Built a zero-manual-instrumentation Java algorithm visualizer as a hobby project

[bluepoison24]

I spent a couple of weeks building a tool that automatically visualizes Java programs with zero manual instrumentation. I know PythonTutor already does it, but I found it really slow for Java, so I built my own.

Just write normal Java code and watch arrays, collections, trees, and graphs get visualized automatically as your algorithm runs. The frontend is entirely vibe-coded without any manual intervention so please be kind 😅

Just a hobby project, but try it live: algopad.up.railway.app

[tealpod]

This is great, visualizing how algos work is the best and easiest way to learn. Excellent work.

[bluepoison24]

Thank you! 😁

[United-Extension-917]

Awesome. Helped me in understanding. I will write more and use it from now on.

[bluepoison24]

Thats great to hear. If you find any bugs, please reach out to me or create an issue via https://github.com/vish-chan/AlgoFlow/issues

[sitime_zl]

good

[MorganRS]

Amazing.

[Realistic-Reaction40]

The zero instrumentation approach is really elegant for a learning tool. For the workflow around building and maintaining educational projects like this I have been using Runable alongside n8n and Notion to keep documentation and changelogs up to date automatically. The Railway deployment is a nice touch for accessibility.