Update README.md

masx200 · web-flow · commit 7c2ff80fe60d · 2022-09-09T23:08:15.000+08:00
diff --git a/README.md b/README.md
@@ -10,6 +10,8 @@ leetcode 测试
 
 ##### 包含的内容如下
 
+https://leetcode-cn.com/problems/trim-a-binary-search-tree/
+
 https://leetcode.cn/problems/course-schedule/
 
 https://leetcode.cn/problems/QA2IGt/
