Problem decomposition
Clarify inputs, constraints, edge cases, and the target complexity before implementing.
Live DSA mock · Free Credit eligible
Coding interview and DSA practice
Practice one complete live DSA scenario with a voice interviewer, a lightweight native editor, and handwritten test reasoning. You can also browse candidate-reported Coding and DSA prompts for broader preparation.
Available now
Solve and explain in a live interview
The first live scenario lets you choose Python, JavaScript, Java, or C++, then work in either a plain editor or a syntax-assistance editor while speaking with the interviewer.
Validation is deliberately handwritten in this MVP. Code is not compiled or run, and syntax assistance is limited to editor mechanics such as auto-closing, indentation, line numbers, and bracket checks—not algorithm completion.
Data structure selection
Explain why a map, heap, tree, graph, queue, or other structure fits the operations you need.
Algorithmic reasoning
Compare approaches, communicate invariants, and make time and space complexity explicit.
Implementation quality
Practice readable code, validation, testing strategy, and follow-up optimization in your own editor today.
Roadmap — not available today
Execution and AI-assisted interview modes
The next coding milestones are a secure compile/run environment and a separate, transparent AI-assisted interview mode. Neither capability is part of today's live DSA MVP.
Compile and run
Execute solutions and tests in a secure sandbox with language-appropriate feedback.
AI-assisted coding mode
Use AI transparently while the interview measures problem framing, prompt quality, code review, testing, correction, and final accountability.
Today's live mock remains useful for clarification, algorithm reasoning, implementation, complexity, and manual validation without claiming machine verification.
A practical workflow for today
Use the live mock, then broaden your practice
- 1
Start the live scenario
Choose a language and editor mode, clarify the contract, and think aloud while implementing.
- 2
Handwrite validation
Record representative inputs, expected outputs, edge cases, and manual traces without relying on execution.
- 3
Expand with the question bank
Filter reported DSA prompts by company or difficulty and repeat the same explanation-first workflow.
Try the first live DSA mock
Solve the target-pair scenario with a live interviewer, then broaden your practice with the DSA question bank.