/** Method to test fillPattern1 */
 public static void testFillPattern1() {
   IntArrayWorker worker = new IntArrayWorker();
   int[][] nums = new int[3][4];
   worker.setMatrix(nums);
   worker.fillPattern1();
   System.out.println("fills with 2's on diagonal, 3's to left, and 1's to right");
   worker.print();
 }