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preface In the use of maps, especially in navigation scenes, GPS track recording is very necessary and useful. This article will share the track recording part under Android system. system architecture A GPS track recording system is mainly divided into three parts: start recording, record GPS positioning, end recording and storage, as sh ...

Longest common ascending subsequence (LCIS) algorithm and Optimization for dynamic programming Examples Title portal describe Given two integer sequences, write a program to find their longest rising common subsequence. When the following conditions are met, we will sequence S1, S2, SN is called sequence A1, A2, Ascending subsequence of AM ...

Welcome to my GitHubhttps://github.com/zq2599/blog_demosContent: classification and summary of all original articles and supporting source code, involving Java, Docker, Kubernetes, DevOPS, etc;Overview of this articleThis article is the sixth article of "camera practice of JavaCV" JavaCV camera practice 3: saving as mp4 file In this a ...

Steps for using the Spring framework Join dependencyCreate class: interface, implementation class and class without interfaceCreate a Spring configuration file and declare it with < bean >Using the object in the container, use the method getBean() of ApplicationContext IOC: control reversal The implementation of ioc technology uses di ...

Original address: Netease cloud music iOS14 widget practical manual preface Apple released a widget kit on this year's WWDC20, which supports the display of dynamic information and personalized content on iOS and iPad OS home screens. With the addition of iOS system application drawer, Apple has always been conservative about the home screen, ...

Write before: Greedy snake, I believe everyone has played it. After learning the C language, I also want to write a greedy Snake game myself. Then I checked some materials. Finally, based on a video of station B, I added my own thinking, design and improvement, and created my own greedy Snake game, which I share with you here. (original vide ...

python iterator and generator, decorator The iterator object is accessed from the first element of the collection until all the elements are accessed. Iterators have two basic methods: iter() and next(). String, list, or tuple objects can be used to create iterators: list1=[1,2,3] s=iter(list1) # Create iterator object print(next(s)) # The ne ...

Preparation conditions 1. The USB flash disk x2 cannot be too small, and it is better to use high speed U disk 1, make PE disk} Chinese Cabbage http://www.winbaicai.com/ Select installed UEFI # fool installation U SB flash disk 2, make Clover startup disk https://blog.daliansky.net/ Black fruit soldiers find the right image Download the E ...

Hungry Chinese style: class is initialized when loading. There is no problem of concurrent access and there will be a waste of resourcesLazy type: delay loading and instantiate the object only when it is used. There is a problem of concurrent access and high resource utilizationDouble detection lock: the synchronized keyword is used to ...

1, Lambda expression 1. Basic syntax of lambda expression        java 8 introduces a new operator "- >", the arrow operator / lambda operator, and the arrow operator divides the lambda expression into two parts: Left: of lambda parameter On the right side of the list: the functions to be performed in lambda, that is, lambda ...