Elementary Math Problem Generator

1. Problem Generation
   • Users can specify the numerical range and quantity of problems to generate.
   • Problems are exported in TXT format and saved in the Android file system under question_timestamp.txt.
2. Upload Problem & Answer Files
   • Users can separately upload problem files and answer files.
   • The system parses the answer file and matches it with the generated problems.
3. Correctness Calculation
   • The system compares user-submitted answers with correct answers and calculates accuracy.
   • Results are displayed as a percentage, along with a detailed breakdown (correct/incorrect status for each problem).
4. Export Score Report
   • Users can export results as a TXT score file, including:
     • Overall accuracy
     • List of correctly answered problems
5. Share Problems
   • Users can share problems via a unique share code.
   • Others can input the code to retrieve the same problem set.

• Uses WebView to embed an HTML-based UI for problem display and interaction.
• JavaScriptInterface enables Java-JS communication for network requests and local storage access.

• RESTful API built with Java Spring Boot for data storage and processing.
• MySQL database stores problem sets and user submissions.

• HTML/CSS/JavaScript for responsive layouts, styling, and dynamic interactions.
• HTTP requests for real-time data exchange with the server.

1. Expand Problem Types
   • Support additional question formats (e.g., multiple-choice, fill-in-the-blank, true/false).
2. Optimize Problem-Generation Algorithms
   • Improve the accuracy and diversity of generated problems.
3. Enhance User System
   • Introduce user registration, login, and reward mechanisms (e.g., points system) to boost engagement.
4. Develop Mobile Applications
   • Port the app to iOS to expand the user base.

This product is a practical and scalable problem-generation and sharing tool with strong market potential. Moving forward, we will continue refining features and optimizing the user experience to deliver higher-quality services.