0019. Remove Nth Node From End of List

https://leetcode.com/problems/remove-nth-node-from-end-of-list

Description

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?

ac