Wait, you want to use factorials or you want to use recursion? A factorial-based approach would involve mapping 0.. (n! - 1) to different permutations. A recursive approach (which is what I would use) ...
The major challenge when working with permutations is that the factorial function gets very, very large very, very quickly. The BigInteger data type was introduced in the .NET Framework 4.0; it ...
Get ready to use the BigInteger data type as Dr. James McCaffrey of Microsoft Research demonstrates zero-based mathematical permutations with C#. A zero-based mathematical permutation of order n is a ...
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