Prepare for Interviews by Confirming Each Round’s Tool Rules

Before choosing practice problems, establish what your interview round permits and evaluates. An independent coding exercise and an agent-assisted exercise call for different preparation.

Confirm the rules for your round

Some rounds ask you to implement independently; others allow or expect an AI coding agent. Documentation lookup, autocomplete, internet access and generated code may each have different rules.

Confirm the role, round and current tool rules with your recruiter or interviewer. Ask what you will build, whether requirements arrive in stages, how you will test your work and what you should explain. Guidance for a different round does not establish the rules for yours.

Turn the format into practice

For an independent round, rehearse producing code in the intended language with only the permitted resources. Check the small operations you normally delegate: parsing strings, indexing collections, handling empty input, and writing tests.

For an agent-assisted round, practice specifying the task, inspecting a patch, finding a counterexample, and verifying the result. Generating more code does not by itself demonstrate that the code satisfies the requirement.

For either format, practice explaining assumptions and tradeoffs. A correct result and a clear account of why it is correct are separate things to prepare.

Use guidance without copying questions

Public descriptions can inform original exercises: multipart requirements, data transformations, boundary tests, and practical debugging. You do not need confidential interview questions to practice those skills.

We are building Beyond Big O around that distinction. Original tasks can target a documented skill while keeping the source, scope, and limitations clear.

Use the instructions for your own interview as the source of truth. Beyond Big O offers independent preparation, with no employer affiliation or endorsement.

You can rehearse the independent coding format with a public practice problem, then use a counterexample to review a plausible patch.