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merge into: Ryuk:udp
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Ryuk:v1.0

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1246331125 moi
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6 changed files with 1250 additions and 36 deletions
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4
app/src/main/java/gui/widget/SudokuSelector.java
View File

@@ -15,6 +15,7 @@ import sudoku.constraint.IConstraint;
import sudoku.structure.Difficulty; import sudoku.structure.Difficulty;
import sudoku.structure.MultiDoku; import sudoku.structure.MultiDoku;
import sudoku.structure.SudokuFactory; import sudoku.structure.SudokuFactory;
import sudoku.structure.SudokuFiller;
public class SudokuSelector { public class SudokuSelector {
@@ -86,7 +87,8 @@ public class SudokuSelector {
this.genThread = new Thread(() -> { this.genThread = new Thread(() -> {
try { try {
if (!empty) { if (!empty) {
SudokuFactory.fillDoku(doku, Difficulty.values()[difficulty.get()]); SudokuFiller.fillDoku(doku, Difficulty.values()[difficulty.get()]);
// SudokuFactory.fillDoku(doku, Difficulty.values()[difficulty.get()]);
} }
this.onSelect.emit(this.doku); this.onSelect.emit(this.doku);
} catch (Exception e) { } catch (Exception e) {

65
app/src/main/java/sudoku/solver/MixedSolver.java
View File

@@ -1,5 +1,6 @@
package sudoku.solver; package sudoku.solver;
import java.util.ArrayList;
import java.util.List; import java.util.List;
import java.util.concurrent.CancellationException; import java.util.concurrent.CancellationException;
@@ -8,18 +9,28 @@ import sudoku.structure.MultiDoku;
public class MixedSolver implements Solver { public class MixedSolver implements Solver {
private Cell findCellToBacktrack(MultiDoku doku, int maxPossibilities) { private List<Cell> findCellToBacktrack(MultiDoku doku, int maxPossibilities) {
int symbolCount = doku.getSubGrid(0).getSize();
if (maxPossibilities > symbolCount)
return null;
List<Cell> backtrackCells = new ArrayList<>();
for (Cell cell : doku.getCells()) { for (Cell cell : doku.getCells()) {
if (!cell.isMutable() || !cell.isEmpty()) if (!cell.isMutable() || !cell.isEmpty())
continue; continue;
List<Integer> possibleSymbols = cell.getPossibleSymbols(); List<Integer> possibleSymbols = cell.getPossibleSymbols();
if (possibleSymbols.size() == maxPossibilities) { if (possibleSymbols.size() == maxPossibilities) {
return cell; backtrackCells.add(cell);
}
} }
// grille non résolvable
if (possibleSymbols.size() == 0)
return null; return null;
} }
return backtrackCells;
}
/** /**
* Résout le MultiDoku passé en paramètre, avec règles de déduction et * Résout le MultiDoku passé en paramètre, avec règles de déduction et
@@ -34,8 +45,12 @@ public class MixedSolver implements Solver {
throw new CancellationException("User wants to stop the solver"); throw new CancellationException("User wants to stop the solver");
} }
while (!doku.isSolved()) { if (doku.isSolved())
boolean filledCell = false; return true;
int symbolCount = doku.getSubGrid(0).getSize();
// on remplit les cases par déduction
for (Cell cell : doku.getCells()) { for (Cell cell : doku.getCells()) {
if (!cell.isMutable() || !cell.isEmpty()) if (!cell.isMutable() || !cell.isEmpty())
continue; continue;
@@ -44,31 +59,41 @@ public class MixedSolver implements Solver {
if (possibleSymbols.size() == 1) { if (possibleSymbols.size() == 1) {
cell.setSymbolIndex(possibleSymbols.getFirst()); cell.setSymbolIndex(possibleSymbols.getFirst());
addStep(cell, steps); addStep(cell, steps);
filledCell = true; if (solve(doku, steps))
return true;
cell.setSymbolIndex(Cell.NOSYMBOL);
return false;
} }
} }
// on ne peut plus remplir de cases, on tente de backtrack // on ne peut plus remplir de cases, on tente de backtrack
if (!filledCell) { for (int maxPossibilities = 2; maxPossibilities <= symbolCount; maxPossibilities++) {
int maxPossibilities = 2; List<Cell> backtrackCells = new ArrayList<>();
Cell backtrackCell = null; while (backtrackCells.isEmpty()) {
while (backtrackCell == null) { backtrackCells = findCellToBacktrack(doku, maxPossibilities);
backtrackCell = findCellToBacktrack(doku, maxPossibilities); // grille non résolvable
if (backtrackCells == null) {
return false;
}
maxPossibilities++; maxPossibilities++;
} }
// on fait du backtracking // on fait du backtracking
for (Cell backtrackCell : backtrackCells) {
List<Integer> possibilities = backtrackCell.getPossibleSymbols(); List<Integer> possibilities = backtrackCell.getPossibleSymbols();
// System.out.println("Backtraing on " + backtrackCell);
// on tente de placer chacun des symboles
for (int symbol : possibilities) { for (int symbol : possibilities) {
doku.getStateManager().pushState();
backtrackCell.setSymbolIndex(symbol); backtrackCell.setSymbolIndex(symbol);
if (solve(doku, steps)) if (solve(doku, steps)) {
return true;
doku.getStateManager().popState();
}
}
}
return true; return true;
} }
}
backtrackCell.setSymbolIndex(Cell.NOSYMBOL);
}
}
return doku.isSolved();
}
} }

6
app/src/main/java/sudoku/structure/StateManager.java
View File

@@ -25,6 +25,10 @@ public class StateManager {
this.doku = doku; this.doku = doku;
} }
public void forgetState() {
states.pop();
}
public Map<Cell, Integer> pushState() { public Map<Cell, Integer> pushState() {
states.add(saveState()); states.add(saveState());
return states.getLast(); return states.getLast();
@@ -42,7 +46,7 @@ public class StateManager {
return currentState; return currentState;
} }
private void restoreState(Map<Cell, Integer> state) { public void restoreState(Map<Cell, Integer> state) {
for (var entry : state.entrySet()) { for (var entry : state.entrySet()) {
entry.getKey().setSymbolIndex(entry.getValue()); entry.getKey().setSymbolIndex(entry.getValue());
} }

78
app/src/main/java/sudoku/structure/SudokuFiller.java Normal file
View File

@@ -0,0 +1,78 @@
package sudoku.structure;
import java.util.List;
import java.util.Random;
import sudoku.solver.BacktrackingSolver;
import sudoku.solver.HumanSolver;
import sudoku.solver.MixedSolver;
import sudoku.solver.RandomSolver;
import sudoku.solver.Solver;
public class SudokuFiller {
private static boolean isPossiblySolvable(MultiDoku doku) {
for (Cell cell : doku.getEmptyCells()) {
if (cell.getPossibleSymbols().size() == 0)
return false;
}
return true;
}
private static void tryFillRandomCells(MultiDoku doku) {
Random r = new Random();
while (isPossiblySolvable(doku)) {
int cellCount = doku.getEmptyCells().size();
if (cellCount == 0)
return;
Cell cellToFill = doku.getEmptyCells().get(r.nextInt(cellCount));
if (!cellToFill.isEmpty() || !cellToFill.isMutable())
continue;
List<Integer> possibleSymbols = cellToFill.getPossibleSymbols();
int symbolCount = possibleSymbols.size();
// la cellule n'a pas de valeur possible
if (symbolCount == 0)
return;
cellToFill.setSymbolIndex(possibleSymbols.get(r.nextInt(symbolCount)));
}
}
private static void removeRandomCell(MultiDoku doku) {
Random r = new Random();
int cellCount = doku.getFilledCells().size();
doku.getFilledCells().get(r.nextInt(cellCount)).clearCurrentSymbol();
}
private static void makeSolvable(MultiDoku doku) {
while (!isPossiblySolvable(doku)) {
removeRandomCell(doku);
}
Solver solver = new BacktrackingSolver();
boolean solvable = false;
while (!solvable) {
removeRandomCell(doku);
doku.getStateManager().pushState();
solvable = solver.solve(doku);
doku.getStateManager().popState();
System.out.println("eeeeeeeeeeeee");
}
}
private static void fillDoku(MultiDoku doku) {
tryFillRandomCells(doku);
makeSolvable(doku);
}
private static void setCellsImmutable(MultiDoku doku) {
for (Cell cell : doku.getFilledCells())
cell.setImmutable();
}
public static void fillDoku(MultiDoku doku, Difficulty difficulty) {
fillDoku(doku);
setCellsImmutable(doku);
}
}