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INTERVIEW PRACTICE

Practice workspace

Understand the problem. Build your solution.

Problem

Loading your question…

Example

Constraints

    View all test cases

    JavaScript practice·All tests are visible

    Solution

    solution.jsSaved locally
    ⌘ / CtrlEnterto run

    Test results

    Ready to run

    Choose a language for a curated question. Imported questions use their specified language.

    2-second execution limit. Public tests check examples, not every possible case.

    A little guidance

    Work through the problem with one hint at a time.

    Hints are available. Connect live coaching to ask a question.

    YOUR NEXT CHALLENGE

    What do you want to practice?

    Choose a topic and difficulty, or describe a custom challenge for AI generation.

    The curated library works without an API connection.
    FROM CHATGPT TO YOUR WORKSPACE

    Import a question

    Copy the prompt into ChatGPT, then paste the returned JSON below. Your current draft stays in the library.
    YOUR LEARNING PATH

    Create a course
    BUILD A LESSON

    Add a lesson

    Save a question to the shared library to use it here. ChatGPT can also create questions and add them to this lesson. Existing code examples are preserved when you edit.