Coding helper

What it does

The Coding tab takes a coding-interview problem and returns three different approaches — Brute, Optimized, and Most Optimal — each with a complete code snippet, time and space complexity, a short narration you can read aloud, a step-by-step trace on the first example, per-line explanations, and a pattern tag (Two Pointers, Sliding Window, etc.) on the active solution.

Solutions auto-run against the parsed examples once streaming completes — you don't have to click Run. Switching between solutions swaps the editor contents in place, so you can flip while talking the interviewer through the trade-offs.

Input modes

Reading the three solutions

• Brute — easy to explain, slow to run. Good as your opening “let me start with the obvious approach” answer.
• Optimized — a meaningful improvement over brute. Often the right answer for non-FAANG interviews.
• Most Optimal — the approach the interviewer is most likely looking for. Usually the one to land on after walking through the first two.

Each solution has a narration field — a first-person summary written in the way you'd actually say it. Use it as a thinking-out-loud script, not a summary to skim. The active solution also displays a pattern tag badge (Two Pointers, Sliding Window, DP, etc.) for fast scanning.

Switching languages

The language picker in the editor toolbar swaps the editor's syntax mode and either loads a starter template (if no solution is generated yet) or translates the existing three solutions to the new language without re-solving from scratch.

Translation is much faster than a full solve and does not consume a daily-limit slot — flip languages freely if you're unsure what the interviewer expects. Many languages are supported, including SQL, Bash, and TypeScript.

Running and fixing code

• Auto-run — once streaming completes, Cariara runs the active solution against the parsed example test cases automatically. No click needed.
• Run — manually re-run after edits. Pass/fail per case shown inline.
• Fix — appears when one or more test cases fail. Sends the failing output and asks Sona to repair the code without losing your edits where possible.
• Test cases panel — add, edit, or remove test cases inline. Use this to verify edge cases the interviewer raises mid-question.
• Regenerate — bypass the answer cache and ask for a fresh solve. Useful when the cached solution feels off.

Sona follow-up sidebar

The right rail on the Coding tab is a Sona sidebar — a focused Q&A pane that knows the active problem and active solution. Ask follow-ups like “why is this O(n log n) not O(n)?” or “can you walk through this with input [1, 2, 3]?” without leaving the tab. Different from the live-interview Sona stream — this one is for deliberate, off-mic exploration.

Timer

A built-in countdown timer (15 / 30 / 45 / 60 minutes) lets you simulate real interview pressure during practice. The ring goes amber as you approach the limit and red when time's up.

Daily limits

The limit resets at midnight UTC. Switching languages on an existing solution doesn't consume a slot.

Tips for live sessions

• Submit the question early — the moment you've heard the full problem, click Solve so the answer is ready by the time you start coding.
• Drag-and-drop a screenshot from CoderPad / HackerRank straight into the textarea instead of retyping — one step, no retyping errors.
• Use the Brute narration to buy yourself time — talking through the obvious approach while reading Most Optimal quietly is a legitimate strategy.
• If the interviewer asks for a specific complexity (“can you do it in O(n)?”), pick the solution whose complexity badge matches.

Live session setup, audio capture, and Cmd+B safety are documented inLive Session.