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 };