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a guest Oct 15th, 2019 70 Never
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  1. package com.company;
  2.  
  3. public class ListNode {
  4.     int val;
  5.     ListNode next;
  6.  
  7.     ListNode(int x) {
  8.         val = x;
  9.     }
  10.  
  11.     public ListNode deleteDuplicates(ListNode head) {
  12.         while (head.next != null) {
  13.             if (head.val == head.next.val) {
  14.                 head.next = head.next.next;
  15.                 continue;
  16.             }
  17.             head = head.next;
  18.         }
  19.         return null;
  20.     }
  21.  
  22.  
  23.     @Override
  24.     public String toString() {
  25.         if (next != null) {
  26.             return val + ", " + next;
  27.         } return val + "";
  28.     }
  29. }
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