public static int GetTotalNumberOfOccupiedSeats(Day11Model layoutModel,
int fromRowIndex,
int toRowIndex,
int fromColumnIndex,
int toColumnIndex,
Tuple <int, int> ignorePosition = null)
{
var numberOfOccupiedSeats = 0;
for (var rowIndex = fromRowIndex; rowIndex <= toRowIndex; rowIndex++)
{
for (var colIndex = fromColumnIndex; colIndex <= toColumnIndex; colIndex++)
{
var isValidIndex = rowIndex >= 0 && rowIndex < layoutModel.Rows &&
colIndex >= 0 && colIndex < layoutModel.Columns;
if (!isValidIndex || (ignorePosition != null &&
ignorePosition.Item1 == rowIndex &&
ignorePosition.Item2 == colIndex))
{
continue;
}
if (layoutModel.SeatLaoyut[rowIndex, colIndex] == OccupiedSeat)
{
numberOfOccupiedSeats++;
}
}
}
return(numberOfOccupiedSeats);
}
private static int GetNumberOfOccupiedSeatsInOneDirection(Day11Model layoutModel, int rowPosition, int columnPosition, int rowDirection, int columnDirection)
{
if (rowPosition + rowDirection < 0 || rowPosition + rowDirection >= layoutModel.Rows ||
columnPosition + columnDirection < 0 || columnPosition + columnDirection >= layoutModel.Columns)
{
return(0);
}
if (layoutModel.SeatLaoyut[rowPosition + rowDirection, columnPosition + columnDirection] == OccupiedSeat)
{
return(1);
}
else if (layoutModel.SeatLaoyut[rowPosition + rowDirection, columnPosition + columnDirection] == EmptySeat)
{
return(0);
}
else
{
return(GetNumberOfOccupiedSeatsInOneDirection(layoutModel,
rowPosition + rowDirection,
columnPosition + columnDirection,
rowDirection,
columnDirection));
}
}
private static int GetNumberOfNeighborOccupiedSeats(Day11Model layoutModel, int rowPosition, int colPosition)
{
return(GetTotalNumberOfOccupiedSeats(layoutModel,
rowPosition - 1,
rowPosition + 1,
colPosition - 1,
colPosition + 1,
new Tuple <int, int>(rowPosition, colPosition)));
}
public static void PrintLayout(Day11Model currentModel)
{
for (var rowIndex = 0; rowIndex < currentModel.Rows; rowIndex++)
{
for (var colIndex = 0; colIndex < currentModel.Columns; colIndex++)
{
Console.Write(currentModel.SeatLaoyut[rowIndex, colIndex]);
}
Console.WriteLine();
}
}
private static int GetNumberOfOccuppiedSeatsInAllDirections(Day11Model layoutModel, int rowPosition, int colPosition)
{
return(GetNumberOfOccupiedSeatsInOneDirection(layoutModel, rowPosition, colPosition, -1, -1)
+ GetNumberOfOccupiedSeatsInOneDirection(layoutModel, rowPosition, colPosition, -1, 0)
+ GetNumberOfOccupiedSeatsInOneDirection(layoutModel, rowPosition, colPosition, -1, 1)
+ GetNumberOfOccupiedSeatsInOneDirection(layoutModel, rowPosition, colPosition, 0, -1)
+ GetNumberOfOccupiedSeatsInOneDirection(layoutModel, rowPosition, colPosition, 0, 1)
+ GetNumberOfOccupiedSeatsInOneDirection(layoutModel, rowPosition, colPosition, 1, -1)
+ GetNumberOfOccupiedSeatsInOneDirection(layoutModel, rowPosition, colPosition, 1, 0)
+ GetNumberOfOccupiedSeatsInOneDirection(layoutModel, rowPosition, colPosition, 1, 1));
}
public static Tuple <bool, Day11Model> Part2DoRoundAndGetChangedState(Day11Model layoutModel)
{
var stateChanged = false;
var newLayout = new char[layoutModel.Rows, layoutModel.Columns];
for (var rowIndex = 0; rowIndex < layoutModel.Rows; rowIndex++)
{
for (var colIndex = 0; colIndex < layoutModel.Columns; colIndex++)
{
newLayout[rowIndex, colIndex] = layoutModel.SeatLaoyut[rowIndex, colIndex];
if (layoutModel.SeatLaoyut[rowIndex, colIndex] == EmptySeat)
{
var numberOfOccupiedSeats = GetNumberOfOccuppiedSeatsInAllDirections(layoutModel, rowIndex, colIndex);
if (numberOfOccupiedSeats == 0)
{
newLayout[rowIndex, colIndex] = OccupiedSeat;
stateChanged = true;
}
}
else if (layoutModel.SeatLaoyut[rowIndex, colIndex] == OccupiedSeat)
{
var numberOfOccupiedSeats = GetNumberOfOccuppiedSeatsInAllDirections(layoutModel, rowIndex, colIndex);
if (numberOfOccupiedSeats >= 5)
{
newLayout[rowIndex, colIndex] = EmptySeat;
stateChanged = true;
}
}
}
}
var newModel = new Day11Model(newLayout, layoutModel.Rows, layoutModel.Columns);
return(new Tuple <bool, Day11Model>(stateChanged, newModel));
}
