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Thread: Help with ArrayList<Integer>

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    Default Help with ArrayList<Integer>

    Deleted for privacy.
    Last edited by shanklove; September 7th, 2010 at 04:57 PM.

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    Default Re: Help with ArrayList<Integer>

    Have you read about java.util.Set?, take a look then refactor your code.
    Eduardo Yez Parareda
    http://serfj.sourceforge.net - Simple Ever REST Framework for Java
    http://serfj.wordpress.com

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    Default Re: Help with ArrayList<Integer>

    Ok, so what is wrong with this process:

    1. Combine the two ArrayLists using ArrayList.addAll(Collection<? extends E> c)
    2. Go through the new ArrayList and remove all duplicates. This can be done in two ways:
    A) (Standard Way) Embedded For loops where the first For loop goes through the entire ArrayList to get an Object, and the second For loop goes through the ArrayList again seeing if that Object is found in another place in the ArrayList.
    B) (Fun Way) For Loop that goes through entire ArrayList. For each instance, use the AbstractList.lastIndexOf(Object o) method. If the returned index is not equal to current index, remove the object in the returned index and check for the current object in the ArrayList again. Once the returned index is equal to the current index, you know that Object is not repeated in the ArrayList anymore.

  4. The Following 2 Users Say Thank You to aussiemcgr For This Useful Post:

    Json (September 6th, 2010), shanklove (September 7th, 2010)

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