Tag: seconds

Understand data structures in seconds-Binary tree 2 (sequential structure implements binary tree)

Tip: After the article is written, the table of contents can be automatically generated. For how to generate it, please refer to the help document on the right. Article directory Preface 1. Function introduction 1.1 Functional statement 2. Detailed introduction of functions 2.1 Binary tree structure 2.2 Binary tree initialization 2.3 Data insertion 2.4 Deletion […]

javascript registration form and verification, then an error message pops up and disappears automatically after 3 seconds

<script type=”text/javascript”> //Get all input elements, input=null cannot be used, because input[‘password’].value needs to be compared with input[‘pwd’].value //You can also input=null; but you need to set the variable var pass=input[‘password’] in the local variable, and then compare var input=document.getElementsByTagName(“input”); var i,len,message; for(i=0,len=input.length-1;i<len;i + + ) {<!– –> switch(input[i].name) {<!– –> case “user”: EventUtil.addHandler(input[i],”blur”,function(event){<!– –> […]

Using Python to automatically play Minesweeper, the intermediate difficulty took 0.74 seconds, breaking the world record

Using Python + OpenCV to realize automatic mine clearance and break the world record, let’s take a look at the effect first. Intermediate – 0.74 seconds 3BV/S=60.81 I believe that many people have known about Minesweeper, a classic game (graphics card test) game (software) for a long time. Many people have heard of Chinese Minesweeper, […]

Inserting 300,000 pieces of data in 13 seconds is the correct way to insert batches!

This article mainly describes the cases and results of large-volume data insertion through MyBatis, JDBC, etc. 300,000 pieces of data are inserted into the database for verification Entity class, mapper and configuration file definition User entity mapper interface mapper.xml file jdbc.properties sqlMapConfig.xml Stud directly without batching Loop insert one by one MyBatis implements inserting 300,000 […]

Deploy a K8S cluster in 180 seconds through Sealos

Deploy a K8S cluster in 180 seconds through Sealos 1. Host preparation 1.1 Host operating system description Serial number Operating system and version Remarks 1 CentOS7u9 1.2 Host hardware configuration instructions The k8s cluster CPU and memory are at least 2 CPUs and 2G memory respectively, and the hard disk is recommended to be 100G […]

awk command in linux (most comprehensive and understandable in seconds)

Table of contents 1: awk command in linux 1. Introduction to awk command 2.Awk function 3.Awk syntax format 4. Analyze how to use awk 5. Parameters 6.awk life cycle 2: Predefined variables in awk Three: Execution process of awk running processing rules Four: Functions in awk Five: Positioning in awk Six: Comparison expression (matching content […]

Jemeter stress test [20,000 users make 5 requests per second and process the request within 30 seconds]

Article directory test code 5000 users in 30 seconds, each user 5 requests per second 15,000 users in 30 seconds, each user making 5 requests per second Constant debugging Two machines simultaneously stress tested 10,000 threads. Within 30 seconds, the loop was repeated 5 times to achieve 20,000 concurrent threads. Recently, I participated in the […]