TraceLit helps you prepare for technical interviews by tracing your Python code line by line. Works with LeetCode-style problems — visualize linked lists and trees in real time, and use AI to pinpoint exactly where your logic breaks.

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Hey everyone! 👋

Visualizing pointer logic in your head is hard. That’s why I created TraceLit—a visual execution tool designed to help you ace those tricky data structure interviews.

What makes it different?

Visual Execution: Watch nodes and pointers move in real-time as you step through your Python code.
Interactive Graphs: No more static diagrams; see exactly where your head, curr, and null pointers are.
AI Debugging: Get instant explanations for root causes when your code fails.

It’s live, free, and needs no sign-up: tracelit.dev.

I’m curious to know: Would this have helped you in your last technical interview? Also, let me know which languages or data structures you’d like to see added!

Can’t wait to hear your feedback! 🙌

Hey everyone! I just launched TraceLit on Product Hunt.

TraceLit lets you paste your Python code, enter a test case, and step through execution line by line while

watching linked lists and binary trees transform as interactive node graphs.

Built it because I kept losing track of pointers when dry-running on paper. Now I can see exactly where