LeetCode on VSCode

Solve LeetCode problems in VS Code with faster testing, cleaner submissions, and a focused workspace layout.

Features

• Browse, search, and open LeetCode problems directly in VS Code.
• Keep the problem description on the left and your code on the right.
• Run tests with a faster direct workflow instead of jumping through extra prompts.
• Debug Java solutions with real VS Code breakpoints from the editor title bar.
• Parse multiple examples from the problem description and run them in sequence.
• Save failed submission cases and replay them in later local tests.
• Read cleaner grouped submission output with inputs, outputs, and comparisons.
• Keep the workspace tidy by closing the previous problem tab when it is safe to do so.
• Automatically collapse the sidebar after opening a problem so you can focus on coding.

Quick Start

1. Install the extension.
2. Open the LeetCode view in the Activity Bar.
3. Run LeetCode: Sign In.
4. Open a problem from the explorer.
5. Write your solution and test locally.
6. Submit when you are ready.

Recommended Workflow

• Open a problem and start coding with the description visible beside your solution file.
• Use the direct test command to run the available examples quickly.
• Review grouped results in the submission panel instead of scanning raw output.
• Submit once the local examples and any saved failed cases look correct.

Testing and Submission

• Testing supports multiple examples extracted from the problem description.
• Failed cases from previous submissions can be replayed in later test runs.
• Submission results are formatted into clearer sections for faster debugging.
• Local stdout is preserved when LeetCode returns it, which makes println-style debugging easier.

Debugging in VS Code

• Open a Java solution and click the Debug in VS Code bug button in the editor title bar.
• Pick an official example, a failed case, a saved case from .debug.txt, or Custom Input....
• Custom input is collected one parameter at a time, so you can type values the same way you would in LeetCode's Input box.
• Open Debug Cases File creates a sibling .debug.txt file where you can keep your own reusable cases.
• On a fresh machine, the first debug run may ask you to install the Java debugger tools or a JDK. Use the guided buttons, finish the one-time setup, then click Debug in VS Code again.

Workspace Behavior

• Problem description opens on the left.
• Code opens on the right.
• The sidebar collapses after opening a problem.
• The Activity Bar remains visible.
• The previous LeetCode code tab is closed automatically when it is safe.

Commands

• LeetCode: Sign In
• LeetCode: Show Problem
• LeetCode: Test in LeetCode
• LeetCode: Test in LeetCode (Direct)
• LeetCode: Submit to LeetCode
• LeetCode: Search Problem

Local Packaging

From the extension folder:

npm install
npx @vscode/vsce package

If you already have vsce installed globally:

vsce package

You can also use the included helper scripts:

./scripts/release.sh package
./scripts/release.sh publish
./scripts/release.sh verify

More release notes and maintenance steps are documented in RELEASE.md.