using System;

public class Program

{

        public static void Main()

    {

        int num, space;

​

        while (true)

        {

            Console.Write("Enter a number: ");

​

            num = Convert.ToInt32(Console.ReadLine());

​

            space = num - 1;

​

            for (int i = 1; i <= num; i++)

            {

                for (space = 1; space <= (num - i); space++)

                {

                    Console.Write(" ");

                }

​

                for (int j = 1; j <= i; j++)

                {

                    Console.Write(j);

                }

​

                for (int k = (i - 1); k >= 1; k--)

                {

                    Console.Write(k);

                }

​

                Console.WriteLine();

​

            }

        }

​

    }//DE LARA, QUEEN ELLA A.//

}

​