life is tough，so are you

摘要： Design a simplified version of Twitter where users can post tweets, follow/unfollow another user and is able to see the 10 most recent tweets in the u 阅读全文

摘要： 196. Delete Duplicate Emails 196. Delete Duplicate Emails Write a SQL query to delete all duplicate email entries in a table named Person, keeping onl 阅读全文

摘要： 192. Word Frequency QuestionEditorial Solution My Submissions 192. Word Frequency QuestionEditorial Solution My Submissions QuestionEditorial Solution 阅读全文

摘要： Given an array of integers, return indices of the two numbers such that they add up to a specific target. You may assume that each input would have ex 阅读全文

摘要： Given a positive integer, return its corresponding column title as appear in an Excel sheet. For example: 1 -> A 2 -> B 3 -> C ... 26 -> Z 27 -> AA 28 阅读全文

摘要： You are given two jugs with capacities x and y litres. There is an infinite amount of water supply available. You need to determine whether it is poss 阅读全文

摘要： 题目链接 https://leetcode.com/problems/remove-duplicates-from-sorted-array-ii/ 题目原文 Follow up for "Remove Duplicates":What if duplicates are allowed at mo 阅读全文

摘要： 239. Sliding Window Maximum 239. Sliding Window Maximum Given an array nums, there is a sliding window of size k which is moving from the very left of 阅读全文

摘要： 把 #hhhh"hhhh.lab"我是好."hhjkkk.lab"我爱你. 等等 这种格式的文件变成 0 1 <s>1 2 怎么无法接通啊2 1002 <s>1 3 我是3 1002 <s> 等等1002 的格式 思路：提取"hhhh.lab"的行数，‘.’的行数分别填入list1，list2 再处 阅读全文

摘要： wisted 是一个完全事件驱动的网络框架。 它允许你使用和开发完全异步的网络应用程序和协议。 在写本书的时候，它还不是 Python 标准库的一部分，要使用它，你必需另外下载并安装它（在本章 最后能找到链接）。它为你创建一个完整系统提供了很大的帮助。系统中可以有：网络协议，线程， 安全和认证，聊天 阅读全文