Subset problem

This is a discussion on Subset problem within the C Programming forums, part of the General Programming Boards category; Hi. I need a c/c++ code, which generates the subsets of a given set. i could not find anywhere on ...

  1. #1
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    Subset problem

    Hi. I need a c/c++ code, which generates the subsets of a given set. i could not find anywhere on the internet. If you help me, i will be glad.

    i have an array which is wArray[] that has length 5 for example.

    wArray = {1,2,3,4,5}

    this array is the weight array (it contains the weights of some items), so the subsets of it will be:

    Code:
    sArray = {1,2,3,4,5,(1+2),(1+3),(1+4)....,(1+2+4),....(1+2+3+4+5)}
    how can i generate subsets of this set and assign it to a different array?

    Thank you...

  2. #2
    Frequently Quite Prolix dwks's Avatar
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    A for loop?
    dwk

    Seek and ye shall find. quaere et invenies.

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  3. #3
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    i thought that it will be by recursion and also i could not do it by recursion.
    how can i do it by a for loop?

  4. #4
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    http://www2.toki.or.id/book/AlgDesig...eratingsubsets

    From that source it should be simple to devise an appropriate algorithm.

    I have the code.

    But the if this is homework, then I won't be posting.



    He he...

    Code:
    Enter n: 5
    Generating subsets...
      1
      1  2
      1  2  3
      1  2  3  4
      1  2  3  4  5
      1  2  3  5
      1  2  4
      1  2  4  5
      1  2  5
      1  3
      1  3  4
      1  3  4  5
      1  3  5
      1  4
      1  4  5
      1  5
      2
      2  3
      2  3  4
      2  3  4  5
      2  3  5
      2  4
      2  4  5
      2  5
      3
      3  4
      3  4  5
      3  5
      4
      4  5
      5
    Last edited by treenef; 12-06-2005 at 02:29 AM.

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