//Laragan, Julianne Gayle

//Tatco, Jethro

//CCP-1103-ITAC

//PascalsTriangle

using System;

​

public class Program

{

    public static void Main()

    {

        string input;

        int inputNum;

        int ctr = 0;

        Console.Write("Input the number of elements to be stored in the array: ");

        input = Console.ReadLine();

        Console.WriteLine();

        int[] array1 = new int[1];

        if (Int32.TryParse(input, out inputNum) == true)

        {

            int[] array = new int[inputNum];

            array1 = new int[inputNum];

            ctr = inputNum;

            for (int i = 0; i < inputNum; i++)

            {

                Console.Write("element - [{0}] : ", i + 1);

                array[i] = Convert.ToInt32(Console.ReadLine());

                for (int j = 0; j < inputNum; j++)

                {

                    if (i != j)

                    {

                        if (array[i] == array[j])

                        {

                            array1[j] = array[j];

                        }

                    }

                }

            }

            Console.WriteLine();

            Console.Write("Total number of duplicate elements found in array is: ");

            for (int k = 0; k < ctr; k++) {

                if (array1[k] != 0) {

                    Console.Write(array[k] + " ");

                }

            }

        }

        else

        {

            Console.WriteLine("Letters are not allowed.");

        }

    }

}