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Title address: https://www.acwing.com/problem/content/description/1127/ Farmer John's farm has many pastoral areas, and some paths connect some specific pastoral areas. A pastoral area with all the connections is called a pasture. But for now, you can see that at least two pastoral areas are not connected. Now, John wants to add a path to the ...

English| https://javascript.plainenglish.io/3-weird-javascript-class-tricks-that-could-be-useful-c5a78144d574Yang XiaoaiI like to try new things, and JavaScript has many strange and hidden gems, which is always fun to learn. Some are just vulnerabilities in the API, while others are intentional or unintentional accidents. Either way, as long as ...

Original text: https://circuitdigest.com/microcontroller-projects/arduino-smart-blind-stick Use Arduino's smart blind rod ARDUINO project Pass by** Aswinth Raj **January 8, 2018 Have you heard of Hugh Herr? He is a famous American rock climber who broke the limitation of disability. He firmly believes that technology can help disabled peop ...

Lesson 69 search algorithm 1. Static search and dynamic search Static lookup: The data set is stable, and there is no need to add or delete elements. Dynamic lookup: In the process of finding data sets, you need to add or delete elements at the same time. 2. Search structure For static lookups: We might as well ...

Sequential structure The basic structure of Java is sequential structure. Unless otherwise specified, it will be executed sentence by sentence in order Sequential structure is the simplest algorithm structure Between statements and between boxes, it is carried out from top to bottom. It is executed by several in turn Select stru ...

preface: In the process of successfully calling Gaode map api, I really encountered many problems. I feel that I have encountered all kinds of problems, such as importing jar package and For example, I found many conflicts between the two versions of grad.sok, but I did not try to resolve the conflicts between the two versions of grad.sok when ...

java serialization, read this article is enough 1, Meaning, meaning and usage scenario of serialization2, Serialization implementation1,Serializable1.1 ordinary serialization1.2 members are serialization of references1.3 mechanism of serializing the same object multiple times1.4 potential problems of Java serialization algorithm1.5 optional cu ...

original: https://circuitdigest.com/microcontroller-projects/diy-gesture-controlled-arduino-air-mouse-using-accelerometer Arduino based air mouse for DIY gesture control using accelerometer ARDUINO project Pass by** Madhav **Revised on June 24, 2019 Once wanted to know how our world is moving towards immersive reality. We have been lookin ...

ElasticSearch getting started notes After downloading and installing ElasticSearch on the Internet, enter the directory, open cmd and run it on Windows bin\elasticsearch.bat Running on linux or other systems bin\elasticsearch If curl has been installed, to test whether ES is successfully installed, you can run the command on another cmd co ...

K8s - Catalog 1, kubernetes core technology Helm 1. Helm introduction Application objects on K8S are composed of specific resource descriptions, including deployment, service, etc. They are saved in their own files or written to a configuration file. Then kubectl apply – f is deployed. If the application consists of only one ...