Given1->1->1->2->3, return2->3. 非经常规的解法。为去除头节点的特殊性,须要用到虚拟头结点技术。 ListNode*deleteDuplicates(ListNode*head){if(!head)returnNULL;ListNode*dummyHead=newListNode(0);dummyHead->next=head;ListNode*prev=dummyHead,*curr=head->next;intcurVal=head->val;while(curr){i...
Given theheadof a linked list, find all the values that appear more than once in the list and delete the nodes that have any of those values. Returnthe linked list after the deletions. Example 1: Input: head = [1,2,3,2] Output: [1,3] Explanation: 2 appears twice in the linked ...
唯一不同的是, 第二个题需要设置一个变量来控制重复的个数是否超过2 26. Remove Duplicates from Sorted Array classSolution {public:intremoveDuplicates(vector<int>&nums) {if(nums.empty())return0;intpre =0;intcur =1;while(cur <nums.size()){if(nums[pre] ==nums[cur]) cur++;elsenums[++pre]...
Given theheadof a linked list, find all the values that appear more than once in the list and delete the nodes that have any of those values. Returnthe linked list after the deletions. Example 1: Input: head = [1,2,3,2] Output: [1,3] Explanation: 2 appears twice in the linked ...
Can you solve this real interview question? Remove Linked List Elements - Given the head of a linked list and an integer val, remove all the nodes of the linked list that has Node.val == val, and return the new head. Example 1: [https://assets.leetc
83. 删除排序链表中的重复元素 - 给定一个已排序的链表的头 head , 删除所有重复的元素,使每个元素只出现一次 。返回 已排序的链表 。 示例 1: [https://assets.leetcode.com/uploads/2021/01/04/list1.jpg] 输入:head = [1,1,2] 输出:[1,2] 示例 2: [https
https://leetcode.com/problems/remove-linked-list-elements 和常规的删除一个node的情况不同的是,它要求删除所有val为指定值的node。 这道题要注意一个点: head node 的值是指定值,和中间node的值为指定值,在操作上不一样。比较好的办法是,在head前创建一个dummy node,那么这两种情况的操作就一样,最后返回...
Similar Questions:[Remove Duplicates from Sorted Array][Remove Linked List Elements][Move Zeroes] 题目:Given an array and a value, remove all instances of that value in-place and return the new length. Do not allocate extra space for another array, you must do this by ...
82. Remove Duplicates from Sorted List II Given a sorted linked list, delete all nodes that have duplicate numbers, leaving onlydistinctnumbers from the original list. Example 1: Input:1->2->3->3->4->4->5Output:1->2->5 Example 2: ...
简介:Remove all elements from a linked list of integers that have value val.Example Given: 1 –> 2 –> 6 –> 3 –> 4 –> 5 –> 6, val = 6 Return: 1 –> 2 –> 3 –> 4 –> Remove all elements from a linked list of integers that have value val. ...