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BestFSSudoku.cpp
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BestFSSudoku.cpp
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#include "Sudoku.h"
#include "BestFirstSearch.h"
#include <vector>
#include <string>
using std::vector;
using std::string;
#include <iostream>
using std::cout;
using std::endl;
bool fillBoard(Sudoku * board, const vector<string> & fillWith) {
for (size_t row = 0; row < fillWith.size(); ++row) {
for (size_t col = 0; col < fillWith.size(); ++col) {
if (fillWith[row][col] != ' ') {
const int setTo = std::stoi(fillWith[row].substr(col,1));
if (!board->setSquare(row, col, setTo)) {
cout << "Error: setSquare returned false after setting square[" << row << "][" << col << "] to " << setTo << " - this should happen as the example boards are solvable\n";
return false;
}
}
}
}
return true;
}
bool checkAnswer(Sudoku * board, const vector<string> & answer) {
for (size_t row = 0; row < answer.size(); ++row) {
for (size_t col = 0; col < answer.size(); ++col) {
const int setTo = std::stoi(answer[row].substr(col,1));
if (board->getSquare(row,col) != setTo) {
cout << "Error: wrong answer in square[" << row << "][" << col << "]: should be " << setTo << " but is " << board->getSquare(row,col) << endl;
return false;
}
}
}
return true;
}
int main() {
{
vector<string> hardBoard{"8 ",
" 36 ",
" 7 9 2 ",
" 5 7 ",
" 457 ",
" 1 3 ",
" 1 68",
" 85 1 ",
" 9 4 "};
vector<string> answer{ "812753649",
"943682175",
"675491283",
"154237896",
"369845721",
"287169534",
"521974368",
"438526917",
"796318452"};
unique_ptr<Sudoku> board(new Sudoku(9));
if (!fillBoard(board.get(), hardBoard)) {
cout << "Failed: When filling the board, setSquare() returned false\n";
return 1;
}
cout << "Trying to solve hard board:\n";
board->write(cout);
BestFirstSearch search(std::move(board));
Searchable * solution = search.solve();
if (solution == nullptr) {
cout << "\nFailed: Couldn't be solved\n";
return 1;
}
Sudoku * solvedBoard = static_cast<Sudoku*>(solution);
if (checkAnswer(solvedBoard, answer)) {
cout << "\nPassed: Solution was:\n";
solvedBoard->write(cout);
cout << "\nNodes expanded: " << search.getNodesExpanded() << std::endl;
return 0;
} else {
cout << "Failed: Solution was returned, but it was the wrong answer\n";
return 1;
}
}
}