Auto

Enter.java

@@ -36,8 +36,12 @@ public class Enter extends JPanel {
                         String valueStr = JOptionPane.showInputDialog(null, "Enter value for the selected cell:");
                         try {
                             int value = Integer.parseInt(valueStr);
+                            if (isValidValue(value, selectedRow, selectedCol)) {
                                 grid[selectedRow][selectedCol] = value;
                                 repaint();
+                            } else {
+                                JOptionPane.showMessageDialog(null, "Not possible.");
+                            }
                         } catch (NumberFormatException ex) {
                             JOptionPane.showMessageDialog(null, "Invalid input. Please enter a number.");
                         }
@@ -53,6 +57,34 @@ public class Enter extends JPanel {
         return initialGrid;
     }
 
+    private boolean isValidValue(int value, int row, int col) {
+        // Vérifier la ligne
+        for (int i = 0; i < grid[row].length; i++) {
+            if (grid[row][i] == value && i != col) {
+                return false;
+            }
+        }
+
+        // Vérifier la colonne
+        for (int i = 0; i < grid.length; i++) {
+            if (grid[i][col] == value && i != row) {
+                return false;
+            }
+        }
+
+        // Vérifier la région
+        int regionRow = row / REGION_SIZE * REGION_SIZE;
+        int regionCol = col / REGION_SIZE * REGION_SIZE;
+        for (int i = regionRow; i < regionRow + REGION_SIZE; i++) {
+            for (int j = regionCol; j < regionCol + REGION_SIZE; j++) {
+                if (grid[i][j] == value && (i != row || j != col)) {
+                    return false;
+                }
+            }
+        }
+
+        return true;
+    }
 
     @Override
     protected void paintComponent(Graphics g) {
@@ -85,6 +117,4 @@ public class Enter extends JPanel {
             }
         }
     }
-
-
 }