odd 初始化为链表的头节点,即第一个奇数节点。 even 初始化为链表的第二个节点,即第一个偶数节点。 even_head 保存偶数节点链表的头,以便后续将其连接到奇数节点链表的尾部 迭代遍历链表: 使用while even and even.next 遍历链表,确保每次操作都将奇数节点连接到下一个奇数节点,偶数节点连接到下一个偶数节点。
* public class ListNode { * int val; * ListNode next; * ListNode(int x) { val = x; } * } */ public class Solution { public ListNode oddEvenList(ListNode head) { if (head == null || head.next == null) return head; ListNode even = head.next; ListNode evenNext = even; ListNo...
(1)先递归oddEvenList(head -> next -> next),链表此时为2->1->(递归结果:3->6->7->5->4)(2)把2插入到3(递归结果奇数位的第一个位置)前面,把1插入到5前面(递归结果偶数位的第一个位置)此法缺点,每次递归都要求当前链表长度,时间复杂度肯定超O(n)了,不推荐...
https://leetcode.com/problems/odd-even-linked-list/ 建两个dummy node,一个维护奇数节点构成的链表,另一个维护偶数节点构成的链表,最后再拼接起来。注意偶数节点构成的链表最后一个节点的next域要置空,否则可能会导致出现环路。 classSolution{public:ListNode*oddEvenList(ListNode* head){if(!head || !head-...
LeetCode-Odd Even Linked List Description: Given a singly linked list, group all odd nodes together followed by the even nodes. Please note here we are talking about the node number and not the value in the nodes. You should try to do it in place. The program should run in O(1) ...
[LeetCode] Odd Even Linked List 奇偶链表 Given a singly linked list, group all odd nodes together followed by the even nodes. Please note here we are talking about the node number and not the value in the nodes. You should try to do it in place. The program should run in O(1) ...
每天一算:Odd Even Linked List LeetCode上第328号问题:Odd Even Linked List 题目 给定一个单链表,把所有的奇数节点和偶数节点分别排在一起。请注意,这里的奇数节点和偶数节点指的是节点编号的奇偶性,而不是节点的值的奇偶性。 请尝试使用原地算法完成。你的算法的空间复杂度应为 O(1),时间复杂度应为 O(...
https://leetcode.com/problems... # Definition for singly-linked list. # class ListNode: # def __init__(self, x): # self.val = x # self.next = None class Solution: def oddEvenList(self, head: ListNode) -> ListNode: # If zero, one or two elements, then solved ...
通过iOS / Android 浏览器安装 PWA 版《LeetCode Cookbook》至设备桌面随时学习 Data Structures 标识了 ✅ 的专题是完成所有题目了的,没有标识的是还没有做完所有题目的 Array String ✅ Two Pointers ✅ Linked List ✅ Stack Tree Dynamic programming ✅ Backtracking Depth First Search Breadth First ...
Odd Even Linked List Given a singly linked list, group all odd nodes together followed by the even nodes. Please note here we are talking about the node number and not the value in the nodes. You shou...LeetCode 1295. Find Numbers with Even Number of Digits (C语言) 题目Given an arr...