C++08 (Classes and Objects)

Classes and Objects Differences between 0.C/C++. 0.1.C Language Structures 0.2 Linking variables to functions 1. Classes and Objects 1.1 oop Thought (Thought of Object-Oriented Language) 1.2 Write a human Three Features of 2.C++. 2.1 Packaging (should be visible to you, should not be invisible t ...

Posted by sunnypal on Sat, 20 Jun 2020 03:39:27 +0200

[array and string] Introduction to 2D array

catalog 2, Introduction to 2D array 2.1 rotation matrix 2.2 zero matrix 2.3 diagonal traversal ☆ 2, Introduction to 2D array 2.1 rotation matrix 2.1.1 problem description 2.1.2 solution process Method 1: no additional space is allowed, so you can only operate in place. In other w ...

Posted by poelinca on Fri, 19 Jun 2020 13:33:37 +0200

Company real question brush record Python

Article catalog Greedy Algorithm Dictionary order Huawei test vivo advance approval Sort + two pointer search to flash back Greedy Algorithm Resource allocation, maximizing revenue Xiaoq's company recently received m tasks, the i task needs xi time to complete, and the difficulty level is yi. ...

Posted by myharshdesigner on Thu, 18 Jun 2020 06:28:06 +0200

java basic review common classes

I java.lang Class in package does not need to import package 1. Features:    java.lang Package is the core of Java language, which provides the basic classes in Java. Including basic Object Class, Class class, String Class, basic type wrapper Class, basic math Class and other basic classes. 2. 8 basic types of initialization default va ...

Posted by manamino on Thu, 18 Jun 2020 06:01:02 +0200

python learning summary day8 tuples, dictionaries, sets

python learning summary day8 tuples, dictionaries, sets 1, Tuple 1. Tuple: a tuple is an immutable list and a container type of data. It does not support addition, deletion and modification, but only supports query (subscript operation). 1) Empty tuple: () - > tuple 2) Tuple of single element ...

Posted by NightCoder on Thu, 18 Jun 2020 04:29:39 +0200

How does Django use snowflake to generate a primary key instead of automatically?

Before, ID was implemented with auto increment. Now I want to use Snowflake algorithm to generate primary key. What changes should I make? catalog Background Implementation plan Scenario 1 - add primary key manually Scenario 2 - override save() method Scenario 3 - using pre in Django Signals_ save() ...

Posted by ivi on Wed, 17 Jun 2020 08:11:54 +0200

How is thread reuse in a Java thread pool implemented?

A few days ago, a group member of the technical group asked a question about the thread pool, as shown in the figure: So let's talk about this. In a thread pool, threads read tasks from workQueue to execute. The smallest unit of execution is Worker, which implements the Runnable interface and overrides the run method.The method is to let eac ...

Posted by denniston on Tue, 16 Jun 2020 18:25:54 +0200

HTML5. Notes. Cases

HTML 1, html introduction 1. What is HTML? HTML:hyper text Makrup language hypertext markup language is composed of various tags, which are used to make web pages and tell browsers how to display pages 2. Function Make web pages, control the display of web pages and content Insert picture, musi ...

Posted by gruzaw on Tue, 16 Jun 2020 10:07:59 +0200

Difference between locking and fence and applicable scenarios

Opening I believe that little partners know more or less about these two words. They are common thread communication tools in concurrent programming. The two are very similar, but they are different, which leads to a lot of confusion among many small partners, including me: what is the difference between them, and what scenarios are they applic ...

Posted by rsanc on Tue, 16 Jun 2020 04:34:12 +0200

Part 1 Basic Algorithms (Enhancement) --Chapter 3 Deep search pruning techniques 1445: Flat painting

1445: Flat Painting Time limit: 1000 ms memory limit: 65536 KB Number of submissions: 565 passes: 296 [Title Description] CE Digital has developed a product called Automatic Color Machine (APM).It can use predefined colors to color a flat panel of rectangles of different sizes that do not cover each oth ...

Posted by JehovahsWord on Tue, 16 Jun 2020 04:03:38 +0200