Update 236.lowest-common-ancestor-of-a-binary-tree.md

taojin1992 · web-flow · commit 5f1ab07ee4f9 · 2021-08-01T21:48:41.000-07:00
diff --git a/problems/236.lowest-common-ancestor-of-a-binary-tree.md b/problems/236.lowest-common-ancestor-of-a-binary-tree.md
@@ -138,7 +138,7 @@ class Solution:
 **复杂度分析**
 
 - 时间复杂度：$O(N)$
-- 空间复杂度：$O(N)$
+- 空间复杂度：$O(Height)$
 
 ## 扩展
 
