refactor 226

fishercoder1534 · fishercoder1534 · commit 11c4cee00202 · 2021-10-26T07:48:18.000-07:00
diff --git a/src/main/java/com/fishercoder/solutions/_226.java b/src/main/java/com/fishercoder/solutions/_226.java
@@ -55,8 +55,8 @@ public static class Solution3 {
          * A more concise version
          */
         public TreeNode invertTree(TreeNode root) {
-            if (root == null || (root.left == null && root.right == null)) {
-                return root;
+            if (root == null) {
+                return null;
             }
             TreeNode temp = root.left;
             root.left = invertTree(root.right);
