C# Part II Arrays Exercise 4

//Write a program that finds the maximal sequence of equal elements in an array.
//Example: {2, 1, 1, 2, 3, 3, 2, 2, 2, 1} -> {2, 2, 2}.

using System;
using System.Collections.Generic;

class MaximalSequence
{
    static void Main()
    {
        uint arrayLength;
        int currentLength = 1;
        int maxLength = 0;
        List<int> elements = new List<int>();

        Console.Write("Enter the array's length: ");

        while (!uint.TryParse(Console.ReadLine(), out arrayLength) || arrayLength == 0)
        {
            Console.Write("Invalid input. Enter a positive integer number: ");
        }

        int[] array = new int[arrayLength];

        for (int i = 0; i < arrayLength; i++)
        {
            Console.Write("Enter the {0} element of the  array: ", i);

            while (!int.TryParse(Console.ReadLine(), out array[i]))
            {
                Console.Write("Invalid input. Enter an integer number: ");
            }
        }

        int pointer = array[0];

        for (int i = 1; i < arrayLength; i++)
        {
            if (pointer == array[i])
            {
                currentLength++;
            }
            else
            {
                pointer = array[i];

                if (maxLength < currentLength)
                {
                    maxLength = currentLength;
                    elements.Clear();
                    elements.Add(array[i - 1]);
                }
                else if (maxLength == currentLength)
                {
                    elements.Add(array[i - 1]);
                }
                currentLength = 1;
            }
        }

        if (maxLength < currentLength)
        {
            maxLength = currentLength;
            elements.Clear();
            elements.Add(array[arrayLength - 1]);
        }
        else if (maxLength == currentLength)
        {
            elements.Add(array[arrayLength - 1]);
        }

        if (elements.Count == 1)
        {
            Console.Write("There is one sequence with maximal length: ");
        }
        else
        {
            Console.WriteLine("There are {0} sequences with maximal length: ", elements.Count);
        }

        foreach (var element in elements)
        {
            int[] maxSequence = new int[maxLength];

            for (int i = 0; i < maxLength; i++)
            {
                maxSequence[i] = element;
            }

            Console.WriteLine(string.Join(", ", maxSequence));
        }
    }
}