From 7659ee107201cf2a582e5dd8682fa75d375dbe12 Mon Sep 17 00:00:00 2001
From: CyC2018 <zhengyc101@163.com>
Date: Wed, 28 Oct 2026 13:45:05 +0800
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题目链接改为力扣中的对应题目，题目描述和代码按该题的接口调整。
---
 notes/36. 二叉搜索树与双向链表.md | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/notes/36. 二叉搜索树与双向链表.md b/notes/36. 二叉搜索树与双向链表.md
index 58b61faf..7c474b6f 100644
--- a/notes/36. 二叉搜索树与双向链表.md	
+++ b/notes/36. 二叉搜索树与双向链表.md	
@@ -1,6 +1,6 @@
 # 36. 二叉搜索树与双向链表
 
-[NowCoder](https://www.nowcoder.com/practice/947f6eb80d944a84850b0538bf0ec3a5?tpId=13&tqId=11179&tPage=1&rp=1&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking&from=cyc_github)
+[Leetcode](https://leetcode.cn/problems/er-cha-sou-suo-shu-yu-shuang-xiang-lian-biao-lcof/)
 
 ## 题目描述
 
@@ -11,15 +11,21 @@
 ## 解题思路
 
 ```java
-private TreeNode pre = null;
-private TreeNode head = null;
+private Node pre = null;
+private Node head = null;
 
-public TreeNode Convert(TreeNode root) {
+public Node treeToDoublyList(Node root) {
+    if (root == null)
+        return null;
+    head = null;
+    pre = null;
     inOrder(root);
+    head.left = pre;
+    pre.right = head;
     return head;
 }
 
-private void inOrder(TreeNode node) {
+private void inOrder(Node node) {
     if (node == null)
         return;
     inOrder(node.left);