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Data structure quick sort
Fast sorting is the upgrade of bubble sorting, which belongs to exchange sorting. The basic idea of fast sorting is: the records to be sorted are div...
R script reading summary Excel table data
It mainly uses xlsx and rJava package, opens Excel file, reads data of each table, and writes it to summary table. The following figure shows the ori...
Binary tree traversal algorithm
Preorder traversal Idea: first root node - > left subtree - > right subtree;The binary tree is as follows: /** * TreeSearch Brief description *...
Things about Android layoutparams
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The stored procedure for generating time dimension in mysql (stored procedure example)
This paper mainly records the problem of generating time dimension in the process of BI and data analysis. It is also a basic example of mysql stored ...
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For the front-end projects created by using Vue cli scaffolding, compiling and publishing are almost necessary operations, some of which only need sec...
Get the weight or feature of a layer in the middle of Python
Get the weight or feature of a layer in the middle of Python Question: how to deal with a trained network model that wants to know the weight of a ce...
[FJOI2015] division of line tree of Mars store problem
Each inquiry of this question has two intervals, one is time interval and the other is store number interval. Each purchase is also related to the ti...
Verification code algorithm
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Handwritten code of front-end written test
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django development - building distributed (multi node) task queue with cellery
Today, I'll show you how to use cellery to build a task queue with two nodes in django project (one master node and one child node; the master no...
Python automatic operation and maintenance development: basic Mysql Database Paging and paging in Python code
Back end database paging is implemented according to limit The first writing method: limit the number of pages offset start position select id,name,s...
Use form create to dynamically generate vue components, supporting json format
[github] | [description document] Example let rule = [ { type:'row', children:[ { type:'i-col', props:{ span:12 }, children:[ form...
Luogu P3346 [ZJOI2015] fantasy land favored by gods (generalized suffix automata)
meaning of the title Title Link Sol Board questions of generalized SAM. First, if the leaf node is no more than 20, then the subtree whose root is eac...
Atcoder starter contest 115-d problem solving Report
subject https://atcoder.jp/contests/abc115/tasks/abc115_d thinking This problem is a delicate recursive one. Hamburgers of Level-0, level-1 and level...
Reconstruction of P4198 building in Luogu (line section tree)
meaning of the title Title Link Sol Don't ask me why I sent it twice just to cheat traffic The line tree method of this question is very wonderfu...
Differences between CountDownLatch and join
When the ants were asked this question, they really couldn't imagine the difference when they realized the same function. When they came back to...
Troubleshooting of Oracle with high resource consumption but execution = 0
During the daily inspection of a customer's production environment database, it was found that the AWR report had a high resource consumption but...
Extraction of light bar centerline Steger algorithm [Matlab]
Steger algorithm is based on Hessian matrix, which can realize the center of light stripe Sub-pixel Precision positioning: Firstly, the normal direct...
Configuration of axios in nuxt
Need npm axios? At the beginning, I thought that npm axios was needed, just like the common vue SPA development, and this way could work. But it is n...
[C + +] 42 μ type conversion function
Question:Can class types be converted to normal types? #include <iostream> using namespace std; class Test { }; int main() { Test t; int i = 0; ...
Week 11 item 2 -- solving algebraic expression with binary tree
[item - solving algebraic expression with binary tree]The binary tree is used to represent the algebraic expression. Each branch node of the tree rep...
05 "filter to solve the Chinese scrambling of the request (inherited from HttpServletRequestWrapper)
1) create a new EncodingFilter Create a new filter for all requests in the past. The decoding method used to process the request parameters is UTF-8,...
Write custom parameter validation
This article has been published for more than two months since I left my previous company two months ago (the reason may be at the end of the year, th...
Spring cloud microservices Zuul cross domain issues
At present, the project structure is VUE as the front-end, and the back-end uses the micro service architecture. When developing, the front-end needs ...
nginx deploy thinkphp and laravel
Recently, bloggers deployed a TP5 project they practiced under Centos+Nginx environment. Some problems were encountered in the process, but the probl...
Implementation of paging query in weUI
This paper introduces the implementation of h5 paging query in mobile terminal 1. front end html Front end implementation based on weui style library ...
layui-v2.4.5 compatibility tuning
It has been written in the community of layui, but the community editor is really not good. Write it again here, just to consolidate it table.js Descr...
Nginx learning notes virtual machine host
Virtual host web service publishing needs to meet three preconditions: IP, PORT and domain name; A web server can only publish one web by default; In...
A detailed explanation of Z-arrangement (C + +)
A detailed explanation of the problem of zigzag arrangement (C + +): Problem Description: given a matrix matrix, output the content of matrix after Z-...