public string CheckInputToGetAnswerPart2()
{
var allAvailableSeatIds = Enumerable.Range(0, 128).SelectMany(r => Enumerable.Range(0, 8).Select(c => BoardingPassReader.GetSeatId(r, c)));
var potentialSeats = allAvailableSeatIds.Where(s => !SeatIds.Contains(s)).ToList();
foreach (var potentialSeat in potentialSeats.Where(potentialSeat => SeatIds.Contains(potentialSeat - 1) && SeatIds.Contains(potentialSeat + 1)))
{
return(potentialSeat.ToString());
}
throw new Exception("Seat not found.");
}
public string CheckInputToGetAnswerPart1()
{
return(SeatIds.Max().ToString());
}
