04. Printing Triangle

using System;

namespace _04._Printing_Triangle
{
    class Program
    {
        static void Main(string[] args)
        {
            int endNumber = int.Parse(Console.ReadLine());
            Row(endNumber);
        }
        static void Row (int endNumber)
        {
            for (int i=1; i<=endNumber; i++)
            {
                Line(i);
            }

            for (int i = endNumber-1; i >= 1; i--)
            {
                Line(i);
            }
        }
        static void Line(int i)
        {
            for(int j = 1; j <= i; j++)
                {
                Console.Write($"{j} ");
            }
            Console.WriteLine();
        }
    }
}