[LeetCode] 83. Remove Duplicates from Sorted List Java

题目：

Given a sorted linked list, delete all duplicates such that each element appear only once.

For example,
Given 1->1->2, return 1->2.
Given 1->1->2->3->3, return 1->2->3.

题意：链表升序排列，删掉重复链表中的重复节点

代码：

/**
 * Definition for singly-linked list.
 * public class ListNode {
 *     int val;
 *     ListNode next;
 *     ListNode(int x) { val = x; }
 * }
 */
public class Solution {
    public ListNode deleteDuplicates(ListNode head) {
        ListNode list = head;
         
         while(list != null) {
             if (list.next == null) {
                 break;
             }
             if (list.val == list.next.val) {
                 list.next = list.next.next;
             } else {
                 list = list.next;
             }
         }
         
         return head;
    }
}