using System;

public class Program

{

    public static void Main()

    {

        const int count = 1_000_000;

var array = new bool[count];

var random = new Random();

​

for (var i = 0; i < count; i++) 

    array[i] = random.Next() % 2 == 0;

​

var results = new int[100];

var currentLine = 1;

​

for (var i = 1; i < count; i++)

{

    if (array[i] == array[i - 1])

        currentLine++;

    else

    {

        results[currentLine]++;

        currentLine = 1;

    }

}

​

results[currentLine]++;

​

for (var i = 1; i < 100; i++)

    if (results[i] != 0)

        Console.WriteLine($"{i} --- {results[i]}");

    }

}