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Thread: Arrays: question about "removing" items.

  1. #1
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    Default Arrays: question about "removing" items.

    hello.. guys
    i am trying to figure out how to remove "some" x from array..

    i had this so far..

    but still i get errors :S with..

    				array[i]=arr[i];

    Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 5
    	at Even.remove(Even.java:150)
    	at Even.main(Even.java:127)

    	public static int[] remove(int[] arr,int x) {
     
    		int count=0;
     
    		for (int i=0;i<arr.length;i++)
    			if (arr[i] == x)
    				count++;
     
    		int[] array = new int[arr.length-count];
     
    		for (int i=0;i<arr.length;i++)
    			if (arr[i] != x)
    				array[i]=arr[i];
     
    		return array;
     
     
    	}


  2. #2
    Super Moderator helloworld922's Avatar
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    Default Re: Arrays: question about "removing" items.

    You're copying over values into the same indices between the two arrays, leaving blank spots in array.

    count = 0;
    for (int i = 0; i < arr.length; i++)
    {
         if (arr[i]!=x)
         {
              array[count] = arr[i];
              count++;
         }
    }

  3. #3
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    Default Re: Arrays: question about "removing" items.

    good.. i forgot that
    thanks alot

    	public static int[] remove(int[] arr,int x) {
     
    		int count=0,k=0;
     
    		for (int i=0;i<arr.length;i++)
    			if (arr[i] == x)
    				count++;
     
    		int[] array = new int[arr.length-count];
     
    		for (int i=0;i<arr.length;i++)
    			if (arr[i] != x)
    			{
    				array[k]=arr[i];
    				k++;
    			}
     
    		return array;
     
     
    	}

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