Bomberman IZZI

using System;
using System.Diagnostics;
using System.Linq;

namespace HackerRankProjects
{
	class Program
	{
		static void Main(string[] args)
		{
			string[] inputStringArray = new string[6];
			inputStringArray[0] = ".......";
			inputStringArray[1] = "...O...";
			inputStringArray[2] = "....O..";
			inputStringArray[3] = ".......";
			inputStringArray[4] = "OO.....";
			inputStringArray[5] = "OO.....";
			string[] test = bomberMan(3, inputStringArray);
			Console.ReadKey();
		}

		const char BOMB = 'O';
		const string CLEAN = ".";

		// Complete the bomberMan function below.
		static string[] bomberMan(int n, string[] grid)
		{
			var stopTimer = Stopwatch.StartNew();

			var columnSize = grid[0].Length;
			bool explodeTime = false;

			string[] checkpoint = new string[grid.Length];
			string[] gridOriginal = new string[grid.Length];
			grid.CopyTo(gridOriginal, 0);
			grid.CopyTo(checkpoint, 0);

			if (n % 2 == 0)
			{
				PlantAll(grid, columnSize);
				return grid;
			}

			int numberCycles = 0;
			n = n % 32;

			for (int secs = 2; secs <= n; secs++)
			{
				if (explodeTime)
				{
					for (int line = 0; line < grid.Length; line++)
					{
						for (int column = 0; column < columnSize; column++)
						{
							var itsGonnaExplode = checkpoint[line][column] == BOMB;
							if (itsGonnaExplode)
								ExplodeArea(grid, line, column, columnSize, checkpoint);
						}
					}

					grid.CopyTo(checkpoint, 0);
				}
				else
				{
					PlantAll(grid, columnSize);
				}

				numberCycles++;
				if (Enumerable.SequenceEqual(gridOriginal, grid))
				{
					n = n % numberCycles;
					secs = 2;
				}

				explodeTime = !explodeTime;
			}

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

			return grid;
		}

		private static void ExplodeArea(string[] grid, int line, int column, int columnSize, string[] checkpoint)
		{
			grid[line] = grid[line].Remove(column, 1).Insert(column, CLEAN);

			//Has plant for both sides.
			if (column > 0 && column < columnSize - 1)
			{
				if (checkpoint[line][column - 1] != BOMB)
					grid[line] = grid[line].Remove(column - 1, 1).Insert(column - 1, CLEAN);

				if (checkpoint[line][column + 1] != BOMB)
					grid[line] = grid[line].Remove(column + 1, 1).Insert(column + 1, CLEAN);
			}
			else if (column > 0)
			{
				if (checkpoint[line][column - 1] != BOMB)
					grid[line] = grid[line].Remove(column - 1, 1).Insert(column - 1, CLEAN);
			}
			else if (column < columnSize - 1)
			{
				if (checkpoint[line][column + 1] != BOMB)
					grid[line] = grid[line].Remove(column + 1, 1).Insert(column + 1, CLEAN);
			}

			//Has plant for up and down
			if (line > 0 && line < grid.Length - 1)
			{
				if (checkpoint[line - 1][column] != BOMB)
					grid[line - 1] = grid[line - 1].Remove(column, 1).Insert(column, CLEAN);

				if (checkpoint[line + 1][column] != BOMB)
					grid[line + 1] = grid[line + 1].Remove(column, 1).Insert(column, CLEAN);
			}
			else if (line > 0)
			{
				if (checkpoint[line - 1][column] != BOMB)
					grid[line - 1] = grid[line - 1].Remove(column, 1).Insert(column, CLEAN);
			}
			else if (line < grid.Length - 1)
			{
				if (checkpoint[line + 1][column] != BOMB)
					grid[line + 1] = grid[line + 1].Remove(column, 1).Insert(column, CLEAN);
			}
		}

		private static void PlantAll(string[] grid, int lenght)
		{
			for (int i = 0; i < grid.Length; i++)
				grid[i] = new string('O', lenght);
		}
	}
}