Preparation Lab Design with evidence

Low-level design · 15-topic curriculum

Design clearly.
Build confidently.

Learn the essential decisions, practise them on real problems, and mark only the chapters you can apply without notes. Progress stays private in this browser.

Start learning Read the roadmap
15 Complete chapters
11 Runnable solutions
154 Behavior tests
1 Evidence-based readiness gate

The working loop

Clarify→Model→Walk →Implement→Verify→ Adapt

The curriculum

Fifteen chapters. One clear sequence.

Core interview skills come first; deeper production topics remain available when a problem needs them.

Readiness is earned

Reading is the start. Repeatable evidence is the finish.

Personal preparation requires independent designs, tested implementations, timed mocks, and consistent unseen passes.

Open the final readiness gate →
  1. 12varied independent designs
  2. 8end-to-end tested implementations
  3. 5realistic timed mocks
  4. 3×consecutive unseen 80+ passes

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