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【leetcode刷题笔记】Remove Duplicates from Sorted List

2024-07-02 02:50:41   222人阅读

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.

题解：水题不解释

 1 /**
 2  * Definition for singly-linked list.
 3  * struct ListNode {
 4  *     int val;
 5  *     ListNode *next;
 6  *     ListNode(int x) : val(x), next(NULL) {}
 7  * };
 8  */
 9 class Solution {
10 public:
11     ListNode *deleteDuplicates(ListNode *head) {
12         ListNode *p = head;
13         while(p != NULL){
14             while(p->next != NULL && p->next->val == p->val){
15                 ListNode* temp = p->next;
16                 p->next = p->next->next;
17                 delete(temp);
18             }
19             if(p!=NULL)
20                 p = p->next;
21         }
22         return head;
23     }
24 };

 

 


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