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Thread: time complexity qustion

  1. #1
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    Default time complexity qustion

    what method f do: method "f" fill emptyArr with numbers of arr1 that the method "f" don't find in arr2 and return the biggest number in arr1 that the method "f" canot
    find in arr2.
    given information - arr1.length == arr2.length, arr1 and arr2 full with whole positive numbers.

    qustion is : how to improve the time complexity of this method ???
    public int f(int[]arr1, int[]arr2, int[] emptyArr)
    {
    int length = a.length;
    int k = 0, g = 0, index = 0;
     
    for(int i=0; i < length; i++)
    {
    for(int j=0; j < length; j++)
    if(arr2[j] == arr1[i])
    break;
     
    if(j == length)
    {
    emptyArr
     
    = arr1[i];
    if(g == 0 || emptyArr
    > k) // find the max of arr1 that you don't have in arr2
    {
    k = emptyArr
    ; // max of arr1 that you don't have in arr2
    g = 1;
    }
    index++;
     
    }
     
    }
    return k; // max of arr1 that you don't have in arr2 .
    }
     
    }
    Last edited by helloworld922; September 19th, 2012 at 11:59 AM. Reason: please use [code] tags


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: time complexity qustion

    Please Edit your post and wrap your code with
    [code=java]
    <YOUR CODE HERE>
    [/code]
    to get highlighting and preserve formatting.

    Also posted at:
    http://www.java-forums.org/advanced-...-question.html
    Last edited by Norm; September 18th, 2012 at 07:56 PM.
    If you don't understand my answer, don't ignore it, ask a question.

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