Programming VIP

1.String Stored data: single data, the simplest data storage type and the most commonly used data storage typeFormat of stored data: one storage space holds one dataStorage content: string is usually used. If the string is displayed in the form of integer, it can be used as digital operation 1.1 adding / modifying data set key value 1.2 d ...

Eight methods of List collection object de duplication and attribute de duplication - Fage talk Java - blog Garden 1, Outline of this paper In this article, I want to write about eight methods of de duplication of List set elements. In fact, through flexible application, arrangement and combination, there are not necessarily eight, but there ...

I am xuetianyu, an FPGA enthusiast. My research direction is FPGA Architecture Exploration and SOC design. Focus on official account [integrated circuit design course], pull you into "IC design exchange group". 1. Preface It took nearly a week to realize a two-dimensional code recognition alone. In this article, I will introduce in ...

Basic concept and function of array java array stores a group of data with the same data type. The space in memory is continuous. Once the length is given, it cannot be changed Arrays are reference data types (objects), but they can store basic types or reference types Array creation Declaration array Int means that the data type that can ...

First, realize the secret free login permission of remote git on the serverGenerate a set of SSH keysssh-keygen -t rsa -f ~/.ssh/id_rsa -P '' -C "xxx@qq.com"Take the newly produced private key into effectssh-agent bash && ssh-add ~/.ssh/id_rsaexitCopy the public key output by the following command and configure it to the remote service ...

1, Title Requirements Give you the root node of a binary tree, root, and judge whether it is an effective binary search tree.A valid binary search tree is defined as follows: The left subtree of a node contains only the number less than the current node. The right subtree of a node only contains a number greater than the current node. ...

http2 protocol frame format We know that network transmission is in binary form, so the transmission at the bottom of all protocols is also binary. So the problem comes. The client sends a packet to the server. How does the server know whether the packet is completed or still being sent? Or, if a data packet is too large, the client needs to b ...

Request de duplication This is a high-frequency interview question for reptile post: Q: How does the sweep remove duplicate requests? What is the de duplication principle? How does the request calculate uniqueness? With this question, enter today's theme. DUPEFILTER_CLASS In the scene project configuration, DUPEFILTER_CLASS is the setting ...

540. A single element in an ordered array 2022.2.14 one question per day Title Description Give you an ordered array of integers, where each element will appear twice and only one number will appear once. Please find and return the number that appears only once. The solution you design must meet O(log n) time complexity and O(1) space comp ...

1. String ①. Definition of string String -- a finite sequence composed of zero or more characters. It is a special linear table. Its data element is one character, that is, a linear table with limited content. Substring: A subsequence of any consecutive characters in a string Main string: String containing substring Character pos ...