C# array 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}.
// should cover all cases ...
using System;

class Program
{
    static void Main()
    {
        int[] arr =
            //{ 1, 7, 3, 3, 5, 5 }; /*ok if(max != 0 && indexValue[i]!=0)*/
            { 1, 1, 3, 3, 5, 5 };// this check was hard
        //{ 1,2,3,4,5,6 };/*ok if (max == 0 )*/
        //{ 1, 1, 1,1,2, 2, 2, 2, 3, 3, 3,3 };/*ok*/
        //{2, 1, 1, 2, 3, 3, 2, 2, 2, 1} ;

        int[] counterMax = new int[arr.Length];// how many times element met in array
        int counterForArrCount = 0;// count repeated element
        int[] indexValue = new int[arr.Length];// indexator for repeated elements in arr[]
        for (int i = 0; i < arr.Length - 1; i++)// check all elements witout the last one
        {
            if (arr[i] == arr[i + 1])// here we check as well the last one
            {
                counterForArrCount++;
                counterMax[i] = counterForArrCount;//how many time met this element
            }
            else
            {
                counterForArrCount = 0; // back to zero
                counterMax[i] = counterForArrCount;
            }     //no need separate check for last element -
        }
        int max = 0;// find max repeated elm
        for (int i = 0; i < counterMax.Length; i++)
        {
            if (counterMax[i] > max)
            {
                max = counterMax[i];
            }
        }// indexing if max repeated lenght is met more then 1
        for (int i = 0; i < counterMax.Length; i++) // smesto 0->1
        {
            if (counterMax[0] == max)//special check for case: { 1,1,3,3,5,5 };
            {
                indexValue[1] = 1;
            }
            if (counterMax[i] == max)
            {
                indexValue[i] = i;
            }
        }// print out
        for (int i = 0; i < indexValue.Length; i++)
        {   // print just longest
            if (indexValue[i] > 0 && max != 0)
            {// get which walue to print prom original arr[]
                int getValue = indexValue[i];
                Console.Write("{");// just fancy
                for (int j = 0; j <= max; j++)
                {
                    if (j < max)
                    {
                        Console.Write("{0}, ", arr[getValue]);
                    }
                    else if (j == max)
                    {
                        Console.Write("{0}", arr[getValue]);
                    }
                }
                Console.WriteLine("}");// just fancy
            }
            if (max == 0) // special check for case { 1,2,3,4,5,6 }
            {
                int getValue = indexValue[i];
                Console.Write("{");// just fancy
                for (int j = 0; j <= max; j++)
                {
                    if (j < max)
                    {
                        Console.Write("{0}, ", arr[getValue]);
                    }
                    else if (j == max)
                    {
                        Console.WriteLine("{0}", arr[getValue]);
                    }
                }
                Console.WriteLine("}");// just fancy
            }
        }
    }
}