Untitled

package main

import (
    "fmt"
    "sync"
    "time"
)

func worker(id int, wg *sync.WaitGroup, jobs <-chan int, results chan<- int) {
    defer wg.Done()
    for j := range jobs {
        fmt.Printf("Worker %d started job %d\n", id, j)
        time.Sleep(time.Second) // Simulate a time-consuming job
        fmt.Printf("Worker %d finished job %d\n", id, j)
        results <- j * 2
    }
}

func main() {
    const numWorkers = 3
    const numJobs = 5

    jobs := make(chan int, numJobs)
    results := make(chan int, numJobs)

    var wg sync.WaitGroup

    for w := 1; w <= numWorkers; w++ {
        wg.Add(1)
        go worker(w, &wg, jobs, results)
    }

    for j := 1; j <= numJobs; j++ {
        jobs <- j
    }
    close(jobs)

    wg.Wait()
    close(results)

    for result := range results {
        fmt.Println("Result:", result)
    }
}