删除重复节点 Remove Duplicates from Sorted List

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删除重复节点 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. /** * Definition for singly-linked list. * struct ListNode {…

[Swift]LeetCode26. 删除排序数组中的重复项 | Remove Duplicates from Sorted Array

Given a sorted array nums, remove the duplicates in-place such that each element appear only once and return the new length. Do not allocate extra space for another array, you must do this by modifying the input array in-place with O(1) extra memory.…

LeetCode 26：删除排序数组中的重复项 Remove Duplicates from Sorted Array

给定一个排序数组,你需要在原地删除重复出现的元素,使得每个元素只出现一次,返回移除后数组的新长度. 不要使用额外的数组空间,你必须在原地修改输入数组并在使用 O(1) 额外空间的条件下完成. Given a sorted array nums, remove the duplicates in-place such that each element appear only once and return the new length. Do not allocate extra space f…

[Swift]LeetCode83. 删除排序链表中的重复元素 | Remove Duplicates from Sorted List

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 给定一个排序链表,删除所有重复的元素,使得每个元素只出现一次. 示例 1: 输入: 1->1-…

LeetCode：删除排序数组中的重复项 (Remove Duplicates from Sorted Array)

public class RemoveDuplicates { /** * 修改数组,使数组有序不重复.超出长度不考虑. * @param 排序数组 * @return 数组不重复数的个数 */ public int removeDuplicates(int[] nums) { // 需要修改的元素的索引,从1开始 int index = 1; // 遍历数组,次数是长度-1 for (int i = 0; i < nums.length - 1; i++) { // 对相邻数进行异或,相同数异…

LeetCode 83. Remove Duplicates from Sorted List（从有序链表中删除重复节点）

题意:从有序链表中删除重复节点. /** * 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 == NULL || head…

leetcode 203. Remove Linked List Elements 、83. Remove Duplicates from Sorted List 、82. Remove Duplicates from Sorted List II(剑指offer57 删除链表中重复的结点)

203题是在链表中删除一个固定的值,83题是在链表中删除重复的数值,但要保留一个:82也是删除重复的数值,但重复的都删除,不保留. 比如[1.2.2.3],83题要求的结果是[1.2.3],82题要求的结果是[1,3]. 这种题用递归去做比较方便思考,特别是这种重复的数值.递归就是只遍历当前的节点的情况,之前的不用管,之后的以当前节点为出发点思考问题. 203. Remove Linked List Elements class Solution { public: ListNode* remo…