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Show HN: TraceLit – debug LeetCode step by step
I built TraceLit because I was tired of manually dry-running LeetCode problems, especially trees and recursion problems where it’s easy to lose track of execution.<p>You paste code and input, run it, and step through execution line by line. It helps you see variable changes, control flow, and where things start going wrong.<p>It’s especially useful for recursion, trees, linked lists, and simulation-style problems.<p>You can try it here: <a href="https://tracelit.dev" rel="nofollow">https://tracelit.dev</a> No signup required.<p>I’d love feedback on which problem types this feels most useful for, and what feels confusing.
TraceLit is a useful utility for a specific pain point in the large technical interview prep market, but it currently lacks the defensibility and traction required for venture investment. It faces significant competition from established platforms like LeetCode and free tools like Python Tutor, making it more of a feature than a standalone company at this stage.