Singly Linked List — Remove Duplicate Values

Requirements You receive the head pointer for a singly linked list containing integer values. Modify the list itself; relinking existing nodes is allowed, and constructing another list is also valid unless a prompt specifically disallows it. Preserve the earliest node for every distinct value and delete any later node holding that same value. This is the basic form of the broader LC 1836 task. Produce the head pointer of the resulting list. Nodes use this layout:…