how to count contiguous and common zeros in various arrays
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  1. #1
    Join Date
    May 2014
    Posts
    1

    how to count contiguous and common zeros in various arrays

    Hi Friends!

    If I have number of arrays(its 3 for instance and may vary) with fixed size (15), it consist of zeros and non-zeros

    How to write a program to count the common zero sequences and there indexes of arrays?

    eg:array1[15]={5,5,0,0,4,4,4,0,0,0,1,0,0,0,3}

    array2[15]={1,0,0,0,0,7,7,0,0,3,0,0,0,0,2}

    array3[15]={6,6,6,0,8,8,8,0,0,0,3,3,0,0,4}

    ...........


    sample output for the above arrays:

    Index==> Nim_of_zeros

    3==> 1

    7==> 2

    12==> 2

  2. #2
    Join Date
    Aug 2013
    Posts
    55

    Re: how to count contiguous and common zeros in various arrays

    Quote Originally Posted by shel88 View Post
    How to write a program to count the common zero sequences and there indexes of arrays?
    You can start by writing a program that can do that for one array. When that works you expand the program to handle several arrays.

    If you can check whether a position is zero in one array it's not hard to check whether that position is zero in all of several arrays.

  3. #3
    Join Date
    Jul 2002
    Posts
    2,512

    Re: how to count contiguous and common zeros in various arrays

    Create summary array which contains sum of total values of input arrays in every position. Count contiguous zeros in it. Algorithm for one array is trivial.
    The point here is that summary array has 0 in position i, only of all input arrays have 0 in this position.
    Last edited by Alex F; May 12th, 2014 at 03:55 AM.

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