10-sec-comp: Add random-numbers challenge

Author: razvand

10-security-components/random-numbers/MyRandom.java

@@ -0,0 +1,12 @@
+import java.util.Random;
+
+public class MyRandom {
+    public static void main(String[] args) {
+        Random number = new Random(123L);
+        for (int i = 0; i < 20; i++) {
+            // Generate another random integer in the range [0, 20].
+            int n = number.nextInt(21);
+            System.out.println(n);
+        }
+    }
+}