From 2789554d525d2e02d94b669bdf582441bd249d19 Mon Sep 17 00:00:00 2001
From: Luo <82520819+Jerry-306@users.noreply.github.com>
Date: Wed, 1 Dec 2021 20:56:22 +0800
Subject: [PATCH] =?UTF-8?q?=E6=9B=B4=E6=AD=A3=200019=20=E5=88=A0=E9=99=A4?=
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---
 problems/0019.删除链表的倒数第N个节点.md | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/problems/0019.删除链表的倒数第N个节点.md b/problems/0019.删除链表的倒数第N个节点.md
index e05b9d03..188c4c57 100644
--- a/problems/0019.删除链表的倒数第N个节点.md
+++ b/problems/0019.删除链表的倒数第N个节点.md
@@ -173,8 +173,7 @@ var removeNthFromEnd = function(head, n) {
     let ret = new ListNode(0, head),
         slow = fast = ret;
     while(n--) fast = fast.next;
-    if(!fast) return ret.next;
-    while (fast.next) {
+    while (fast.next !== null) {
         fast = fast.next; 
         slow = slow.next
     };