首页 > 代码库 > leetcode83,删除有序链表中的重复元素

leetcode83,删除有序链表中的重复元素

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.

 

难点就一个,就是要考虑到连续3个和3个以上的情况。

 

/** * 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) {        if(head != null)        {            ListNode nodeA = head;            ListNode nodeB = head.next;            while(nodeB != null)            {                if(nodeA.val == nodeB.val){                    nodeA.next = nodeB.next;                    nodeB = nodeB.next;                }else{                    nodeA = nodeB;                    nodeB = nodeB.next;                }            }        }        return head;    }}

leetcode83,删除有序链表中的重复元素