leetcode之83. Remove Duplicates from Sorted List（C++实现 链表去重）

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.

[b]******************************[/b]我是一条分割线[b]***************************[/b]

/**
* Definition for singly-linked list.
* struct ListNode {
*     int val;
*     ListNode *next;
*     ListNode(int x) : val(x), next(NULL) {}
* };
*/
class Solution {
public:
ListNode* deleteDuplicates(ListNode* head) {
if(!head || !head->next) return head;
ListNode* heads=head;
while(heads)
{
if(heads->next!=NULL && heads->val==heads->next->val)
{
ListNode* temp=heads->next;
heads->next=temp->next;
}
else
heads=heads->next;
}
return head;
}
};

测试程序在24题里面有哈，直接加进去就可以测试啦~~~