public static bool ValidateCol(int?[,] grid, int col, bool allowNull = false, bool ignoreBlock = false, int?allowedRow = null)
{
Log.Add("Validating Col " + col, Importance.NotImportant);
NumberTracker tracker = new NumberTracker();
for (int i = 0; i < Sudoku.Cols; i++)
{
if (ignoreBlock)
{
int blockStart = (int)(col / 3) * 3;
int blockEnd = blockStart + 3;
if (i != allowedRow && i < blockEnd && i > blockStart)
{
continue;
}
}
if (allowNull)
{
if (grid[col, i] == null)
{
continue;
}
}
tracker.addValue(grid[col, i], i);
if (!tracker.IsValid)
{
return(false);
}
}
return(true);
}
public static bool ValidateGroup(int?[,] grid, int row, int col, bool allowNull = false)
{
Log.Add("Validating Group " + row + ":" + col, Importance.NotImportant);
int groupStartX, groupStartY = 0;
groupStartX = (row / 3) * 3;
groupStartY = (col / 3) * 3;
NumberTracker tracker = new NumberTracker();
for (int i = groupStartX; i < groupStartX + 3; i++)
{
for (int j = groupStartY; j < groupStartY + 3; j++)
{
if (allowNull)
{
if (grid[i, j] == null)
{
continue;
}
}
int index = (i * 3) + j;
tracker.addValue(grid[i, j], index);
if (!tracker.IsValid)
{
return(false);
}
}
}
return(true);
}