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Course Introduction：1975. Maximum Matrix Sum Difficulty: Medium Topics: Array, Greedy, Matrix You are given an n x n integer matrix. You can do the following operation any number of times: Choose any two adjacent elements of matrix and multiply each of them by -1.

2024-11-24 comment 0  460

Course Introduction：Graphic and text AI matrix tools use computer vision and natural language to identify graphic content, including generative tools (such as DALL-E 2) and analytical tools (such as Google Vision AI). It can be used for image classification, object detection, and scene understanding to help automate analysis, enhance cognition, improve efficiency, and stimulate creativity.

2024-11-28 comment 0  1077

Course Introduction：Bitcoin red envelope rain is mainly distributed in six ways: 1. Social media interactive red envelope rain, users participate in the lottery by likes, forwarding, and commenting on Twitter, Telegram, Discord and other platforms, grab red envelopes for a limited time and bind money address to receive rewards; 2. Task-driven red envelope rain, complete tasks such as registration, real-name authentication, recharge transactions, or DeFi locking, liquidity mining, etc. to obtain small BTC or equivalent stablecoin rewards; 3. Live and AMA event red envelope rain, project parties randomly distribute red envelopes during live broadcast or Q&A session, participants need to send keywords or participate in the lottery; 4. Community contribution and content creation red envelope rain, publish original articles, videos, tutorials and other content to obtain red envelopes according to the contribution degree, points can be redeemed for BTC, and high-quality content enjoyment

2025-07-31 comment 0  578

Course Introduction：Transposing a Matrix in PythonTransposing a matrix involves switching the rows and columns, resulting in a new matrix where the jth element in the ith row becomes the ith element in the jth row. For instance, transposing the following 2x3 matrix:A=[[

2024-10-19 comment 0  875

Course Introduction：What is the Fastest Way to Transpose a Matrix in C ?Transposing a matrix, where rows become columns and vice versa, is an essential operation in...

2024-12-15 comment 0  1172

Course Elementary  13826

Course Introduction：Scala Tutorial Scala is a multi-paradigm programming language, designed to integrate various features of object-oriented programming and functional programming.

Course Elementary  82365

Course Introduction："CSS Online Manual" is the official CSS online reference manual. This CSS online development manual contains various CSS properties, definitions, usage methods, example operations, etc. It is an indispensable online query manual for WEB programming learners and developers! CSS: Cascading Style Sheets (English full name: Cascading Style Sheets) is an application used to express HTML (Standard Universal Markup Language).

Course Elementary  13183

Course Introduction：SVG is a markup language for vector graphics in HTML5. It maintains powerful drawing capabilities and at the same time has a very high-end interface to operate graphics by directly operating Dom nodes. This "SVG Tutorial" is intended to allow students to master the SVG language and some of its corresponding APIs, combined with the knowledge of 2D drawing, so that students can render and control complex graphics on the page.

Course Elementary  24632

Course Introduction：In the "AngularJS Chinese Reference Manual", AngularJS extends HTML with new attributes and expressions. AngularJS can build a single page application (SPAs: Single Page Applications). AngularJS is very easy to learn.

Course Elementary  27491

Course Introduction：Go is a new language, a concurrent, garbage-collected, fast-compiled language. It can compile a large Go program in a few seconds on a single computer. Go provides a model for software construction that makes dependency analysis easier and avoids most C-style include files and library headers. Go is a statically typed language, and its type system has no hierarchy. Therefore users do not need to spend time defining relationships between types, which feels more lightweight than typical object-oriented languages. Go is a completely garbage-collected language and provides basic support for concurrent execution and communication. By its design, Go is intended to provide a method for constructing system software on multi-core machines.