app/src/main/java/gui/SudokuView.java

@@ -1,8 +1,6 @@
 package gui;
 
 import javax.swing.*;
-import javax.swing.border.Border;
-
 import java.awt.*;
 import java.awt.event.*;
 
@@ -29,42 +27,24 @@ public class SudokuView extends JFrame {
         setTitle("Sudoku Solver");
         setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         setLayout(new BorderLayout());
-        setIconImage(new ImageIcon("src/main/resources/sudoku.png").getImage());
 
         initializeGrid();
         initializeButtons();
 
-        setMinimumSize(new Dimension(500, 500));
-        pack(); // Resize the window to fit the components, if necessary
-        setLocationRelativeTo(null); // Center the window
+        pack();
+        setLocationRelativeTo(null);
     }
 
     /** Initialize the grid, called by the constructor */
     private void initializeGrid() {
         grid = new JTextField[9][9];
         JPanel gridPanel = new JPanel(new GridLayout(9, 9));
-        gridPanel.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
-
-        int fontSize = 24;
-        String fontName = gridPanel.getFont().getName();
-        Border border = BorderFactory.createLineBorder(Color.BLACK);
-        Font font = new Font(fontName, Font.BOLD, fontSize);
 
         for (int row = 0; row < 9; row++) {
             for (int col = 0; col < 9; col++) {
-                JTextField cell = new JTextField(2);
-                cell.setHorizontalAlignment(JTextField.CENTER);
-                cell.setFont(font);
-                cell.setBorder(border);
-                cell.setForeground(Color.BLACK);
-
-                // Set background color to gray for every third JTextField
-                if ((row / 3 + col / 3) % 2 == 1) {
-                    cell.setBackground(Color.LIGHT_GRAY);
-                }
-
-                grid[row][col] = cell;
-                gridPanel.add(cell);
+                grid[row][col] = new JTextField(2);
+                grid[row][col].setHorizontalAlignment(JTextField.CENTER);
+                gridPanel.add(grid[row][col]);
             }
         }
 

app/src/main/java/sudoku/Solver.java

@@ -20,18 +20,10 @@ public class Solver implements SudokuSolver {
         this.board = board;
     }
 
-    /**
-     * {@inheritDoc}
-     * <p>
-     * Note that this returns a copy of the board, not the actual board
-     */
+    /** {@inheritDoc} */
     @Override
     public int[][] getBoard() {
-        int[][] copy = new int[9][9];
-        for (int row = 0; row < 9; row++) {
-            System.arraycopy(board[row], 0, copy[row], 0, 9);
-        }
-        return copy;
+        return board;
     }
 
     /** Resets the board to all zeros */
@@ -42,6 +34,7 @@ public class Solver implements SudokuSolver {
                 row[i] = 0;
             }
         }
+        // board = new int[9][9];
     }
 
     /* {@inheritDoc} */
@@ -127,8 +120,8 @@ public class Solver implements SudokuSolver {
         }
     }
 
-    /**
-     * {@inheritDoc}
+    /** 
+     * {@inheritDoc} 
      * <p>
      * This is <b>not</b> checked for validity
      */

app/src/test/java/sudoku/SolverTest.java

@@ -17,12 +17,8 @@ class SolverTest {
         Solver solver = new Solver();
         int[][] board = new int[9][9];
         solver.setBoard(board);
-
-        for (int row = 0; row < 9; row++) {
-            assertArrayEquals(board[row], solver.getBoard()[row]);
-        }
+        assertEquals(board, solver.getBoard());
     }
-    
 
     @Test
     void randomizeBoardTest() {
@@ -32,12 +28,6 @@ class SolverTest {
         assertNotEquals(board, solver.getBoard());
     }
 
-    @Test
-    void emptyTest() {
-        Solver solver = new Solver();
-        assertTrue(solver.solve());
-    }
-
     @Test
     void legalTest() {
         Solver solver = new Solver();