VMware Coding Challenge: Removing Duplicates Entries

    static LinkedListNode removeDuplicates(LinkedListNode list) {
        LinkedListNode cur = list;
        HashSet<Integer> set = new HashSet<Integer>();
        set.add(list.val);
        while (cur.next != null) {
            if (!set.contains(cur.next.val)) {
                set.add(cur.next.val);
                cur = cur.next;
            }
            else {
                cur.next = cur.next.next;
            }
        }
        return list;

    }