public class Solution
extends Object
19 - Remove Nth Node From End of List\.
Medium
Given the `head` of a linked list, remove the `nth` node from the end of the list and return its head.
**Example 1:**

**Input:** head = [1,2,3,4,5], n = 2
**Output:** [1,2,3,5]
**Example 2:**
**Input:** head = [1], n = 1
**Output:** []
**Example 3:**
**Input:** head = [1,2], n = 1
**Output:** [1]
**Constraints:**
* The number of nodes in the list is `sz`.
* `1 <= sz <= 30`
* `0 <= Node.val <= 100`
* `1 <= n <= sz`
**Follow up:** Could you do this in one pass?