*/

import (
	"fmt"
	"time"
)

func main() {
	X := [5]int64{3, 9, 2, 4, 1}
	var Y []int64
	ch := make(chan int64)

	for _, v := range X {
		go sleep(ch, v)
	}

	for {
		if len(Y) == len(X) {
			break
		}
		c := <-ch
		Y = append(Y, c)
		time.Sleep(time.Millisecond * 1)
	}

	fmt.Println(X)
	fmt.Println(Y)
}

func sleep(ch chan int64, msec int64) {
	time.Sleep(time.Millisecond * time.Duration(msec))
	ch <- msec
}