using System;

using System.Collections.Generic;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        var source = new[] { 1, 1, 4, 6, 3, 3, 1, 2, 2, 2, 6, 6, 6, 7 };

​

        IEnumerable<IGrouping<int, int>> grouped = MoreLinq.MoreEnumerable

            .GroupAdjacent(source, x => x);

        foreach (var group in grouped)

        {

            Console.WriteLine($"Key: {group.Key}, Elements: {String.Join(", ", group)}");

        }

        Console.WriteLine();

​

        IEnumerable<KeyValuePair<int, int>> pairs = MoreLinq.MoreEnumerable

            .RunLengthEncode(source);

        foreach (var pair in pairs)

        {

            Console.WriteLine($"Key: {pair.Key}, Value: {pair.Value}");

        }

    }

}

​