PermutationItem Property

public int this[
	int index
] { get; }

using System;
using System.Linq;
using Kaos.Combinatorics;

namespace ExampleApp
{
    class PnExample05
    {
        static void Main()
        {
            // Create a k-permutation:
            var pn = new Permutation (choices:8, picks:4, rank:601);
            Console.WriteLine ($"n={pn.Choices}, k={pn.Picks}, rank={pn.Rank}:\n");

            // Access elements using the default enumerator:
            var text = String.Concat (pn.Select (ei => (char) ('A' + ei)));
            Console.WriteLine ($"{text}\n");

            // Access elements using the indexer:
            for (int i = 0; i < pn.Picks; ++i)
                Console.WriteLine ($"Element at {i} is {pn[i]}");
        }

        /* Output:

        n=8, k=4, rank=601:

        CHAD

        Element at 0 is 2
        Element at 1 is 7
        Element at 2 is 0
        Element at 3 is 3

        */
    }
}