DSA Pattern Study Kit

Recognize the pattern → apply the technique → implement with confidence. Seven patterns for the Senior SWE interview round.

Suggested path: read the Master Playbook’s Layer-1 sections to build the recognition reflex, work the deep-dives 01 → 07 (each has an interactive guide, a printable PDF, and a focused quiz), then take the 30-question master exam. Aim for 24/30 before live coding practice. Every page has hover/tap definitions for bold terms.

Start here — Master Playbook

The Pattern Playbook

All seven patterns in one place: recognition triggers, reusable skeletons, a unified decision flowchart, and the 30-question final exam.

Interactive guide PDF 30-question exam

Pattern recognition drill

Pattern Recognition — 300-Question Exam

Read a real problem and name the pattern(s) it belongs to — the core interview reflex. 300 questions across all seven families, 50 per page, with live scoring and a per-pattern breakdown. Single-answer cards grade instantly; multi-answer cards award partial credit.

Start the 300-question exam

Pattern Deep-Dives