链接:http://leetcode.com/onlinejudge Add Two Numbers You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a single digit. Add the two numbers and return it as a lin…

Problem:There are two sorted arrays A and B of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexity should be O(log (m+n)). 首先要知道什么是median,也就是我们所知的中位数,处于中间位置的数,很简单,如果长度为奇数,那么中位数就是中间的数,如,1,2,4,那么中位数就是2.如…

题意 You are given two non-empty linked lists representing two non-negative integers. The digits are stored in reverse order and each of their nodes contain a single digit. Add the two numbers and return it as a linked list. You may assume the two numb…

题目描述: You are given two non-empty linked lists representing two non-negative integers. The digits are stored in reverse order and each of their nodes contain a single digit. Add the two numbers and return it as a linked list. You may assume the two n…

You are given two non-empty linked lists representing two non-negative integers. The digits are stored in reverse order and each of their nodes contain a single digit. Add the two numbers and return it as a linked list. You may assume the two numbers…

Description: You are given two non-empty linked lists representing two non-negative integers. The digits are stored in reverse order and each of their nodes contain a single digit. Add the two numbers and return it as a linked list. You may assume th…

Leetcode春季打卡活动 第二题:206. 反转链表 206. 反转链表 Talk is cheap . Show me the code . /** * Definition for singly-linked list. * struct ListNode { * int val; * ListNode *next; * ListNode(int x) : val(x), next(NULL) {} * }; */ class Solution { public: ListNode* h…

这是悦乐书的第320次更新,第341篇原创 01 看题和准备 今天介绍的是LeetCode算法题中Easy级别的第189题(顺位题号是811).像"discuss.leetcode.com"这样的网站域名由各种子域组成.在顶级,我们有"com",在下一级,我们有"leetcode.com",在最低级别,"discuss.leetcode.com".当我们访问像"discuss.leetcode.com"这样…

这是悦乐书的第317次更新,第338篇原创 在开始今天的算法题前,说几句,今天是世界读书日,推荐两本书给大家,<终身成长>和<禅与摩托车维修艺术>,值得好好阅读和反复阅读. 01 看题和准备 今天介绍的是LeetCode算法题中Easy级别的第186题(顺位题号是796).给定两个字符串A和B,在A上进行移位操作,规则是将A最左边的字符移动到最右边去.例如,如果A ='abcde',那么在A上移位一次后,它将是'bcdea'.当且仅当A在A上移位一定次数后可以变为B时返回True.…

这是悦乐书的第316次更新,第337篇原创 01 看题和准备 今天介绍的是LeetCode算法题中Easy级别的第185题(顺位题号是788).如果一个数字经过180度旋转后,变成了一个与原数字不同的数,这样的数被称为好数字.数字中的每一位都必须经过旋转.旋转的规则是:0,1,8这三个数旋转后还是自身,2旋转后变为5,5旋转后变为2,6旋转后变为9,9旋转后变为6,剩下的3,4,7旋转后并不能转成其他数字,是无效的.现在给出正数N,从1到N的好数字一共有多少个?例如: 输入:10 输出:4 说明…