Given the head of a linked list and an integer n, remove the nth node from the end of the list and return its head.
Example 1:
Input: head = [1,2,3,4], n = 2
Output: [1,2,4]
Example 2:
Input: head = [5], n = 1
Output: []
Example 3:
Input: head = [1,2], n = 2
Output: [2]
Constraints:
- The number of nodes in the list is
sz.
1 <= sz <= 300 <= Node.val <= 1001 <= n <= sz
ExamplesExample 1:
Input: head = [1,2,3,4], n = 2
Output: [1,2,4]
Example 2:
Input: head = [5], n = 1
Output: []
Example 3:
Input: head = [1,2], n = 2
Output: [2]