Java remove duplicates from linked list

Question

I want to remove duplicates from sorted linked list {0 1 2 2 3 3 4 5}.

`

public Node removeDuplicates(Node header)
{
    Node tempHeader = null;
    if(         


        

Answer 1

public ListNode removeDuplicateElements(ListNode head) {
  if (head == null || head.next == null) {
        return null;
    }
    if (head.data.equals(head.next.data)) {
        ListNode next_next = head.next.next;
        head.next = null;
        head.next = next_next;
        removeDuplicateElements(head);
    } else {
        removeDuplicateElements(head.next);
    }
    return head;
}