Ad

Find the difference and explain why it is so significant.

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

namespace ForCodeWars
{
    class Program
    {
        static void Main(string[] args)
        {
            const int length = 10000;

            int[,] arrayA = new int[length, length];

            Stopwatch timer = new Stopwatch();
            timer.Start();

            for (int i = 0; i < length; i++)
            {
                for (int j = 0; j < length; j++)
                {
                    arrayA[i, j] = i;
                }
            }

            timer.Stop();
            Console.WriteLine(timer.ElapsedMilliseconds);


            Stopwatch timer2 = new Stopwatch();
            timer2.Start();

            int[,] arrayB = new int[length, length];
            for (int i = 0; i < length; i++)
            {
                for (int j = 0; j < length; j++)
                {
                    arrayB[j, i] = i;
                }
            }

            timer2.Stop();
            Console.WriteLine(timer2.ElapsedMilliseconds);

            Console.ReadKey();


        }
    }
}