DataGrids

System.Drawing var instructions = File.ReadAllLines(Path.Combine(Path.GetDirectoryName (Util.CurrentQueryPath),"..","day6.txt")); var grid = new Boolean[1000, 1000]; var intensity = new int[1000, 1000]; foreach (var i in instructions) { var coords = Regex.Match(i, @"(\d+),(\d+)"); var tl = new Point(int.Parse(coords.Groups[1].Value), int.Parse(coords.Groups[2].Value)); coords = coords.NextMatch(); var br = new Point(int.Parse(coords.Groups[1].Value), int.Parse(coords.Groups[2].Value)); for (var x = tl.X; x <= br.X; x++) { for (var y = tl.Y; y <= br.Y; y++) { if (i.Contains("toggle")) { grid[x, y] = !grid[x, y]; intensity[x, y] += 2; } else { var val = i.Contains("on"); grid[x, y] = val; if (val) intensity[x ,y]++; else if (intensity[x, y] > 0) intensity[x, y]--; } } } } int counter = 0; int brightness = 0; for (var x = 0; x < 1000; x++) { for (var y = 0; y < 1000; y++) { brightness += intensity[x, y]; if (grid[x,y]) counter++; } } counter.Dump(); brightness.Dump();