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Introduction to Quick Sorting Quicksort (English: Quicksort), also known as partition-exchange sort, divides the sorted data into two separate parts by one-time sorting. All the data in one part are smaller than all the data in the other part. Then, according to this method, the two parts of the data are sorted quickly, and the whole sorting p ...

Python Fundamentals A programming language What is a programming language?The above-mentioned expression that can be recognized by computer is programming language, which is the medium of communication, and programming language is the medium of communication between programmer and computer. In the world of programming, computers are more like ...

This article mainly describes how to use PHPExcel to export Excel files in thinkPHP. It is a summary of many other people's posts after the blogger has practiced, which can be used for personal testing. thinkPHP version is 3.2.0. My blog: Mine-MuYan Welcome to harassment. ThinkPHP Exports Excel Files with PHPExcle. Dead work Download and conf ...

Requirements: The mouse hover shows what happened this month. Events used are: onmouseover, onmouseout (the more silly method), the first time I think of this silly method. Moreover, display ing is not used, so it's a wonderful thing to make. However, my sister is a very good person, so she gave me some ideas, and today after reading the sourc ...

Preface Generally speaking, the sound module is relatively independent in the process of game development. So there will be some editors to assist sound designer in design, and these editors will provide some API s to facilitate integration into the engine. At present, most of the games I've been exposed to are Wwise and FMod. Since Wwise and ...

There are two kinds of times when the server generates thumbnails: 1. Generation when uploading files Advantages: When uploading, the required thumbnails have been generated, and no further judgment is needed when reading, thus reducing the cpu operation. Disadvantage: When the size of thumbnails changes or new size is added, all thumbna ...

References "The Treasure Book of Hacker Attack and Defense Technology - System Actual Warfare" 2nd Edition Original works, typing is not easy, reprint please note Stack buffer overflow has always been the most popular, we understand one of the most thorough security issues. Although stack buffer overflow is one of the most well-kno ...

Transaction usage and code examples in Yii2 Preface In general, we do business logic, will not only be associated with a data table, so we will face transaction problems. Database Transaction refers to a series of operations performed as a single logical unit of work, either completely or completely not. Transaction processing ensures that ...

Introduction to J2SE (III) String, String Buffer, String Builder String can be said to be the most frequently used class in Java, and also the knowledge points that are often asked in interviews. I. Use of String 1. String's immutability /** * The {@code String} class represents character strings. All * string literals in Java programs, such ...

Explain Installation of LNMP environments usually starts with mysql/mariadb installation, followed by nginx installation, followed by php installation. Install dependency packages [root@localhost ~]# yum -y install gcc [root@localhost ~]# yum -y install gcc++ [root@localhost ~]# yum -y install gcc-c++ [root@localhost ~]# yu ...