Merge branch 'serialize-fix'

app/src/test/java/sudoku/SudokuSerializerTest.java

@@ -3,6 +3,9 @@ package sudoku;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
 import java.io.File;
 import java.util.Random;
 
@@ -50,7 +53,7 @@ public class SudokuSerializerTest {
         Solver.solveRandom(sudoku, new Random());
         JSONObject data = SudokuSerializer.serializeSudoku(sudoku);
         MultiDoku multiDoku = SudokuSerializer.deserializeSudoku(data);
-
+        
         assertTrue(data.toString().equals(SudokuSerializer.serializeSudoku(multiDoku).toString()));
     }