add: slices - first part

16-slices/04-slices-vs-arrays-unique-nums/01-with-arrays/main.go

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+// 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"
+	"time"
+)
+
+func main() {
+	rand.Seed(time.Now().UnixNano())
+
+	const max = 5
+	var uniques [max]int
+
+	// It's harder to make a program dynamic using arrays
+	// max, _ := strconv.Atoi(os.Args[1])
+	// var uniques [10]int
+
+loop:
+	for found := 0; found < max; {
+		n := rand.Intn(max) + 1
+		fmt.Print(n, " ")
+
+		for _, u := range uniques {
+			if u == n {
+				continue loop
+			}
+		}
+
+		uniques[found] = n
+		found++
+	}
+
+	fmt.Println("\n\nuniques:", uniques)
+}