1d array

cell.cpp

@@ -31,6 +31,9 @@ Cell::Cell(QWidget *parent) : QWidget(parent)
     connect(m_number,SIGNAL(clicked()),this,SLOT(un()));
 }
 
+Cell::Cell(const Cell &old_obj){
+    qInfo("aaa");
+}
 void Cell::collapse(int x)
 {
     collapsed = true;

cell.h

@@ -9,6 +9,7 @@ class Cell : public QWidget
     Q_OBJECT
 public:
     explicit Cell(QWidget *parent = 0);
+    Cell (const Cell &old_obj); 
     int possibleStates=9;
     bool collapsed = false;
     std::vector<int> index={0,1,2,3,4,5,6,7,8};

window.cpp

@@ -36,8 +36,8 @@ Window::Window(QWidget *parent)
                 dy = 4;
             if (y >= 6)
                 dy = 8;
-            m_cell[x][y] = new Cell(this);
-            m_cell[x][y]->setGeometry(x * 100 + dx, y * 100 + dy, 100, 100);
+            m_cell[x+y*9] = new Cell(this);
+            m_cell[x+y*9]->setGeometry(x * 100 + dx, y * 100 + dy, 100, 100);
             /* code */
         }
     }
@@ -48,11 +48,11 @@ Window::Window(QWidget *parent)
         {
             for (int d = 0; d < 9; d++)  //rows and columns
             {
-                connect(m_cell[x][y], SIGNAL(update(int)), m_cell[x][d], SLOT(removeOption(int)));
-                connect(m_cell[x][y], SIGNAL(update(int)), m_cell[d][y], SLOT(removeOption(int)));
+                connect(m_cell[x+y*9], SIGNAL(update(int)), m_cell[x+d*9], SLOT(removeOption(int)));
+                connect(m_cell[x+y*9], SIGNAL(update(int)), m_cell[d+y*9], SLOT(removeOption(int)));
 
-                connect(m_cell[x][y], SIGNAL(undo(int)), m_cell[x][d], SLOT(addOption(int)));
-                connect(m_cell[x][y], SIGNAL(undo(int)), m_cell[d][y], SLOT(addOption(int)));
+                connect(m_cell[x+y*9], SIGNAL(undo(int)), m_cell[x+d*9], SLOT(addOption(int)));
+                connect(m_cell[x+y*9], SIGNAL(undo(int)), m_cell[d+y*9], SLOT(addOption(int)));
             }
             int a = x / 3 * 3;
             int b = y / 3 * 3;
@@ -60,9 +60,9 @@ Window::Window(QWidget *parent)
             {
                 for (int y1 = b; y1 < b + 3; y1++)
                 {
-                    connect(m_cell[x][y], SIGNAL(update(int)), m_cell[x1][y1], SLOT(removeOption(int)));
+                    connect(m_cell[x+y*9], SIGNAL(update(int)), m_cell[x1+y1*9], SLOT(removeOption(int)));
 
-                    connect(m_cell[x][y], SIGNAL(undo(int)), m_cell[x1][y1], SLOT(addOption(int)));
+                    connect(m_cell[x+y*9], SIGNAL(undo(int)), m_cell[x1+y1*9], SLOT(addOption(int)));
                 }
             }
         }
@@ -80,17 +80,17 @@ void Window::solveButtonClicked()
         {
             for (int y = 0; y < 9; y++)
             {
-                if (m_cell[x][y]->collapsed)
+                if (m_cell[x+y*9]->collapsed)
                     continue;
-                else if (m_cell[x][y]->possibleStates < minEtropy)
+                else if (m_cell[x+y*9]->possibleStates < minEtropy)
                 {
-                    minEtropy = m_cell[x][y]->possibleStates;
+                    minEtropy = m_cell[x+y*9]->possibleStates;
                     b.clear();
-                    b.push_back(m_cell[x][y]);
+                    b.push_back(m_cell[x+y*9]);
                 }
-                else if (m_cell[x][y]->possibleStates == minEtropy)
+                else if (m_cell[x+y*9]->possibleStates == minEtropy)
                 {
-                    b.push_back(m_cell[x][y]);
+                    b.push_back(m_cell[x+y*9]);
                 }
             }
         }

window.h

@@ -17,7 +17,8 @@ private:
     QPushButton *grid[9][9];
     QProgressBar *m_progressBar;
     QSlider *m_slider;
-    Cell *m_cell[9][9];
+    //Cell *m_cell[9][9];
+    std::array<Cell *,81> m_cell;
     int m_delay =300;
 signals:
     void counterReached();