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Thread: Java method question

  1. #1
    Member Scorks's Avatar
    Join Date
    Jan 2013
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    Default Java method question

    This was a question on a quiz we had in my programming course. The answer is 70 as the output, but I'm having trouble understanding why. Could someone please tell me, step by step, why that comes out to be the output?

    1.      public class MysteriousClass {
    2.          public static void main(String[] args) {
    3.              int i = 20;
    4.              int b = m2(i);
    5.              System.out.println(b + i);
    6.          }
    7.          public static int m1(int i){
    8.              int n = 0;
    9.              while (n * n <= i){ 
    10.                 n++; 
    11.             }
    12.             return n - 1;
    13.         }
    14.         public static int m2(int a){ 
    15.             int b = 0;
    16.             for (int n = 0; n < a; n++){
    17.                 int i = m1(n);
    18.                 b = b + i;
    19.             }
    20.             return b;
    21.         }
    22.   }

  2. #2
    Super Moderator Norm's Avatar
    Join Date
    May 2010
    Eastern Florida
    Thanked 2,421 Times in 2,374 Posts

    Default Re: Java method question

    To see what the code is doing, try debugging the code by adding lots of println statements to print out the values of the variables as they are used and changed.
    If you don't understand my answer, don't ignore it, ask a question.

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