MORE REFORMATTING

Pls like my code CheckStyle

src/main/java/edu/rpi/legup/model/Puzzle.java

@@ -220,8 +220,9 @@ public boolean isValidTextInput(String[] statements) {
      * @return true if the board was solved correctly, false otherwise
      */
     public boolean isPuzzleComplete() {
-        if (tree == null)
+        if (tree == null) {
             return false;
+        }
 
         boolean isComplete = tree.isValid();
         if (isComplete) {

src/main/java/edu/rpi/legup/model/PuzzleExporter.java

@@ -29,6 +29,7 @@ public abstract class PuzzleExporter {
 
     /**
      * PuzzleExporter Constructor exports the puzzle object to a file
+     *
      * @param puzzle puzzle that is to be exported
      */
     public PuzzleExporter(Puzzle puzzle) {

src/main/java/edu/rpi/legup/model/PuzzleImporter.java

@@ -21,6 +21,7 @@ public abstract class PuzzleImporter {
 
     /**
      * PuzzleImporter Constructor creates the puzzle object
+     *
      * @param puzzle puzzle that is imported
      */
     public PuzzleImporter(Puzzle puzzle) {

src/main/java/edu/rpi/legup/model/tree/Tree.java

@@ -101,6 +101,7 @@ public Set<TreeElement> getLeafTreeElements() {
 
     /**
      * Gets a Set of TreeNodes that are leaf nodes from the sub tree rooted at the specified node
+     *
      * @param node node that is input
      * @return Set of TreeNodes that are leaf nodes from the sub tree
      */