Ars Technica

Recursion and Permutations of a string?

- 1) to different permutations. A recursive approach (which is what I would use) would involve breaking the problem into isomorphic subproblems: to find all permutations of a string, find all ...
Visual Studio Magazine

Improved Permutations with the BigInteger Data Type: Listing 1

using System; using System.Numerics; namespace ImprovedPermutations { class PermutationsProgram { static void Main(string[] args) { Console.WriteLine("\nBegin improved permutations with BigInteger ...