集合结合《泛型》，可以有 List集合——工具类collections Set集合——工具类collections Map集合 学习集合即是学习遍历方式，包括： 普通for循环 增强for循环 迭代器
多线程多任务看起来同时做很多件事，实际上同一时间只做一件事，将多件事拆散安排在一条时间轴上。 多线程增加并发数量，即分配资源后，使得多个进程(运行中的程序)同时进行。 真正的多线程是多核CPU带来的，模拟的多线程是高速CPU快速切换带来的。 线程是独立的执行过程； main()为主线程，是系统的入口； 在一个进程中，如果开辟了多个进程，线程的运行由调度器安排调度。调度器是与操作系统相关的，先后顺序是不能人为干预的； 对同一份资源进行操作时，会存在资源抢夺的问题，需要加入并发控制； 线程会带来额外的开销，如CPU的调度时间，并控制开销； 每个线程在自己的工作内存交互，内存控制不当会造成数据不一致。 线程的创建方式： 集成Thread类 实现Runnable接口 实现Cellable接口
在kuangstudy.com学习Java系列课程的课程记录。本文为Java基础的查漏补缺。 安装环境使用JDK1.8，在Windows系统里配置到Environment文件夹中，并添加path路径 JAVA_HOME ：路径 并将%JAVA_HOME%\bin以及%JAVA_HOME%\jre\bin添加到系统变量 在终端输入java -version 安装软件软件采用IDEA，可以开发Java、Android及其他。在 https://www.jetbrains.com/ 下载2020.1版即可。 软件使用简写使用：psvm召唤 public static void main{} 基础语法注释单行注释//balabala 多行注释/* bala bala Bala */ 文档注释/** *balabala *balabala *@Descripti...
Abstract Convolutional Neural Network (CNN) is a pattern recognition method combining artificial neural network and deep learning theory. CNN’s parallel architecture is the foundation and core of CNN’s overall computing architecture. Field programmable gate array (FPGA) can give full play to the parallel characteristics of convolutional neural network. The neural network is realized by using t...
Binocular stereo vision is the research focus in the field of computer vision. Usually, two identical cameras are used to obtain two digital images of the surrounding objects from different angles, and the 3D geometric information of the objects is recovered based on the parallax principle to reconstruct the 3D shape and position of the surrounding objects.Based on the binocular stereo system,...
Competition Qualification Selection The school of electronic engineering and optoelectronic technology(EO) of Nanjing University of Science and Technology(NJUST) selected the students. The title of the selection is robot car which can identify and avoid obstacles. We use the embedded development board based on STM32-M4, combined with linear motor car and monocular camera to complete this pro...
A digital controller for single-inductor dual-output switching converter with low cross regulation Supervisor of this research is Lecture Daying Sun. Circuit Structure The whole structure of this research uses the digital controller’s SIDO buck converter. A/D converter(ADC) was used to sample the output voltage and inductance current of the two output branches and several PWM driven transistor...
Competition Questions:2017 ICM Problem E: Sustainable CitiesNeeded! Background:Many communities areimplementing smart growth initiatives in an effort to consider long range,sustainable planning goals. “Smart growth is about helping every town and citybecome a more economically prosperous, socially equitable, and environmentallysustainable place to live.”[2] Smart growth focuses on building...