Application of stack -- arithmetic expression calculation (infix to suffix, suffix calculation)

Application of stack -- arithmetic expression calculation (infix to suffix, suffix calculation) Problem introduction: arithmetic expression calculation is a basic problem in compiling system, and its implementation method is a typical application of stack. Any arithmetic expression is made up of opera ...

Posted on Thu, 04 Jun 2020 20:29:34 -0700 by pbdude23

Organization code and unified social credit code verification rules and java verification tool class

Organization code Edit coding rule 1. The national organization code consists of eight digit (or capital Latin letter) body code and one digit (or capital Latin letter) verification code. The ontology code adopts the sequential coding method of series (i.e. partition segment). The check code is calcula ...

Posted on Thu, 04 Jun 2020 19:09:11 -0700 by pieychpi

Fluent Container component - Container

Into the Flutter As the most popular cross platform technology framework, Flutter is being used by more and more developers and organizations, and it is completely free and open source. First, let's take a look at the Flutter plug-in. What is Flutter? Flutter is a set of open-source cross platform U ...

Posted on Thu, 04 Jun 2020 18:55:26 -0700 by Sinister747

Kafka cluster construction and necessary knowledge and meeting

Kafka cluster deployment and startup In this article, we will start by demonstrating how to build a Kafka cluster, and then briefly introduce some basic knowledge points about Kafka cluster. However, this paper only introduces the cluster, and does not explain the basic concept of Kafka too much. It is assumed that the reader has some basic kn ...

Posted on Thu, 04 Jun 2020 18:21:26 -0700 by Stonewall

Shiro implements RememberMe functionality

This article describes and implements the RememberMe function in Shiro. 1 introduce Shiron provides the ability to remember me, such as when visiting websites like Taobao, closing the browser and remembering who you are the next time you open it, and accessing it without having to sign in again the next time you visit. The basic process is as ...

Posted on Thu, 04 Jun 2020 15:23:18 -0700 by V_dirt_God

java socket programming for client and server to receive information

java socket programming for client and server to receive information #Learning Notes/Programming/socket tcp/IP Four-Layer Model Link Layer: Data Physical Layer, Optical Fiber, Network Cable, etc. Network layer: Used to group transmitted data and assign it to the appropriate computer or port Tran ...

Posted on Thu, 04 Jun 2020 12:45:15 -0700 by anf.etienne

Introduction level use and partial parsing of xUitls3 framework

Article Directory Getting Started with xUtils3 and Parsing Part Introduction to xUtils Practice section: Set up initialization environment 1.Gradle builds with the following dependencies: 2. Join the required permissions: 3. Initialize (remember to initialize in application, which is inconsistent ...

Posted on Thu, 04 Jun 2020 12:02:28 -0700 by ShugNorris

Hadoop example: calculating the total amount of stock transactions

The optional Cloud Computing and Big Data Overview final job requires a stock case study with the following specific requirements: Case: Attachment Document TextData.txtThe file (shown in Fig. 1) shows the trading data of the daily stocks from 2011-1 to today, the trading data of the daily stocks, the t ...

Posted on Thu, 04 Jun 2020 11:54:49 -0700 by poppy

Play Redis - Introduction to Redis

Play Redis - Introduction to Redis Introduction to Redis 1. Overview of Redis 2. Redis usage scenarios 3. Basic Types Four SpringBoot Integrated Redis (1) Introducing dependencies (2) yml configuration (3) Injection Template starts (4) Write Config classes (5) Writing service classes Introdu ...

Posted on Thu, 04 Jun 2020 11:54:06 -0700 by ~J~R~R

gpg decryption - Disable interactive password entry

Background description gpg decryption will pop up the following window by default. Please enter the password, but there is a problem in script automation lqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqk x Enter passphrase x x x x ...

Posted on Thu, 04 Jun 2020 11:28:59 -0700 by liquidd