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Visual DSA

Don't memorize algorithms. Watch them think.

Step-by-step animations, synced code tracing and 318 structured lessons, from arrays to graphs.

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AlgoLab in numbers

318
Visual lessons
3
Learning tracks
3
Levels
Free
To learn

What is inside

Everything you need to master DSA

Interactive visualizers

Step through algorithms frame by frame with synced code highlighting — like a debugger for DSA.

Structured learning path

Data Structures, Algorithms and Patterns — beginner to advanced, unlocked in order.

Theory → Visualize → Quiz

Read the idea, watch it run, then prove you understood it with a quiz.

Progress that sticks

Your place in the roadmap is saved to your Noirly account, on any device.

Tracks

Three tracks, one roadmap

Beginner → Intermediate → Advanced across every topic.

Data Structures

Master ways to organize and store data efficiently.

  • Beginner6 topics
  • Intermediate5 topics
  • Advanced4 topics

Algorithms

Sorting, searching, recursion, graphs, DP, and more.

  • Beginner3 topics
  • Intermediate3 topics
  • Advanced3 topics

Patterns

Reusable problem-solving patterns mapped to visual lessons.

  • Beginner2 topics
  • Intermediate2 topics
  • Advanced1 topics

How it works

Every lesson, the same three steps

  1. Read the theory

    Concise explanations with complexity analysis before you code.

  2. Run the visualizer

    Play, pause and scrub through every step with live state.

  3. Pass the quiz

    Score 70% or more to complete the lesson and unlock the next one.

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