Update is_symmetric.py (keon#396)

johnvonlzf · Sep 28, 2018 · 30ca4ae · 30ca4ae
1 parent 3f9aa45
commit 30ca4ae
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/algorithms/tree/is_symmetric.py b/algorithms/tree/is_symmetric.py
@@ -46,7 +46,7 @@ def is_symmetric_iterative(root):
             return False
         if left.val == right.val:
             stack.append([left.left, right.right])
-            stack.append([left.right, right.right])
+            stack.append([left.right, right.left])
         else:
             return False
     return True