feat: complete day 2

04/CeresSearch/Program.cs

@@ -1,2 +1,30 @@
-// See https://aka.ms/new-console-template for more information
-Console.WriteLine("Hello, World!");
+using System.Diagnostics;
+
+using CeresSearch;
+
+if (args.Length is 0)
+{
+  Console.WriteLine("Please provide a path to the input file.");
+  return;
+}
+
+if (File.Exists(args[0]) is false)
+{
+  Console.WriteLine("The provided file does not exist.");
+  return;
+}
+
+var isPart2 = args.Length is 2 && args[1] is "part2";
+var input = await File.ReadAllLinesAsync(args[0]);
+
+var stopwatch = new Stopwatch();
+stopwatch.Start();
+
+var grid = new Grid(input);
+
+var results = isPart2
+  ? grid.CountXmases()
+  : grid.CountOccurrences("XMAS");
+  
+stopwatch.Stop();
+Console.WriteLine($"The number of occurrences is {results}. ({stopwatch.ElapsedMilliseconds}ms)");