Задача 4

//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;

class Program
{
    static void Main(string[] args)
    {
        //We enter the size of the array
        Console.WriteLine("Enter the size of the array:");
        int size = int.Parse(Console.ReadLine());
        int[] arr = new int[size];

        //We are entering the value of each element of the array

        for (int i = 0; i < arr.Length; i++)
        {

            Console.Write("arr[{0}] = ", i);
            arr[i] = int.Parse(Console.ReadLine());


        }


        //We are copying the array in a new array 1 position bigger

        int[] arrCopy = new int[size + 1];

        for (int i = 0; i < arr.Length; i++)
        {

            arrCopy[i] = arr[i];


        }

        arrCopy[size] = 20;  // This means nothing because I wouldn't go to the last value




        int f = 0;
        bool areEqual = true;
        int sequence = 0;
        int maxSequence = 0;
        int firstElemSequence = 0;
        do
        {
            sequence = 0;
            do
            {
                areEqual = arrCopy[f] == arrCopy[f + 1];
                f++;
                sequence++;

            } while (areEqual && f < arrCopy.Length - 1);

            if (sequence > maxSequence)
            {
                maxSequence = sequence;
                firstElemSequence = f - (maxSequence);
            }

        } while (f < arrCopy.Length - 1);

        //Console.WriteLine("maxSequence = {0}", maxSequence);
        //Console.WriteLine("firstElemSequence = {0}", firstElemSequence);

        //Console.WriteLine("The maximal sequence of equal elements in the array :");
        for (int k = 0; k < arrCopy.Length - 1; k++)
        {

            Console.Write("{0}", arrCopy[k]);
            if (k != arrCopy.Length - 2)
            {
                Console.Write(", ");
            }





        }

        Console.Write("      ---->       ");


        for (int j = firstElemSequence; j < maxSequence + firstElemSequence; j++)
        {


            Console.Write("{0}", arrCopy[j]);
            if (j != maxSequence + firstElemSequence - 1)
            {
                Console.Write(", ");
            }

        }

        Console.WriteLine();


    }
}