1. Characters and strings 1. Character: a single character enclosed in single quotes, Such as ‘a’, ‘_’, the corresponding data type is char. 2. String: any number of characters enclosed in double quotes, Such as “abc”, “a”, “”, ” “, the corresponding data type is const char [], which can be stored in the string […]
Tag: bstr
Find the longest repeating substring in a string—-Finding feature vector N method
Article directory topic Question analysis Implementation details Functions and their functions Use parameters and specific functions getmax_N(string P,int* N): Next(string P) main() Program running results Supplement (code explanation of feature vector N) Title Write an algorithm to return the longest repeating substring and its subscript position for a given string str. eg: str=”abcdacdac”, then the […]
Baoshi Document User Manual, and uses abstraction and reflection to create universal abstract classes to save development costs.
Document example 1024 is the best time to write a blog. Don’t say it, don’t say it, I suggest it become a legal holiday. The official website of Baoshi documents: Baoshi official website (@宝思TeamRemember to pay me for advertising) Steps to use the Boucherie certificate Use abstract classes to abstract the steps of obtaining fields, […]
C++ polymorphism, virtual function, pure virtual function, abstract class
The concept of polymorphism Generally speaking, it is a variety of forms. The specific point is to complete a certain behavior. When different objects complete it, different states will be produced. To give a simple example: grabbing a red envelope, each of us only needs to click on the red envelope to grab the amount. […]
[C#] The difference between abstract class and interface
namespace cs {<!– –> public partial class Program {<!– –> public abstract class A {<!– –> // static members // abstract and virtual modifiers are not allowed on fields public static int P1SF; protected internal static int PISF; internal static int InSF; protected static int P2SF; private static int P3SF; // You cannot use abstract […]
Python3———-Abstraction (polymorphism, encapsulation, inheritance, etc.)
The term polymorphism is derived from the Greek word meaning “having many forms.” This roughly means that you can perform operations on a variable even if you don’t know what kind of object it points to, and the behavior of the operation will vary depending on the type (class) of the object. Encapsulation refers to […]
Design pattern – 07.AbstractFactory abstract factory
Article directory Abstract FactoryAbstract Factory Motivation Schema definition Structure Summary of key points Abstract FactoryAbstract Factory The factory method can be regarded as a special case of abstract factory, also called factory method. Motivation In software systems, we are often faced with the creation of “A series of interdependent objects“; at the same time, due […]
Socket abstraction layer and sticky packets
Table of Contents 1. Socket abstraction layer 2. Socket programming based on TCP protocol 2.1 Server socket function 2.2 Client socket functions 2.3 Public-purpose socket functions 2.4 Lock-oriented socket approach 2.5 File-oriented socket functions Socket programming based on TCP protocol (simple) Server client 3. Socket programming + communication + communication cycle Server client 4. Socket […]
Abstract and easy java – mybaties
Pre-workhttp://t.csdnimg.cn/RVvn4 IDEA after completing the pre-production work should look like this Official introduction to mybaties The first step is to open the official website document of mybatieshttps://mybatis.net.cn/getting-started.html In this entry, we will construct a SQL factory from XML The first step is to create an XML file with a random name New → File → […]
The difference between abstract class and interface in Java
In Java object-oriented programming, interfaces and abstract classes are always used. They are both abstractions of things. They have some things in common but also have many differences. Interface In Java, the interface needs to be defined with the interface keyword. It is an abstraction of a behavior and an agreed protocol. Only defining the […]