【一天一道LeetCode】#83. Remove Duplicates from Sorted List

一天一道LeetCode

本系列文章已全部上传至我的github,地址:ZeeCoder‘s Github

欢迎大家关注我的新浪微博,我的新浪微博

欢迎转载,转载请注明出处

(一)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.

(二)解题

题目大意:删除一个链表中重复的节点,注意这里重复的节点需要保留一个。与【一天一道LeetCode】#82. Remove Duplicates from Sorted List II不同之处就在于此!

解题思路:用一个指针p遍历整个链表,每次遍历到一个节点,就创建一个临时指针ptmp往后查找与它相同的节点,直到找到一个与它不同的节点,然后把p的next指向ptmp,再让p从ptmp向后继续遍历。

/**
 * 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) {
        ListNode* p = head;
        while(p!=NULL)
        {
            ListNode* pnext = p;
            while(pnext!=NULL&&pnext->val==p->val) {//一直往后查找,知道找到一个不相同的节点
                pnext=pnext->next;
            }
            p->next = pnext;//将p的next指向pnext
            p = pnext;//从pnext继续向后遍历
        }
        return head;
    }
};
时间: 2024-10-14 04:24:26

【一天一道LeetCode】#83. Remove Duplicates from Sorted List的相关文章

leetCode 83. Remove Duplicates from Sorted List 链表

83. Remove Duplicates from Sorted List 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. 题目大意: 去除有序链表内部相同元素,即相同

leetcode:83 Remove Duplicates from Sorted List-每日编程第十六题

Remove Duplicates from Sorted List Total Accepted: 89961 Total Submissions: 253975 Difficulty: Easy 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-&g

Leetcode 83 Remove Duplicates from Sorted List (快慢指针)

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. 题目解析: LinkedList果然是各种快慢指针的解题啊! 两个Node, 一个fast, 一个lower 如果lowe

leetCode 83.Remove Duplicates from Sorted List(删除排序链表的反复) 解题思路和方法

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. 思路:此题与上一题异曲同工,详细解法例如以下: /** * Definition for singly-linked

Java [Leetcode 83]Remove Duplicates from Sorted List

题目描述: 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. 代码如下: 代码一,正常解法: /** * Definition for singly-linked list

[leetcode] 83. Remove Duplicates from Sorted List 解题报告

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. 备份头指针,分3种情况判断即可 public ListNode deleteDuplicates(ListNode hea

leetCode 83.Remove Duplicates from Sorted List(删除排序链表的重复) 解题思路和方法

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. 思路:此题与上一题异曲同工,具体解法如下: /** * Definition for singly-linked li

[leetcode]83. Remove Duplicates from Sorted List有序链表去重

Given a sorted linked list, delete all duplicates such that each element appear only once. Example 1: Input: 1->1->2 Output: 1->2 Example 2: Input: 1->1->2->3->3 Output: 1->2->3 题意: 有序链表去重 思路: 代码: 1 class Solution { 2 public Lis

(Java) LeetCode 83. Remove Duplicates from Sorted List —— 删除排序链表中的重复元素

Given a sorted linked list, delete all duplicates such that each element appear only once. Example 1: Input: 1->1->2 Output: 1->2 Example 2: Input: 1->1->2->3->3 Output: 1->2->3 很简单的链表问题,可以写成递归和迭代两种形式.具体思路: 第一步,寻找第一个节点值和当前表头所指的节

[LeetCode] 83. Remove Duplicates from Sorted List ☆(从有序数组中删除重复项)

描述 Given a sorted linked list, delete all duplicates such that each element appear only once. Example 1: Input: 1->1->2Output: 1->2Example 2: Input: 1->1->2->3->3Output: 1->2->3 有序链表去重. 解析 移除给定有序链表的重复项,那么我们可以遍历这个链表,每个结点和其后面的结点比较