Initial data commit

Task/Concurrent-computing/Go/concurrent-computing-2.go

@@ -0,0 +1,25 @@
+package main
+
+import (
+    "log"
+    "math/rand"
+    "os"
+    "sync"
+    "time"
+)
+
+func main() {
+    words := []string{"Enjoy", "Rosetta", "Code"}
+    rand.Seed(time.Now().UnixNano())
+    l := log.New(os.Stdout, "", 0)
+    var q sync.WaitGroup
+    q.Add(len(words))
+    for _, w := range words {
+        w := w
+        time.AfterFunc(time.Duration(rand.Int63n(1e9)), func() {
+            l.Println(w)
+            q.Done()
+        })
+    }
+    q.Wait()
+}