Remove duplicates from an unsorted linked list

Question

import java.util.*;
/*
 *  Remove duplicates from an unsorted linked list
 */
public class LinkedListNode {  
    public int data;  
    public LinkedListNode next;          


        

Answer 1

Here is a very easy version.

LinkedList a = new LinkedList(){{
  add(1);
  add(1);
}}
Set set = new HashSet(a);
a = new LinkedList(set);

Very concise. Isn't it?