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# [19. Remove Nth Node From End of List](https://leetcode.com/problems/remove-nth-node-from-end-of-list/)
## 题目
Given a linked list, remove the n-th node from the end of list and return its head.
Example:
```
Given linked list: 1->2->3->4->5, and n = 2.
After removing the second node from the end, the linked list becomes 1->2->3->5.
```
## 题目大意
删除链表中倒数第 n 个结点。
## 解题思路
这道题比较简单,先循环一次拿到链表的总长度,然后循环到要删除的结点的前一个结点开始删除操作。需要注意的一个特例是,有可能要删除头结点,要单独处理。
这道题有一种特别简单的解法。设置 2 个指针,一个指针距离前一个指针 n 个距离。同时移动 2 个指针2 个指针都移动相同的距离。当一个指针移动到了终点,那么前一个指针就是倒数第 n 个节点了。