LEVEL SudokuSolverWrapper::getGameLevel(const string game) {
SudokuSolverEngine sudokuSolver(game, false);
if (sudokuSolver.checkIfHasSolution()) {
sudokuSolver.Solve();
return sudokuSolver.getLevel();
}
return INVALID;
}
vector<int> SudokuSolverWrapper::solveGame(const string game) {
SudokuSolverEngine sudokuSolver(game, false);
if (sudokuSolver.checkIfHasSolution()) {
sudokuSolver.Solve();
return sudokuSolver.getSolution();
}
else
return vector<int>(0);
}
// Backtracking algorithm
bool sudokuSolver(vector<vector<char> > &board)
{
for (int i = 0; i < 9; ++ i)
{
for (int j = 0; j < 9; ++ j)
{
if (board[i][j] == '.') {
for (int k = 0; k < 9; ++ k)
{
board[i][j] = k + '1';
if (isValidSudoku(board, i, j) && sudokuSolver(board))
return true;
board[i][j] = '.';
}
return false;
}
}
}
return true;
}
void solveSudoku(vector<vector<char> > &board)
{
sudokuSolver(board);
}