🚀 How to Use the Extension

1. Setup and Installation 🛠️

📦 Install the Extension

Make sure the extension is installed and running in your VS Code environment. 🔥

🗂️ Create a Workspace

Open or create a folder (workspace) where you will be working on your LeetCode problems and C++/Python solutions.

✅ Ensure Test Cases File Exists

Before running your code, ensure that the test cases and expected outputs are generated correctly. 📄

2. Fetching Test Cases from LeetCode 📡

📝 Command: extension.getLeetCodeTestCases

How to Use:

1. Press Ctrl+Shift+P (Windows/Linux) or Cmd+Shift+P (Mac) to open the Command Palette. 🎨
2. Type "Fetch LeetCode Test Cases" or extension.getLeetCodeTestCases and hit enter.
3. Paste the LeetCode URL (for a specific problem) when prompted. 🌐
4. The extension will fetch the test cases from LeetCode's API, process them, and save them as test_cases.txt and expected_outputs.txt in your workspace folder.

🔍 What Happens:

The extension will:

• Decode any HTML entities.
• Format the test cases and expected outputs.
• Save them as text files in your workspace.

3. Running the Code (C++ or Python) ▶️

📝 Command: extension.runExtension

How to Use:

1. Press Ctrl+Shift+P (Windows/Linux) or Cmd+Shift+P (Mac) again.
2. Type "Run Extension" or extension.runExtension.
3. The extension will first check for the test_cases.txt file and the corresponding solution file (solution.cpp for C++ or solution.py for Python).
4. It will compile or run the code based on the selected language.
5. The code will run with the test cases as input, and it will compare the actual output with the expected output from expected_outputs.txt.

🔍 What Happens:

• For C++: The code will be compiled and run with the test cases. 💻
• For Python: The Python script will be executed directly with the test cases. 🐍
  The extension will check if the output matches the expected output and notify you accordingly. ✅

4. Configuring the Language (C++/Python) ⚙️

How to Configure:

1. Open your VS Code settings.
2. Go to Preferences → Settings or press Ctrl+, or Cmd+,.
3. In the search bar, type "leetcode".
4. Look for the language settings and set your preferred language to C++ or Python based on the language you're using.

5. Saving and Checking Outputs 💾

• The extension saves the outputs in separate files (e.g., solution_output.txt) based on the code language.
• The output is compared to the expected output, and results are shown in the VS Code status bar or in a message box. 💬

6. Handling Errors ⚠️

• Issues Fetching Test Cases: If there are issues with fetching the test cases, you'll be notified with an error message. 🚨
• Compilation or Execution Failures: An error message will show where the issue lies (e.g., missing file, incorrect command).

7. Important Notes 📌

• Make sure you have the correct files:
  • solution.cpp for C++ or solution.py for Python in your workspace folder.
• Ensure the LeetCode problem URL you enter is in the correct format and corresponds to an existing LeetCode problem.

8. Regarding the Driver Code 🏁

• I’m providing a basic driver code in the dummy file for you to modify slightly if required.
• Since the inputs are clearly visible, feel free to alter them as per your convenience.

Hope this helps! Happy coding! 😄