int main(void) {
readAndVerify();
//addTextToLocation();
return EXIT_SUCCESS;
}
int main()
{
std::list<Puzzle> solutions;
static std::stack<Puzzle> alternatives;
char inputString[81];
std::string inputPuzzle = readAndVerify(inputString);
Puzzle puzzle(inputPuzzle);
puzzle.generatePossibleValues();
alternatives.push(puzzle);
while (!alternatives.empty())
{
puzzle = alternatives.top();
alternatives.pop();
//decide all immediately decideable cells
puzzle.decideCells();
//try simplification strats
bool simplificationFound = true;
while (!puzzle.solved() && simplificationFound)
{
simplificationFound = false;
do
{
simplificationFound = hiddenSingles(puzzle);
}
while (simplificationFound == true);
//fall back to guessing
if (!simplificationFound)
{
Puzzle alternative;
alternative = *clone(puzzle);
if ((simplificationFound = guess(puzzle, alternative)))
{
//record alternative if guess is wrong
alternatives.push(alternative);
}
}
//decide all immediately decidable cells before looking for further simplifications
if (simplificationFound)
{
puzzle.decideCells();
}
}
//if solution is found or contradiction is found(no simplifications)
if (puzzle.solved())
{
solutions.push_back(puzzle);
}
}
if (solutions.empty())
{
std::cout << "No solutions.\n";
}
if (!solutions. empty())
{
while (!solutions.empty())
{
solutions.front().printPuzzle();
solutions.pop_front();
}
}
std::exit(0);
}//end main