opt

src/leecode/tree/TreeNode.java

@@ -1,10 +1,10 @@
 package leecode.tree;
 
 public class TreeNode {
-      int val;
-      TreeNode left;
-      TreeNode right;
-      TreeNode(int x) {
+      public int val;
+      public TreeNode left;
+      public TreeNode right;
+      public TreeNode(int x) {
           val = x;
       }