add: moodly challenges docs

14-arrays/10-challenge-moodly-2/solution/main.go

@@ -0,0 +1,39 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
+package main
+
+import (
+	"fmt"
+	"math/rand"
+	"os"
+	"time"
+)
+
+func main() {
+	args := os.Args[1:]
+	if len(args) != 2 {
+		fmt.Println("[your name] [positive|negative]")
+		return
+	}
+
+	name, mood := args[0], args[1]
+
+	moods := [...][3]string{
+		{"happy 😀", "good 👍", "awesome 😎"},
+		{"sad 😞", "bad 👎", "terrible 😩"},
+	}
+
+	rand.Seed(time.Now().UnixNano())
+	n := rand.Intn(len(moods[0]))
+
+	var mi int
+	if mood != "positive" {
+		mi = 1
+	}
+	fmt.Printf("%s feels %s\n", name, moods[mi][n])
+}