package main

import "fmt"

func dummy(ch chan int, arr []int) {
    for _, v := range arr {
        ch <- v
    }
    close(ch)
}

func merge(a chan int, b chan int) {
    v1, ok1 := <-a
    v2, ok2 := <-b
    for ok1 && ok2 {
        if v1 == v2 {
            v1, ok1 = <-a
            v2, ok2 = <-b
            continue
        }
        if v1 < v2 {
            fmt.Printf("%d ", v1)
            v1, ok1 = <-a
        }
        if v2 < v1 {
            fmt.Printf("%d ", v2)
            v2, ok2 = <-b
        }
    }

    for ok1{
        fmt.Printf("%d ", v1)
        v1, ok1 = <-a
    }

    for ok2{
        fmt.Printf("%d ", v2)
        v2, ok2 = <-b
    }
}

func main() {
    ch1 := make(chan int)
    ch2 := make(chan int)

    arr1 := []int{1, 5, 7, 8, 23, 24, 50}
    arr2 := []int{1, 3, 6, 8, 23}

    go dummy(ch1, arr1)
    go dummy(ch2, arr2)

    merge(ch1, ch2)
}