DSA DOJO · LEARN BY WATCHING STATE CHANGE
Turn code into visible decisions you can pause, predict, and explain.
NOT ANOTHER LIST OF ANSWERS
DSA Dojo keeps the visual state, code, explanation, and result synchronized—so you can follow the reasoning, not just memorize the solution.
MEET YOUR GUIDE
Pip helps you slow down, name the invariant, notice meaningful changes, and celebrate understanding—not speed.
01 · ONE DECISION
Pip follows the state—not just the final answer—so you can see why each decision is made.
02 · A REUSABLE PATTERN
A sliding window reuses its previous total. You can see what leaves, what enters, and why the work stays linear.
03 · CONTROL THE EXECUTION
The goal is not to watch an animation. It is to explain what happens next—then test your reasoning with a new input.
ONE SOURCE OF TRUTH
A deterministic trace keeps every learning surface in agreement. Rewind to any step and the same state returns.
CURRICULUM · 20 TOPICS
55 focused lessons grouped by topic. Lesson numbers preserve the recommended L01-L55 path.
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55 LESSONS · L01-L55
The JavaScript catalog loads every lecture from the curriculum manifest. Enable JavaScript to browse all 20 topics, or enter the studio at the first lesson.
Each topic adds a distinct invariant, composes earlier ideas, or introduces a reusable way to inspect state.
READY WHEN YOU ARE
Pick a lesson, make a prediction, and follow the state one decision at a time. A clear explanation is the real victory.
Enter dojo