Ninja level 10 challenge 7

main.go

package main

import (
	"fmt"
	"sync"
)

func main() {

	var wg sync.WaitGroup
	c := make(chan int)

	go func() {
		for i := 0; i < 10; i++ {
			wg.Add(1)
			go func(m int) {
				for i := 0; i < 10; i++ {
					c <- i*10 + m
				}
				wg.Done()
			}(i)
		}
		wg.Wait()
		close(c)
	}()

	for v := range c {
		fmt.Println(v)
	}
}

Thank you for showing an alternative way of solving the problem.

I like your solution

I also tried this:

import (
	"fmt"
	"sync"
)

func main() {
	c := make(chan int)
	var wg sync.WaitGroup
	steps := 10
	var cycle int

	wg.Add(steps)
	for j := 0; j < steps; j++ {
		cycle += steps
		go func() {
			for i := 0; i < steps; i++ {
				c <- i
			}
		}()
		wg.Done()

	}
	wg.Wait()

	k := 0
	for v := range c {
		fmt.Println(k, v, cycle)
		k++
		if k == cycle {
			break
		}
	}

	fmt.Println("about to exit")
}