permutation in c#

Question

Is it possible to generate all permutations of a collection in c#?

char[] inputSet = { \'A\',\'B\',\'C\' };
Permutations permutations = new Permu         


        

Answer 1

    public static void Recursion(char[] charList, int loBound, int upBound )
    {
            for (int i = loBound; i <= upBound; i++)
            {

                swap(ref charList[loBound], ref charList[i]);
                if (loBound == upBound)
                {
                    Console.Write(charList);
                    Console.WriteLine("");
                }

                Recursion(charList, loBound + 1, upBound);
                swap(ref charList[loBound], ref charList[i]);
            }

        }



    public static void swap(ref char a, ref char b)
    {
        if (a == b) return;
        a ^= b;
        b ^= a;
        a ^= b;
    }

    public static void Main(string[] args)
    {
        string c = "123";
        char[] c2 = c.ToCharArray();
        Recursion(c2, 0, c2.Length-1);
        Console.ReadKey();
    }