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Problem: Remove Nth Node From End of List

Understand how to remove the nth node from the end of a singly linked list by applying the two-pointer technique. This lesson guides you through using fast and slow pointers with a dummy node to perform a single-pass removal efficiently, handling edge cases such as removing the head node.

Statement

Given the head of a singly linked list, remove the nthn^{th} node from the end of the list and return the head of the modified list.

Constraints:

  • The number of nodes in the list is sz

  • 11 \leq sz 30\leq 30

  • ...