Show HN: DSA Trainer, LeetCode practice with a hint ladder instead of spoilers

Category: devtools

Tags: leetcode, dsa, interview-prep, hints, learning-tool

Score: 4.0/10 (Innovation: 4, Technical: 3, Documentation: 4, Utility: 5)

DSA Trainer is a web app that helps users practice LeetCode-style problems using a 'hint ladder' approach instead of direct spoilers, aiming to teach the thinking process behind problem-solving. It targets intermediate developers who struggle with algorithmic interviews by providing progressive hints and mental models. The project is interesting for its pedagogical focus on guided discovery rather than rote memorization.

Target audience: backend devs, software engineers preparing for interviews

Repository: https://dsatrainer.com/

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