Given the head of a singly linked list, return the middle node of the linked list.If there are two middle nodes, return the second middle node. 英文版地址 leetcode.com/problems/m 中文版描述 给定一个头结点为 head 的非空单链表,返回链表的中间结点。如果有两个中间结点,则返回第二个中间结点。
01 看题和准备 今天介绍的是LeetCode算法题中Easy级别的第206题(顺位题号是876)。给定具有头节点的非空单链表,返回链表的中间节点。如果有两个中间节点,则返回第二个中间节点。例如: 输入:[1,2,3,4,5] 输出:此列表中的节点3(序列化:[3,4,5]) 返回的节点的值为3.(该节点的判断序列化为[3,4,5])。
LeetCode Given a non-empty, singly linked list with head nodehead, return a middle node of linked list. If there are two middle nodes, return the second middle node. Example 1: Input:[1,2,3,4,5]Output:Node3fromthis list (Serialization: [3,4,5]) The returned node has value3. (T...
Middle of the Linked List: leetcode.com/problems/m 链表的中间结点: leetcode.cn/problems/mi LeetCode 日更第 326 天,感谢阅读至此的你 欢迎点赞、收藏鼓励支持小满 发布于 2022-12-13 08:55・上海 算法与数据结构 力扣(LeetCode) Python 赞同添加评论 分享喜欢收藏申请转载...
876. Middle of the Linked List 题目分析 返回一个链表中最中间的元素。 思路 先全部塞入数组,再根据长度/2得到中间元素的下标,再返回。 最终代码 <?php /** * Definition for a singly-linked list. * class ListNode { * public $val = 0; ...
876. 链表的中间结点 - 给你单链表的头结点 head ,请你找出并返回链表的中间结点。 如果有两个中间结点,则返回第二个中间结点。 示例 1: [https://assets.leetcode.com/uploads/2021/07/23/lc-midlist1.jpg] 输入:head = [1,2,3,4,5] 输出:[3,4,5] 解释:链表
Given a non-empty, singly linked list with head node head, return a middle node of linked list. If there are two middle nodes, return the second middle node. Example 1: Input: [1,2,3,4,5] Output: Node 3 from this list (Serialization: [3,4,5]) The returned node has value 3....
Given a range [m, n] where 0 <= m <= n <= 2147483647, return the bitwise AND of all numbers in this range, inclusive. For example, given the range [5, 7], you should return 4. 思路: 先找前面二进制相同的位,后面不相同的位相与一定为0. ...
【leetcode】Evaluate Reverse Polish Notation(middle) Evaluate the value of an arithmetic expression inReverse Polish Notation. Valid operators are+,-,*,/. Each operand may be an integer or another expression. Some examples: ["2", "1", "+", "3", "*"] -> ((2 + 1) * 3) -> 9...
leetcode刷题--Middle of the Linked List 1. 题目描述 Given a non-empty, singly linked list with head node head, return a middle node of linked list. If there are two middle nodes, return the second middle node. 2. 示例 3. 算法思路 思路一:统计链表的长度,然后遍历找到中间......