public static async Task Run()
{
if (await Load() is not SeatState[,] seats)
{
return;
}
int height = seats.GetLength(0);
int width = seats.GetLength(1);
var updatedSeats = new SeatState[height, width];
bool changed;
do
{
changed = false;
for (int i = 0; i < height; i++)
{
for (int j = 0; j < width; j++)
{
updatedSeats[i, j] =
(
Offsets.Count(off => IsOccupiedAlong(seats, j, i, off.x, off.y)),
seats[i, j]
)
switch
{
(0, SeatState.Empty) => SeatState.Occupied,
(>= 5, SeatState.Occupied) => SeatState.Empty,
(_, SeatState state) => state
};
if (updatedSeats[i, j] != seats[i, j])
{
changed = true;
}
}
}
(seats, updatedSeats) = (updatedSeats, seats);
} while (changed);
Console.WriteLine($"Number of occupied seats: {seats.Flatten().Count(s => s == SeatState.Occupied)}");
}