🎮 Game Introduction

Tic-Tac-Toe is a classic two-player game played on a 3x3 grid. The first player to align three marks horizontally, vertically, or diagonally wins. If all 9 squares are filled with no winner, the game ends in a draw.

🕹️ How to Play

• 👫 Two-player mode: Play with your friend on the same device.
• 🤖 AI mode: Challenge the computer with two difficulty levels: Easy and Hard.
• 🖱️ Simple controls: Just click on the squares to make your move.
• 🏆 Automatic win detection: The game will announce the winner or a draw automatically.

📷 Screenshots

You can choose to play against a friend or the computer.

Available difficulty levels: Easy and Hard.

Game start screen.

Game over screen. You can choose to play again or exit.

For detailed information, please check the GitHub repository: https://github.com/jlu005807/Tictactoe

🕹️ Game Introduction

Survivor-of-Teyvat is a roguelike game where your goal is to score points by defeating enemies. The number of energy orbs around you represents your health. Each monster has unique characteristics—explore and discover them!

⚙️ Features

• 🧑‍🎮 Character selection: Choose your favorite character to play.
• ⚔️ Monster challenge: Each monster has unique skills and behaviors.
• 💡 Skill variety: Use different skills to defeat enemies.
• 📈 Score system: View your score and results at the end of each game.

📷 Screenshots

Select your favorite character from the character selection screen.

Control your character using the arrow keys or WASD. Attack enemies using energy orbs.

At the end, view your score and game results.

For detailed information, please check the GitHub repository: https://github.com/jlu005807/Survivor-of-Teyvat

📚 Project Introduction

Data Structures and Algorithms are fundamental to computer science. This repository provides notes and books for your study.

🔑 Key Features

• 📖 Comprehensive notes: Well-organized study materials.
• 🔗 PDF downloads: Downloadable resources for offline study.
• 💡 Algorithm explanations: Clear and concise explanations.
• 📝 Practical examples: Real code and use cases.

📷 Screenshots

This repository provides notes and books on Data Structures and Algorithms. Feel free to download the PDFs for your studies.

For detailed information, please check the GitHub repository: https://github.com/jlu005807/Data_Structure_and_Algorithm

📘 Project Introduction

C++ is a high-level programming language widely used in game development, system programming, and web development.

🔑 Key Features

• 🛠️ Multi-paradigm support: Procedural, object-oriented, and functional programming.
• 📄 Code samples: Practical code examples for learning.
• 🔗 PDF downloads: Downloadable learning materials.
• 💡 Modern C++ features: Covers latest language features.

📷 Screenshots

This repository contains notes and books on C++. Download the PDFs to enhance your understanding.

For detailed information, please check the GitHub repository: https://github.com/jlu005807/Cpp

🖥️ Project Introduction

This project focuses on CPU design, featuring both MIPS32 and LA32R architectures.

Note: The MIPS32 and LA32R implementations have only passed their respective Lab1. The design includes BTB (Branch Target Buffer) and BHT (Branch History Table) for branch prediction, and uses bypass forwarding to resolve data hazards.

🔑 Key Features

• 📊 Architecture comparison: MIPS32 and LA32R implementations.
• 📄 Design documents: Detailed documentation for each architecture.
• 🔗 PDF downloads: Downloadable resources for in-depth study.
• 💡 Educational value: Suitable for learning CPU design principles.

📷 Screenshots

The MIPS32 and LA32R implementations are organized in separate subdirectories.

For detailed information, please check the GitHub repository: https://github.com/jlu005807/CPU.git

🔍 Project Introduction

Text_Query is a simple project for full-text search. Enter a keyword to search through text files and get results instantly.

⚙️ Features

• 🔍 Keyword search: Quickly find information in text files.
• 🗂️ History records: View and manage your search history.
• ⚡ Efficient queries: Fast and accurate search results.
• 📄 Operation guide: Clear instructions for use.

📷 Screenshots

In the command window, you can perform queries, exit the program, view query history, or clear the history.

In the query window, enter the path to the text file and the keyword. You can use &, |, and ~ for advanced search operations.

In the history window, view your past queries. Enter 0 to display the entire history.

For detailed information, please check the GitHub repository: https://github.com/jlu005807/Text_Query.git

🧩 Game Introduction

Tetris is a classic and popular game worldwide. Try it out and see if you can find the bugs!

⚙️ Features

• 🧩 Classic gameplay: Enjoy the timeless Tetris experience.
• 🎨 Colorful interface: Visually appealing design.
• 🏆 Score tracking: Keep track of your best scores.
• 🐞 Challenge bugs: Discover and report any issues.

📷 Screenshots

The game over screen displays your final score.

For detailed information, please check the GitHub repository: https://github.com/jlu005807/Tetris

📇 Project Introduction

AddressBook is a contact management system. It stores personal information such as name, phone number, email, and address, as well as notes and tags for each contact.

⚙️ Features

• 📇 Contact management: Add, edit, and delete contacts easily.
• 🔍 Quick search: Find contacts by name, phone, or address.
• 📝 Information editing: Update contact details anytime.
• 🗑️ One-click clear: Remove all contacts with a single action.

📷 Screenshots

First, add a new contact with details such as name, gender, phone number, and address.

Then, view all contacts in the address book.

Delete contacts by searching for them.

Search for contacts by name, phone number, or address.

Edit contact information as needed.

Clear all contacts from the address book.

Finally, you can exit the program.

For detailed information, please check the GitHub repository: https://github.com/jlu005807/addressbook

💻 Project Introduction

This project simulates a computer room reservation system for schools. There are three types of users: students, teachers, and administrators.

⚙️ Features

• 💻 Multi-user support: Students, teachers, and administrators.
• 🕒 Reservation management: Book, view, and cancel reservations.
• 🔒 Permission levels: Different access for each user type.
• 📊 Statistics: View and analyze reservation data.

📷 Screenshots

On the student page, log in with your student number and password to reserve a computer room.

Students can also view and cancel their reservations.

On the teacher page, log in with your teacher number and password.

Teachers can view all reservations and verify them.

On the administrator page, log in with your administrator number and password to manage the computer rooms.

Administrators can add, delete, and modify student and teacher accounts, as well as manage reservations.

For detailed information, please check the GitHub repository: https://github.com/jlu005807/the-reservation-of-computer-room.git

📜 Game Introduction

This is a popular science game centered on ancient Chinese physics, designed to solve practical problems using traditional knowledge. Currently, it features only a dialogue system and lacks a complete interactive gameplay system. However, you can still try it out by downloading and extracting Game.zip. Here are some actual screenshots:

For detailed information, please check the GitHub repository: https://github.com/jlu005807/GEWUQIYUJI

BookSystem is a comprehensive library management system built with Java Swing, featuring a three-tier architecture design. It supports book search, borrowing, returning, and user management functionalities. The system boasts a beautiful modern interface with real-time search, card-based display, and permission management features, making it suitable for universities, libraries, and similar institutions.

Core Features

• 🔍 Smart Search：Fuzzy and real-time search by title, author, and ISBN
• 📚 Book Management：Card-based display with add, delete, borrow, and return operations
• 👤 User Management：Role-based access control with real-time borrowing status
• 🖥️ Modern UI：Custom components with unified design and responsive layout
• 🗃️ Data Persistence：MySQL database support with JDBC connection pooling

Technical Architecture

Built with a classic three-tier architecture: Presentation Layer (Java Swing GUI), Business Logic Layer (Controller), and Data Access Layer (DAO), ensuring clear structure, easy maintenance, and scalability.

System Features

• Duplicate borrowing prevention and borrowing limit control
• Automatic inventory management and borrowing record statistics
• User-friendly error handling and empty state management
• Comprehensive logging and troubleshooting capabilities

Firstly,you can see the main page of the system. there are three buttons in the main page,login,register,and help.

in the help page,you can see the help information of the system. there is my QQ and email. and then,the register page. you can register a new user. you must input your username,password,and second password. the second password must be the same as the first password. Otherwise the page will warning you. in login page you will see the same warning. registe successful,you can login now. login successful,you can see the user page. you can search relative book by title,author,and ISBN. also return books on the Borrowing History screen. Please note that you cannot borrow the same book at the same time, and the maximum number of books you can borrow is 3 xiuxiu This is a logout feature that allows you to log out the current user and return to the main interface, as well as the admin interface in the admin page,can add new book , but If you add a book with the same name and author, you'll be prompted to merge or cancel in the admin page,also can delete book, firstly you should select the book through click,or search the book and click, and if the book is borrowed,you can delete it, but at the same time, the associated borrowing history will be deleted, even if it hasn't been returned At any time, you can close the system by clicking the "X" in the upper right corner. finally,you can see the log file like this.

For detailed information, please check the GitHub repository: https://github.com/jlu005807/BookSystem

📚 Project Introduction

This project summarizes my study of Operating Systems, covering both theory and hands-on practice. It includes notes, code, and experiment results on core OS topics.

🔑 Key Topics

• Process & Thread Management
• Memory Management
• File Systems
• Device Management

📷 Screenshots

For detailed information, please check the GitHub repository: https://github.com/jlu005807/Operating_System