Exercise : What's the output?

• What's the output of the following Java method?

  public static void mystery() {
      for (int i = 1; i <= 10; i++) {
          for (int j = 1; j <= 10; j++) {
              System.out.print(i * j + "\t");
          }
          System.out.println();
      }
  }
  

• (Try to figure it out without running the code...
  If you give up, copy and paste it into jGrasp and run it!)
• Recall: \t represents a tab character.

Exercise - answer

Answer:

1	2	3	4	5	6	7	8	9	10
2	4	6	8	10	12	14	16	18	20
3	6	9	12	15	18	21	24	27	30
4	8	12	16	20	24	28	32	36	40
5	10	15	20	25	30	35	40	45	50
6	12	18	24	30	36	42	48	54	60
7	14	21	28	35	42	49	56	63	70
8	16	24	32	40	48	56	64	72	80
9	18	27	36	45	54	63	72	81	90
10	20	30	40	50	60	70	80	90	100