Interactive Coding Platform

Learn algorithms bybuilding real projects

Stop memorizing. Start understanding. Each project teaches a core data structure through hands-on coding that sticks.

// From O(n) to O(1)
const taskMap = new Map();
taskMap.get("task-id"); // instant lookup ⚡

Project Live

Interactive Steps

100%

Free

Curriculum

Choose your project

Each project is designed to teach you a specific data structure through practical application. Start simple, build complexity.

Why is finding one task in thousands so slow?

IntermediateComing soon

Graphs

How does Facebook know who you might know?

IntermediateComing soon

Tries

How does Google predict what you're typing?

BeginnerComing soon

Stacks

Ctrl+Z works everywhere. How?

IntermediateComing soon

Heaps

Not all notifications are equal. How do apps decide?

IntermediateComing soon

Trees

Folders inside folders. What structure is that?

Method

Choose something real — a task manager, social feed, or search autocomplete.

Understand the problem and why certain structures solve it efficiently.

Write code, run it live, and feel the performance difference firsthand.

Be one of the first to try a new way of learning data structures through hands-on practice. It's free.