Structviz

BrightVertex Games

About this app

Structviz makes data structures finally make sense by letting you watch them work instead of just reading about them. Pick a structure — stack, queue, linked list, binary search tree, heap, or hash table, grouped into linear and non-linear categories — and run real operations on it, watching every push, pop, insert, delete, and search play out automatically, step by step, as the structure rearranges itself in front of you.

It's built to teach, not just display. Each operation animates what actually happens: nodes link and unlink in a linked list, a value bubbles up into place in a heap, a node finds its spot in a binary search tree, a key hashes into its bucket and collisions chain off it. The real code for each operation is shown alongside, with the current line highlighting in step with the animation, so you see exactly which line causes which change. Step through slowly to study a tricky case, or let it run on its own, and each structure comes with a plain-language explanation of how it works and the time complexity of its operations — plus a side-by-side comparison screen for when you want to see all six at a glance, so you learn why a hash table lookup is fast and why a list search isn't.

A short quiz mode checks that it stuck, asking you to predict the result of an operation or match a structure to its behavior, and a progress screen tracks how many operations you've run on each structure and how many days in a row you've kept at it. Clear, visual, and focused on real understanding.

Everything runs on your device: no account, no connection, no ads. Just the structures, the operations, and the logic laid bare.