题目描述：
方法一：快慢指针
class Solution: def removeNthFromEnd(self, head: ListNode, n: int) -> ListNode: if not head: return dummy = ListNode(0) dummy.next = head fast = dummy while n: fast = fast.next n -= 1 slow = dummy while fast and fast.next: fast = fast.next slow = slow.next slow.next = slow.next.next return dummy.next
方法二：
class Solution: def removeNthFromEnd(self, head: ListNode, n: int) -> ListNode: p_list = [] p = head while p: p_list.append(p.val) p = p.next del p_list[-n] return p_list
原文：https://www.cnblogs.com/oldby/p/11161771.html