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Thread: IndexOutOfBound

  1. #1
    Junior Member
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    Default IndexOutOfBound

    Hi all,

    I'm getting the mentioned exception while trying to merge two int arrays.

    Here's the code..

     
    public static int[] MergeArrays(int[] ArrayA, int[] ArrayB)
      {
          int ArrayAindex = ArrayA.length;
          int[] MergedArray = new int[ArrayA.length + ArrayB.length];
          int MergedIndex = MergedArray.length;
     
          for (int x = 0; x < ArrayAindex; x++)
          {
              MergedArray[x] = ArrayA[x];
          }
     
          int y;
          int z;
     
          for (y = ArrayAindex; y < MergedIndex; ArrayAindex++)
             for (z = 0; z < ArrayB.length; z++)
             {
                MergedArray[ArrayAindex] = ArrayB[z];
     
             }
     
          for (int m = 0; m < MergedArray.length; m++)
          {
              System.out.print("MergedValues: " +  MergedArray[m]);
              System.out.println("");
              System.out.print(MergedArray[m]);
          }
          return MergedArray;
      }

    Just cant seem to find out whats wrong...


  2. #2
    Super Moderator helloworld922's Avatar
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    Default Re: IndexOutOfBound

    You're algorithm is putting all the values of ArrayB into every spot in MergedArray... Use a counter that is updated in the main loop.

    // merging the second half of the array
    int counter = ArrayA.length;
    for (int i = 0; i < ArrayB.length; i++)
    {
         MergedArray[counter] = ArrayB[i];
         counter++;
    }

  3. The Following User Says Thank You to helloworld922 For This Useful Post:

    Kumarrrr (February 26th, 2010)

  4. #3
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    Thumbs up Re: IndexOutOfBound

    And now why didn't I think of that.. haha

    Thanks bro.

  5. #4
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    Default Re: IndexOutOfBound

    It works fine when dealing with integers < 10;
    But I get java.lang.ArrayIndexOutOfBoundsException when the integers get huge;