Thread: Permutation algorithms...

  1. #1
    Registered User
    Join Date
    Nov 2006
    Coimbra, Portugal

    Permutation algorithms...

    Greetings, everyone. I'm sure all of you know that we can obtain permutations of something using C++ STL's next_permutation() function. However...

    There are cases in which we do need to obtain all permutations, but not necessarily in lexicographical order. So I thought: "If that's the case, then the next_permutation() function does more work than I really need it to".

    So here's the question I have to ask everyone: what is the most efficient non-lexicographical permutation algorithm?
    Last edited by Mr_Miguel; 07-20-2007 at 10:32 AM.
    Name: Miguel Martins
    Date of birth: 14th August 1987

    "He who hesitates is lost."

  2. #2
    Registered User
    Join Date
    Sep 2001
    This covers the subject pretty well,
    Callou collei we'll code the way
    Of prime numbers and pings!

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