Pascal Tringle, C#

Language: Layout:

//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
            //Your code goes here
            int j;
            for(int i=5; i>=1; i--)
            {
                for(j=1; j<=9; j++)
                {
                    if(j>=i)
                    {             
                        if(j<=((9-i)+1))
                        {
                            if(((9-i)+1) ==j || i==j){
                                Console.Write("1");
                            }
                            else{
                                if(((j-i)%2)==0){
                                    if(j==5){
                                        Console.Write((((9-i)+1)-5)+(((j-i)/2)==1?0:((j-i)/2)));
                                    }else{
                                        Console.Write(((9-i)+1)-5);
                                    }
                                }
                                else{
                                 Console.Write(" ");
                                }
                            }
                        }
                        else
                        {
                             Console.Write(" ");
                        }
                    }
                    else{
                          Console.Write(" ");
                    }
                }

Console.Write("\n");
                  
            }
        }
    }
}

Show compiler warnings [ + ] Show input
Compilation time: 0,14 sec, absolute running time: 0,09 sec, cpu time: 0,09 sec, average memory usage: 14 Mb, average nr of threads: 3