82. Remove Duplicates from Sorted List II

题目

Given a sorted linked list, delete all nodes that have duplicate numbers, leaving only distinct numbers from the original list.

Example 1:

Input: 1->2->3->3->4->4->5
Output: 1->2->5

Example 2:

Input: 1->1->1->2->3
Output: 2->3

题目大意

删除链表中重复的结点，只要是有重复过的结点，全部删除。

解题思路

按照题意做即可。