Article Introduction：PHP algorithm design ideas: How to achieve an efficient solution to the topological sorting problem? Topological sorting is a classic problem in graph theory. Its main goal is to sort a directed acyclic graph (DAG) so that all vertices in the graph satisfy the condition that the in-degree is less than or equal to the out-degree. Topological sorting is widely used in many scenarios, such as task scheduling, compiler design, etc. In this article, an efficient solution for topological sorting using PHP language will be introduced. First, we will discuss the basic principles of topological sorting algorithm, and then give specific codes.

2023-09-19 comment 0  744

Article Introduction：How to use Java to implement topological sorting algorithm Topological sorting is a commonly used algorithm in graph theory, used to sort the vertices of a Directed Acyclic Graph (DAG for short). Topological sorting can be used to solve problems such as dependencies or task scheduling. In this article, we will introduce how to use Java to implement the topological sorting algorithm and give corresponding code examples. The implementation idea of ​​topological sorting is as follows: First, we need to define a data structure of a directed graph, which can be done using an adjacency list.

2023-09-19 comment 0  1363

Article Introduction：Research on the application scenarios and implementation methods of topological sorting algorithm in PHP In computer science, topological sorting is an algorithm for sorting nodes in a directed acyclic graph. This algorithm can be used to solve problems in some practical scenarios, such as task scheduling, dependency analysis, etc. This article will explore the application scenarios of topological sorting algorithm in PHP and give specific implementation methods and code examples. 1. Application scenarios of topological sorting In many practical scenarios, we often face the need to sort a set of tasks or events. One of these tasks or events

2023-09-19 comment 0  1159

Article Introduction：Method: 1. Find a node in the graph with an in-degree of 0, remove this node from the graph and add it to the sequence E; 2. Remove all edges associated with the node found in 1 from the graph; 3. Repeat steps 1 and 2 until all nodes in the graph are removed or a node with an in-degree of 0 cannot be found.

2021-07-02 comment 0  3277

Article Introduction：How to write a topological sorting algorithm using PHP Topological sorting is an algorithm for sorting directed acyclic graphs (DAGs). Its principle is to sort the nodes in the graph according to dependencies to ensure that the directions of all edges in the sorting results are consistent. In actual development, topological sorting is often used to solve problems such as task scheduling and dependency analysis. This article will introduce how to write a topological sorting algorithm using PHP, with code examples. Algorithm idea: Create an in-degree array to save the in-degree of each node (that is, how many nodes point to this node

2023-07-09 comment 0  858

Article Introduction：Paving the way for directed graphs: The algorithm we are going to talk about in this section involves directed graphs, so I will first explain some concepts of directed graphs and will not explain them later in the article. First, the nodes of the directed graph are connected by lines with arrows. Nodes have the concepts of out-degree and in-degree. The out-degree of the node pointed by the tail of the connection is increased by 1, and the in-degree of the node pointed by the arrow at the head of the connection is increased by 1. Look at the following example, A has an in-degree of 0 and an out-degree of 2, B has an in-degree of 1 and an out-degree of 1, C has an in-degree of 1 and an out-degree of 1, D has an in-degree of 2 and an out-degree is 0. Adjacency list: The adjacency list is an effective way to store the graph structure. As shown in the figure below, the node array on the left stores all the nodes in the graph, and the adjacency list on the right stores the adjacent nodes of the node. Introduction In this article we are going to talk about topological sorting

2023-06-01 comment 0  1309

Article Introduction：Among computer operating systems, WIN7 system is a very classic computer operating system, so how to install win7 system? The editor below will introduce in detail how to install the win7 system on your computer. 1. First download the Xiaoyu system and reinstall the system software on your desktop computer. 2. Select the win7 system and click "Install this system". 3. Then start downloading the image of the win7 system. 4. After downloading, deploy the environment, and then click Restart Now after completion. 5. After restarting the computer, the Windows Manager page will appear. We choose the second one. 6. Return to the computer pe interface to continue the installation. 7. After completion, restart the computer. 8. Finally come to the desktop and the system installation is completed. One-click installation of win7 system

2023-07-16 comment 0  1244

Article Introduction：:This article mainly introduces php-insertion sort. Students who are interested in PHP tutorials can refer to it.

2016-08-08 comment 0  1102

Article Introduction：charles captures requests in eclipse

2016-12-02 comment 0  1735

Article Introduction：Illustrated method to find the path of the PHP configuration file php.ini. Graphical method to find the path of the PHP configuration file php.ini. Recently, some bloggers asked in which directory php.ini exists? Or why does it not take effect after modifying php.ini? Based on the above two questions,

2016-07-13 comment 0  846

Article Introduction：IT House reported on July 14 that Huawei recently released new commercial AI storage products "OceanStorA310 deep learning data lake storage" and "FusionCubeA3000 training/pushing hyper-converged all-in-one machine". Officials said that "these two products can train basic AI models." , industry model training, and segmented scenario model training and inference provide new momentum." ▲ Picture source Huawei IT Home compiled and summarized: OceanStorA310 deep learning data lake storage is mainly oriented to basic/industry large model data lake scenarios to achieve data regression from Massive data management in the entire AI process from collection and preprocessing to model training and inference application. Officially stated that OceanStorA310 single frame 5U supports the industry’s highest 400GB/s

2023-07-16 comment 0  1590

Article Introduction：The difference between the exec function and the shell_exec function in PHP, execshell_exec. The difference between the exec function and the shell_exec function in PHP. Both execshell_exec functions execute Linux command functions. The difference is that the return results are different. exec can only get the last line number.

2016-07-13 comment 0  1094

Article Introduction：Nginx server combines Nginx and tomcat to access jsp

2016-12-02 comment 0  1848

Article Introduction：:This article mainly introduces the PHP function container ing..., students who are interested in PHP tutorials can refer to it.

2016-08-08 comment 0  1141

Article Introduction：Interface usage of PHP object-oriented programming, PHP object-oriented programming. Interface usage in PHP object-oriented programming, PHP object-oriented programming interface is a very important concept in PHP object-oriented programming. This article explains in more detail in the form of examples

2016-07-13 comment 0  1006

Article Introduction：PHP object-oriented programming and other constant usage examples, sed usage examples. Examples of constant usage in PHP object-oriented programming, examples of sed usage. Class constants are a very important concept in PHP object-oriented programming. A firm grasp of class constants will help further improve

2016-07-13 comment 0  1044

Article Introduction：Java Tutorial—The Difference Between Int and Integer

2016-12-02 comment 0  2019

Article Introduction：Here is a JAVASCRIPT client solution for obtaining URLs with QUESTRING parameters, which is equivalent to ASP's request.querystring and PHP's $_GET

2017-04-24 comment 0  4164

Article Introduction：JavaWeb learning summary_Servlet development

2016-12-02 comment 0  1968

Article Introduction：Examples explain PHP object-oriented polymorphism, examples explain object-oriented. Examples explain object-oriented polymorphism in PHP. Examples explain object-oriented polymorphism. What is polymorphism? Polymorphism is the third feature of object-oriented languages ​​after database abstraction and inheritance. Polymorphism is many

2016-07-13 comment 0  933