From 27f8efa24c9d43b911fc7c05a7182508d50365cd Mon Sep 17 00:00:00 2001
From: Yuhao Ju <juguaguaji@gmail.com>
Date: Mon, 21 Nov 2022 23:12:33 +0800
Subject: [PATCH] =?UTF-8?q?=E5=9C=A8=E8=AE=BE=E8=AE=A1=E9=93=BE=E8=A1=A8?=
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---
 problems/0707.设计链表.md | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/problems/0707.设计链表.md b/problems/0707.设计链表.md
index 1264983b..9461e263 100644
--- a/problems/0707.设计链表.md
+++ b/problems/0707.设计链表.md
@@ -108,9 +108,12 @@ public:
     // 如果index大于链表的长度，则返回空
     // 如果index小于0，则置为0，作为链表的新头节点。
     void addAtIndex(int index, int val) {
-        if (index > _size || index < 0) {
+        if (index > _size) {
             return;
         }
+	if (index < 0) {
+            index = 0;
+        }
         LinkedNode* newNode = new LinkedNode(val);
         LinkedNode* cur = _dummyHead;
         while(index--) {