private bool IsValidWholeGrid(int[] grid)
{
var rows = _sectionCutter.GetAllRows(grid);
var columns = _sectionCutter.GetAllColumns(grid);
var squares = _sectionCutter.GetAllSquares(grid);
return(ContainsNoDuplicates(squares) &&
ContainsNoDuplicates(rows) &&
ContainsNoDuplicates(columns));
}
private int[][] GetPossibleNumbersInGrid(int[] gridIntArray)
{
var possibilities = new int[81][];
int indexInGrid = 0;
var rawRows = _sectionCutter.GetAllRows(gridIntArray);
var allRows = rawRows.ToJaggedArray();
var allColumns = _sectionCutter.GetAllColumns(gridIntArray).ToJaggedArray();
var allSquares = _sectionCutter.GetAllSquares(gridIntArray).ToJaggedArray();
for (int i = 0; i < 81; i++)
{
var number = gridIntArray[i];
if (number == 0)
{
var possibleNumbers = Helper.ZeroToNineArray.AsEnumerable();
var position = _positionCalculator.GetPosition(indexInGrid);
var currentRow = allRows[position[0]];
var currentColumn = allColumns[position[1]];
var currentSquare = allSquares[position[2]];
var itemsToRemove = currentRow.Union(currentColumn).Union(currentSquare);
possibleNumbers = possibleNumbers.Except(itemsToRemove);
possibilities[i] = possibleNumbers.ToArray();
}
else
{
possibilities[i] = new int[1] {
gridIntArray[indexInGrid]
};
}
++indexInGrid;
}
return(possibilities);
}
