Programmer Think

Summary 1. The k th largest element in the array, using the idea of fast partition, plus binary retrieval 2. Bit count, the intuitive method of time complexity is o (n*sizeof(int). The effective way to reduce time complexity is to judge the par ...

Links to the original text: https://juejin.im/post/5d7893d56fb9a06af92bcdbe What are higher-order components? Before explaining what higher-order components are, you can first understand what higher-order functions are, because their co ...

I. Sprcloud Microsoft Service Architecture 2. Building Sprcloud application step by step service client Service: Application that provides services. Port is 808x Client: The application port for invoking the service is 809x The whole program uses the client end to call the server end program according to the user id to return user informatio ...

Summary Firstly, the project overview is synchronized: Last article shared, routing Middleware - logging, this article we share: routing Middleware - catch exceptions. When the system is abnormal, prompt "system abnormal, please contact the administrator!" At the same time, panic alert mail is sent. What is an exception? The excepti ...

This article serves as a record of some of the tricks encountered in the use of python, some of which are written by myself, some of which are built-in functions of python, and some of which are taken from the Internet. In this record, only for backu ...

1. session Storage Structure in redis 2 stay The previous chapter When we talk about spring session storage in redis, we can see that every session storage in redis generates three records. The record format is as follows: This is very troublesome, why can't one by one correspond, do each other's angels, do a pair of three, very influential ...

In life, sometimes we need to encrypt some important files. Python provides easy-to-use encryption libraries such as hashlib and base64. * * But for everyday learning, we can use XOR operation to implement a simple file encryption program, thus stren ...

Since bloggers have recently reviewed the basics and learned new knowledge points over and over again, blog articles published will not be published in sequence, but are well categorized.      Learn together and make progress together. Continue to precipitate, slowly strong. I hope this article will be helpful to you. If there is something wr ...

Sketch Programming often encounters the need to format the data used, such as generating strings to record logs, generating complete data sent to the network, and so on. It may be necessary to format int, string, char, etc. Common methods include ...

Array and linked list have their own advantages and disadvantages in data processing. Array query is fast and insertion is slow. Linked list performs well in insertion, but the query is weak. Hash table integrates the advantages of array and linked list, and has good speed in insertion and search. The HashMap we will analyze later is implemente ...