Exemple #1
0
        private Grid2 <Octopus> LoadGrid()
        {
            string[]        input = File.ReadAllLines("Day11Input.txt");
            Grid2 <Octopus> grid  = new Grid2 <Octopus>(input[0].Length, input.Length);

            foreach (Point2 point in grid.Points)
            {
                grid[point] = new Octopus(input[point.Y][point.X] - '0');
            }

            return(grid);
        }
Exemple #2
0
        private void TryFlash(Grid2 <Octopus> grid, Point2 point)
        {
            Octopus o = grid[point];

            if (o.Energy > 9 && !o.HasFlashed)
            {
                o.HasFlashed = true;

                foreach (Point2 neighbor in point.Surrounding(grid.Bounds))
                {
                    grid[neighbor].Energy++;
                    TryFlash(grid, neighbor);
                }
            }
        }
Exemple #3
0
        public static void Run()
        {
            var inputs = File.ReadAllLines("Day11Input.txt");

            Octopus[,] grid = new Octopus[10, 10];

            //Setup the grid
            for (int i = 0; i < inputs.Length; i++)
            {
                for (int j = 0; j < inputs.Length; j++)
                {
                    grid[i, j] = new Octopus(inputs[i][j]);
                }
            }

            long flashes = 0;
            int  count   = 0;

            while (true)
            {
                //set the grid
                bool stepComplete = false;
                for (int j = 0; j < 10; j++)
                {
                    for (int k = 0; k < 10; k++)
                    {
                        if (grid[j, k].hasFired)
                        {
                            grid[j, k].energy = 0;
                        }
                        grid[j, k].energy++;
                        grid[j, k].hasFired = false;
                    }
                }

                while (!stepComplete)
                {
                    stepComplete = true;
                    for (int j = 0; j < 10; j++)
                    {
                        for (int k = 0; k < 10; k++)
                        {
                            if (!grid[j, k].hasFired && grid[j, k].energy > 9)
                            {
                                //Octopus hasn't fired and energy above 9 - take cover!
                                flashes     += FireOctopus(j, k, grid);
                                stepComplete = false;
                            }
                        }
                    }
                }
                count++;

                if (count == 100)
                {
                    Console.WriteLine("Part 1 - " + flashes);
                }

                bool inSync = true;
                for (int i = 0; i < inputs.Length; i++)
                {
                    for (int j = 0; j < inputs.Length; j++)
                    {
                        if (!grid[i, j].hasFired)
                        {
                            inSync = false;
                            break;
                        }
                    }
                    if (!inSync)
                    {
                        break;
                    }
                }
                if (inSync)
                {
                    break;
                }
            }
            Console.WriteLine("Part 2 - " + count);
        }