SnakeMatrix

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _01FillTheMatrix
{
    class _01FillTheMatrix
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Please enter an ineger number - number of rows");

            int n = int.Parse(Console.ReadLine());
            Console.WriteLine("Please enter an ineger number - number of cols");
            int m = int.Parse(Console.ReadLine());
            int[,] mtx = new int[n, m];
            int number = 1;


            for (int i = 0; i < mtx.GetLength(0); i++)
            {
                if (i % 2 == 0)
                {
                    for (int j = 0; j < mtx.GetLength(1); j++)
                     {
                       mtx[i, j] = number;
                       number++;
                    }
                }
                else
                {
                    for (int j = n-1; j >=0; j--)
                    {

                        mtx[i, j] = number;
                        number++;
                    }

                }

            }
            Console.WriteLine("Second matrix");
            for (int i = 0; i < mtx.GetLength(0); i++)
            {
                for (int j = 0; j < mtx.GetLength(1); j++)
                {

                        Console.Write("{0} ", mtx[i, j]);

                }
                Console.WriteLine();
            }

        }
    }
}