Programmer Think

Continue with the previous article. If you want to review the content of the previous article, please click here eggjs implementation server request tutorial document-1 3, User details interface development (post request) egg With the example of get request, the post implementation is the same. /app/router/detail.js 'use strict'; modu ...

methodaverage timeWorst timeExtra spacestabilityBubble sortingO(n2)O(n2)O(1)stableSelect sortO(n2)O(n2)O(1)instableInsert sortO(n2)O(n2)O(1)stableCardinality sortO(d(n+r))O(d(n+r))O(d+r)stableShell Sort O(nlogn)O(n2)O(1)instableQuick sortO(nlogn)O(n2)O(nlogn)instableMerge sortO(nlogn)O(nlogn)O(1)stableHeap sortO(nlogn)O(nlogn)O(1)instable 1. In ...

recursion Basic concepts Recursion means that the method calls itself, and different variables are passed in each call. Recursion helps solve more complex problems than that, while making the code simpler Call mechanism Analysis of printing problems: Recursive call rule: When the program executes a method, it will open up an independ ...

Personal introduction: Name: not here Contact information: Platform: QQ / wechat / Xiaopo station / gitHub gitHub: https://github.com/kkzxm Unified nickname: cool house Xiaoming head portrait: Code perception: Less code means less bugs and less maintenance costs! On the number of lines of code to determine the salary... I dare not ju ...

From: earthly Wanderer: procedural ape focusing on technical research. If you have any copyright problems, please leave a message. You can check the relevant syntax through the help command and preview it in advance to facilitate a deeper understanding Formal service Let's take a look at the previous table structure create table if not exis ...

Interview questions Talk about your understanding of object orientation Facing objects is a programming idea and a way to look at things from the perspective of classes. Encapsulate things with common properties and methods under the same class. ​ Encapsulation: Definition: put data processing and business implementation logic inside an o ...

It's a little smoother to brush the questions today than yesterday. I actually brushed three tree questions in one breath. Although I still have to refer to the problem solution from time to time, I can also think about how the backtracking is realized. It seems that it is useful to brush more questions. I hope to maintain high learning efficie ...

I Deploy PXE remote installation service PXE (pre boot execution environment, running before the operating system) is a network boot technology developed by Intel. It works in the client/Server mode and allows the client to download the boot image from the remote server through the network and load the installation file or the entire opera ...

1 DSP part Clock initialization problem, 1.1 This part is divided into three steps: turn off the watchdog, set the clock, and turn on the peripheral clock 1.1.1 close the watchdog void DisableDog(void) { EALLOW; SysCtrlRegs.WDCR= 0x0068; EDIS; } Write 0X0068 to the register to complete the operation 1.1.2 setting clock (main ...

What is promise, use and implementation of promise What is promise It is a new constructor in es6, which contains an asynchronous operation promise is a solution of asynchronous programming, which solves the problem of hell callback. It is a way of chain transfer Promise is simply a container that holds the results of an event (usually an asy ...