static void Main(string[] args)
{
var input = FileParser.ParseDataFileByLine("./day11_input.txt",
line => line.ToArray()).ToArray();
var stopWatch = new Stopwatch();
stopWatch.Start();
var automata = new SeatAutomata(input);
automata.MutateUntilChanged();
var answer = automata.CountOccupiedSeats();
stopWatch.Stop();
Console.WriteLine($"Solution: {answer}");
Console.WriteLine($"Took {stopWatch.ElapsedMilliseconds}ms");
}
public static int ExecutePasswordPolicy()
{
var regex = new Regex("(?<lower>\\d+)-(?<upper>\\d+) (?<letter>\\w): (?<password>\\w+)");
var validCount = FileParser.ParseDataFileByLine("./day2_input.txt", line => regex.Match(line))
.Count(match =>
{
var lower = MatchExtensions.GetGroupValue(match, "lower", int.Parse);
var upper = MatchExtensions.GetGroupValue(match, "upper", int.Parse);
var letter = MatchExtensions.GetGroupValue(match, "letter");
var password = MatchExtensions.GetGroupValue(match, "password");
var first = password.Substring(lower - 1, 1);
var second = password.Substring(upper - 1, 1);
if ((first == letter || second == letter) && first != second)
{
return(true);
}
return(false);
});
return(validCount);
}