Remove Nth Node From End of List

Requirements Given the first node of a singly linked list and an integer n, where counting begins at 1 from the list's end. Delete the node that is n positions from the tail, then return the resulting head node. Constraint: the list must be processed with a single traversal. Notes Apply a two-pointer technique: move fast forward by n+1 positions, then advance both pointers together until fast becomes null. At that point, slow.next identifies the node immediately before the…