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java foundation - 3if statement programming problem if judgment statement Topic 1 (training) Li Lei wants to buy a new mobile phone with a value of 7988 yuan. Her old mobile phone can sell for 1500 yuan in the second-hand market, and the mobile phone store offers the discount of exchanging the old for the new. If she gives her old mobile pho ...

I Process concept 1. The difference between process and procedure? Uncompiled program ------------ executable program Program: a pile of programs to be executed GCC hello C - O hello (program is a static data) script Process: only when the program is loaded into the CPU and occupies resources, it can form a truly dynamic process by reacting t ...

1, Encapsulation Encapsulation: it is the hiding and modularization of information. It is a method to separate the interface from the implementation. In the study of computer language, we have encapsulated data and function. Object encapsulation encapsulates the data and its operations into a whole object, so that the program can access or mod ...

Step 1: configure pom file, and configure mybatis and database related dependencies Here, mybatis uses version 3.4.5. Note: mybatis 3 @ Mapper annotation is only supported for versions above 4.0 Relevant dependency codes are as follows: <dependency> <groupId>org.mybatis</groupId> <artifactId> ...

In this tutorial, we will learn how to deploy server functionality next to the front-end application and create an API to generate images and get metadata from links. With serverless functionality, developers can create and implement modern features and functions in their applications without the pain of setting up and managing back-end server ...

Original link: http://tecdat.cn/?p=6663In this example, the neural network is used to predict the power consumption of citizens' offices using data from April 2011 to February 2013.Daily data is created by totaling the consumption of 15 minute intervals provided each day.Introduction to LSTMLSTM (or short-term memory artificial neural network) ...

16.Spring transactions 1. Transaction control in spring Spring's transaction control can be divided into programmatic transaction control and declarative transaction control. Programming Developers directly couple the transaction code and business code, which is not needed in actual development. Declarative Developers use configuration to ...

1. Server configuration 1. Reset the server password After purchasing a server (take Alibaba cloud as an example), a service will be generated in the server list. Click the server to enter server management (the interface may be different for different Linux versions). The default server initialization password is empty, so you need to set a ...

Crop hybridization Title Description Crop hybridization is an important step in crop cultivation. There are ＾ crops (numbered ＾ 1 ＾ to ＾ n) known, and the time from sowing to maturity of ＾ i ＾ crop is ＾ Ti. Crops can be hybridized in pairs, and the longer of the two kinds of time is taken as the hybridization time. If the planting time ...

Preorder traversal of binary tree Title Description Give you the root node of the binary tree, root, and return the preorder traversal of its node value. Example 1: Input: root = [1,null,2,3] Output:[1,2,3] Example 2: Input: root = [] Output:[] Example 3: Input: root = [1] Output:[1] Method 1: recursion For tree traversal, recursive method ...