using System;

public class DiamondPattern

    {

        public static void Main()

        {

           int n=5;

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

                {

                      for (int j = 0; j < (n - i); j++)

                            Console.Write(" ");

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

                            Console.Write("*");

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

                            Console.Write("*");

                      Console.WriteLine();

                }

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

                {

                      for (int j = 0; j < (n - i); j++)

                            Console.Write(" ");

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

                            Console.Write("*");

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

                            Console.Write("*");

                      Console.WriteLine();

                }

                Console.WriteLine();

        }

    }