public void Init(SudokuBoard sudokuBoard)
{
int row, column, square, number, n;
_candidates = Utility.ReturnThreeDimensionalDataStructure(9, 9, 10);
_candidatesAfterAddedNumbersWithCertainty = null;
_random = new Random((int)(DateTime.Now.Ticks % 64765L));
_numberOfCandidates = 0;
for (row = 1; row <= 9; row++)
{
for (column = 1; column <= 9; column++)
{
square = 1 + (3 * ((row - 1) / 3)) + ((column - 1) / 3);
if (sudokuBoard.IsSet(row, column))
{
_candidates[row - 1][column - 1][0] = -1; //Indicates that the cell is set already
}
else
{
n = 0;
this._candidates[row - 1][column - 1][0] = 0; //Number of candidates is set in index 0
for (number = 1; number <= 9; number++)
{
if (
(sudokuBoard.ReturnNumberOfOccurenciesOfNumber(number, row, Target.Row) == 0) &&
(sudokuBoard.ReturnNumberOfOccurenciesOfNumber(number, column, Target.Column) == 0) &&
(sudokuBoard.ReturnNumberOfOccurenciesOfNumber(number, square, Target.Square) == 0)
)
{
n++;
_candidates[row - 1][column - 1][0] = n;
_candidates[row - 1][column - 1][n] = number;
_numberOfCandidates++;
}
}
}
}
}
}
public void SetCandidates(SudokuBoard sudokuBoard)
{
int row, column, square, number, n;
_numberOfCandidates = 0;
for (row = 1; row <= 9; row++)
{
for (column = 1; column <= 9; column++)
{
square = 1 + (3 * ((row - 1) / 3)) + ((column - 1) / 3);
if (sudokuBoard.IsSet(row, column))
{
_candidates[row - 1][column - 1][0] = -1; //Indicates that the cell is set already
}
else
{
n = 0;
this._candidates[row - 1][column - 1][0] = 0; //Number of candidates is set in index 0
for (number = 1; number <= 9; number++)
{
if (
(sudokuBoard.ReturnNumberOfOccurenciesOfNumber(number, row, Target.Row) == 0) &&
(sudokuBoard.ReturnNumberOfOccurenciesOfNumber(number, column, Target.Column) == 0) &&
(sudokuBoard.ReturnNumberOfOccurenciesOfNumber(number, square, Target.Square) == 0)
)
{
n++;
_candidates[row - 1][column - 1][0] = n;
_candidates[row - 1][column - 1][n] = number;
_numberOfCandidates++;
}
}
}
}
}
}
