Programmer Think

inherit Java has three main object-oriented features: encapsulation, inheritance, polymorphism, inheritance is a prerequisite for polymorphism, there is no polymorphism without inheritance.Inheritance refers to the abstraction of attributes common to several classes into a class that, when defining a ...

A 15 and 20 Portal Simulation direct up #include<bits/stdc++.h> using namespace std; int main() { int t; scanf("%d",&t); while(t--) { int a1,b1,c1; scanf("%d%d%d",&a1,&b1,&c1); int a2,b2,c2; scanf("%d%d%d",&a2,&b2,&c2); ...

Status of thread pool First let's look at some variables defined in the ThreadPoolExecutor class: volatile int runState; //volatile is a type modifier. //volatile is used as an instruction key to ensure that this instruction will not be omitted due to compiler optimization. static final int RUNNING ...

  Background: Today's network services are mostly distributed cluster deployment, and the adopted architecture is also service-oriented architecture (SOA). Everyone is striving in the field of service governance. No, today's Nacos is also a product of the field of service governance. Nacos is an ex ...

Using NatureDQN to play and make bricks target Try the first edition The foundation of building bricks Preprocessing Image preprocessing State preprocessing Network design Second version attempt Third version attempt Code directory: target Playing brick is a relatively complex game in gym ga ...

What is AQS? AQS is an abstract synchronization framework, which can be used to implement a state dependent synchronizer. Provides a framework for implementing blocking locks and related synchronizers (semaphores, events, etc) that rely on first-in-first-out (FIFO) wait queues. This class is designed to be a useful basis for most kinds of syn ...

1. Introduction to sklearn Scikit learn (sklearn) is a common third-party module in machine learning. It encapsulates common machine learning methods, including regression, dimension reduction, classification, clustering and other methods. When we face the problem of machine learning, we can choose the ...

Preface We have an operating system to run user programs. The running of programs needs to transfer processes, so process management is the heart of all operating systems. In fact, a process is the result of current events in the executing program code. Process understanding Process: A process is a ...

Data Structure-Cyclic Queue (C Language) To learn circular queues, first understand the queues.A queue is a first-in-first-out linear table that allows insertion only at one segment of the table and deletion of elements at the other end.The end allowed to insert in the queue is the end of the queue, ...

leetcode brush inscription -- > 18 problem solving method (python analysis) Definition of title Solving problems 1. Use dichotomy 2. Optimization by dichotomy 3. Use recursive thinking 4. Continue to optimize the dichotomy Realization Definition of title Given a n array of N integers nums a ...