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Exam practice, collected in one place

Clear subjects, function signatures, and examples so you can drill before the exam. Pick your rank below - we’re building this hub step by step.

Open Rank 02 (C) Open Rank 03 (Python) Open Rank 04 (Python) Open Rank 05 (Python)

Full subject text

Assignment wording, constraints, and expected behaviour in one view.

Signatures & examples

Function prototypes plus input/output samples to sanity-check your solution.

Nine languages per rank

For every rank we publish, the interface is available in English, Deutsch, Français, Español, Italiano, Русский, Türkçe, 中文, and العربية.

We ship updates regularly

New subjects, fixes, and languages land here often. Open the changelog for full release notes.

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Browse ranks

Ranks

Each rank has its own subdomain. Rank 02, Rank 03, and Rank 04 are live, while Rank 05 is in progress.

Available now

Rank 02

Fifty-seven C exercises from the community pool: search, full modals, six-language UI.

C 57 exercises
Open Rank02

Available now

Rank 03

14 Python practice subjects with search, full modals, and nine languages.

Python 14 subjects
Open Rank03

Available now

Rank 04

Advanced Python challenges focusing on algorithmic patterns, lists, and rotation logic.

Python 7 subjects
Open Rank04

Available now

Rank 05

Advanced Python exam topics covering graphs, word ladders, matrix spirals, and scheduling.

Python 7 subjects
Open Rank05

In development

Rank 06

Expert Python challenges and advanced data structure problem sets for Rank 06.

Python 0 subjects
⚡ In Development