Replace GridIterator.java

GridIterator.java

 import java.util.Iterator;
 
-/**
+ /**
  * {@link GridIterator} instances are used to iterate over the cells of a grid.
  */
 public class GridIterator implements Iterator<Cell> {
@@ -8,11 +8,12 @@ public class GridIterator implements Iterator<Cell> {
     private int columnIndex;
     private Grid grid;
 
+
     GridIterator(Grid grid) {
         this.rowIndex = 0;
         this.columnIndex = 0;
-        this.grid = grid;
-    }
+        this.grid = grid; }
+
 
     @Override
     public boolean hasNext() {