DiagonalDifference.cs

using System;

/*

    *
   ***
  *****
 *******
*********
 *******
  *****
   ***
    *
*/

/*

    *
   * *
  *   *
 *     *
*       *
 *     *
  *   *
   * *
    *

*/

namespace HackerRank.DiagonalDifference
{
    class Program
    {
        static void Main(string[] args)
        {
            DrawTriangle(5);
        }
        
        private static void DrawTriangle(int n)
        {
            for (int satirNo = 0; satirNo < n; satirNo++)
            {
                for (int j = n - 1 - satirNo; j > 0; j--)
                {
                    Console.Write(" ");
                }

                for (int i = 0; i < 2 * satirNo + 1; i++)
                {
                    Console.Write("*");
                }
                
                Console.WriteLine();
            }
        }
    }
}