Add the SelfTest13 class

Author: pavel-rossinsky

src/main/java/com/guide/c5/SelfTest13.java

@@ -0,0 +1,19 @@
+package com.guide.c5;
+
+// Rewrite the MinMax class shown earlier so that it uses a for-each style for loop.
+public class SelfTest13 {
+    public static void main(String[] args) {
+        int[] nums = {99, -10, 100123, 18, -978, 5623, 463, -9, 287, 49};
+
+        int min, max;
+
+        min = max = nums[0];
+
+        for (int x : nums) {
+            if (x < min) min = x;
+            if (x > max) max = x;
+        }
+
+        System.out.println("min and max: " + min + " " + max);
+    }
+}