precalculus mooc

DSA Range, dsarange I recently started school and reviewed the data structure and algorithms. I went to MOOC. This is a question on the Tsinghua oj platform. Question: Range Query) Descriptioin Let S be a set of n integral points on the x-axis. For each given interval [a, B], you are asked to count the points lying inside. Input The first line contains two integers: n (size of S) and m (the number of queries ). The second line enumerates all the n po

similar to redis and MySQL. It is also a database (redis is a non-relational database, mysql is a relational database), so it is also similar, you can also use commands and php operations. You can use more memcached commands on your own.The redis command is much more than what we mentioned above. It is only simple to use here.This blog is basically based on the self-MOOC Network: Exploring the memcache cache at a close distance. If you want to learn

). My configuration file php. ini is under/etc /. [Lsgozj @ localhost phpredis-2.2.4] # vim/etc/php. ini // edit php. ini: Add extension = "redis. so" Save and exitStep 4: restart the apache server to make the configuration take effect. [lsgozj@localhost phpredis-2.2.4]# systemctl restart httpd.service After the restart, check whether the php-redis extension is installed. [Lsgozj @ localhost phpredis-2.2.4] # echo " Enter 127.0.0.1 in the address bar of the browser to view the php extension. If

current Activity and the other is the Application instance of the project. Since the difference is so obvious, their use cases are certainly different, and disorderly use may cause some problems. The following describes the issues that need attention when using Context. 3. Maintain reference When writing some classes, such as tool classes, you may compile them into a singleton method. Most of these tool classes need to access resources, that is, Context participation. In this case, you need to

C program assembly operation mode analysis, assembly Mode Analysis SJTUBEAR Original Works reprinted please indicate the source/"Linux Kernel Analysis" MOOC course http://mooc.study.163.com/course/USTC-1000029000 1. Assembly In the initial phase of the Linux kernel course, the first thing you need to know is how to operate stacks by assembler and assembler. Next we will analyze how the next simple C program is expressed by the assembler program!2. Get

Analyze assembly code to understand how computers work, assembly code to understand computers For reprinted original works of Zhou yuyong, please indicate the sourceLinux Kernel Analysis MOOC course http://mooc.study.163.com/course/USTC-1000029000 Decompiling C code into assembly code to analyze how the computer works.Below is the simplified assembly code for compiling C code into assembly code 1g: 2 pushl % ebp 3 movl % esp, % ebp 4 movl 8 (% ebp)

the cursor leaves the text box (that is, when the focus is lost), The onblur event is triggered and the Function message () is called (). Running result: Content Selection event (onselect) Selected event. When the text in the text box or text field is selected, the onselect event is triggered and the called program is executed. The following code triggers the onselect event and calls the function message () when the text in the user text box is selected (). Running result: Onchange) The onch

" is capable of chatting intelligently ...... Keywords: intelligent chat API (I chose Baidu to search for the first Turing robot that can open and view the Chinese interface [Click to enter ]) Steps: Register an account on the Turing website to get an API_KEY, as shown below: After obtaining this API_KEY, you can use the API interface provided by Turing to request chat data. The following is an example of the API request: Http://www.tuling123.com/openapi/api? Key =Your API_KEY Info =What you sa

Web Version 2048 game production, web2048 ProductionPreface After work, I participated in the learning video "MOOC 2048 game production". After watching the video intermittently, the game was also created successfully. Because other things did not come and were summarized, the time was too long. When I sorted out the disk, I found the 2048 source code. I thought about it and pushed it to github (which will be posted later ), by the way, I would like t

the mysql directory under cmd. 5. Enter the following command: mysqld-install 6. After the installation is successful, you can start the server and use mysql. After installation, use net start mysql to start mysql. Here, the mysql database is installed. At this time, our user master is root and the password is blank. Therefore, you can enter the following during the first login: Mysql-u root-pPress enter when prompted to enter the password. The above is the installation of the compressed ve

Linux mounting command and linux mounting command 1. mount the CD command mount: mount [-t vfstype] [-o options] device dir Mount [-t file system] [-o Special option] device file name mount point -T specifies the type of the mounted file system, such as ext3, ext4, and iso9660 (file type of the disc) f. -O specify additional mounting options Unmount the disc command umount the device file name or mount point List of special options: Mount # query a mounted device Mount-a # automatic mounting Ba

What are the steps to learn programming in sequence? What are the steps for learning programming in sequence? Learning programming not only requires persistence, but also powerful logic thinking, but also provides a sound way to learn programming. The following section describes how to learn programming, I believe it will be of great help to beginners of programming! Seven stages of learning programming. As follows: Stage 1 You are very happy with the opportunity. You have always wanted to lear

Media query in CSS3, CSS3media In the past few days, I have read in detail the CSS3 of MOOC,Address here: http://www.imooc.com/code/1405 Take notes: 1. media query in css3 1. 10 media query types in CSS3 value device types All devices (familiar) Screen Display (familiar) Print paper or print preview view (familiar) Braille tactile feedback device for blind people Embossed Braille printer Handheld portable device Projection various projection Devices S

commonly used. Note that when top and left values are set, the element is located relative to the latest positioning context, rather than relative to the browser. The positioning context will be discussed below. However, setting the top and left values is not the best solution for locating. For example, to keep element A above Element B, you can set Element B to absolute and adjust the margin value of Element B to make it more efficient. For example: 　　 The information mentioned above is very i

Implementation of a simple time slice rotation multi-channel program kernel codeZhang Han + Original Works reprinted please indicate the source + "Linux Kernel Analysis" MOOC course http://mooc.study.163.com/course/USTC-1000029000First, explain the core code of the program. void __init my_start_kernel(void){int i = 0;while(1){i++;if(i%100000 == 0)printk(KERN_NOTICE "my_start_kernel here %d \n",i);}}This is the startup function of the kernel code. It i

CSS3 learning notes, css3 Learning CSS3 Study Notes for the past two days: MOOC Network Address: http://www.imooc.com/learn/33 Notes: The offset between the X axis and the Y axis can be set to a negative number: Y: Apply the image border-image to the border: Color: Gradient color: Text and Font: Word-wrap: determines whether to disconnect a line when the current line exceeds the boundary of the specified container; Embedded font @ font-face: load the

Partial HTML extraction of webdriver in seleniumDon't tell me that the webdriver in selenium uses driver. page_source. I just don't want to submit all the HTML documents for Soup every time. For the following Forum with the left and right structure, each change in content is really a small part of the entire HTML page. If I want to crawl the comments of all MOOC courses on the entire website, how much useless work will be done!However, Baidu times has

Use jsonp in jquery to implement the search box function, and implement jqueryjsonp. Previous words:I wanted to publish an article last week to imitate Bing search. However, before preparing to write an article, I suddenly learned about ajax technology. Here I also asked my page to get data without manual refresh. However, I found that using the previous method cannot obtain the desired effect. Instead, I changed my computer system a few days ago and lost my previous source code (I had a bad hab

involved in every online course that I could think of and offered countless MOOC courses. I think I did not actually learn anything until I got to the fifth place in a certain month's assessment. These experiences give me the impression that programming is a battle that you will never win. I began to understand that programmers who seem to be normal are actually so gloomy in the past. They have been through too much and have been depressed for too lo

Use a font to draw an Icon in a webpage, and use a font to draw an icon. Step 1: download. On the IcoMoon website, select the font icon and download it. decompress the package and place the fonts folder under the project directory. The fonts folder contains four types of font files:Note: Because the browser supports different types of fonts, to display the font icons in all browsers, you must introduce these font files at the same time. Step 2: Use the @ font-face rule. Customize fonts in style