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Thread: Index out of bounds exception. Need help.

  1. #1
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    Default Index out of bounds exception. Need help.

    Hey all. I am struggling with this exercise from my book. My problem is that I can't even run the program, because it gives me
    Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 13
    at domashno.ten.longestSortedSequence(ten.java:37)
    at domashno.ten.main(ten.java:17)
    public static void main(String[] args) {
    		int[] arr = {3, 8, 10, 1,9, 14, -3, 0, 14, 207, 56, 98, 12};
     
    		longestSortedSequence(arr);
    		System.out.println(longestSortedSequence(arr));
    		}
     
    	public static int longestSortedSequence(int[] arr) {
     
    			int beg=0;
    			int end=0;
     
    			int count=0;
     
    		for(int i=end;i<=arr.length-1;i++){
    			int begTemp=0;
    			int endTemp=0;
    			int tempCount=0;
     
    			for(int j=i+1;j<=arr.length;j++){
     
    			begTemp=arr[end];
     
    				if(arr[end]<=arr[j]){
    					tempCount++;
    					}
     
    				if(arr[end]>arr[j]){
    				endTemp=arr[j-1];
    					}
     
    			}
     
    				if(count<tempCount){
    					count=tempCount;
    					end=endTemp;
    					beg=begTemp;
    				   }
    			}
    				int length=0;
    				for(int k=arr[beg];k<=arr[end];k++){
     
    				length++;
    				}
     
    		return length;
     
    				}
    }
    Last edited by chernorizec; July 13th, 2014 at 05:50 PM. Reason: recommended by mod


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: Index out of bounds exception. Need help.

    it gives me index out of bounds exception.
    Please copy the full text of the error message and paste it here. It has important info about the error.

    Please fix the formatting of the code. The {}s are poorly placed making the code very to read and understand.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Index out of bounds exception. Need help.

    I hope it's better now.

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    Default Re: Index out of bounds exception. Need help.

    I hope it's better now.
    Did you look to see what you had done to it?

    Where is the error message?
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Index out of bounds exception. Need help.

    it's on the top of the post.

  6. #6
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    Default Re: Index out of bounds exception. Need help.

    Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 13
    at domashno.ten.longestSortedSequence(ten.java:37)
    Look at line 37 in the code and see why it was using an index past the end of the array.
    Remember array indexes range in value from 0 to the array length-1;
    If you don't understand my answer, don't ignore it, ask a question.

  7. The Following User Says Thank You to Norm For This Useful Post:

    chernorizec (July 13th, 2014)

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