Show HN: AlgoDrill – Interactive drills to stop forgetting LeetCode patterns

Source: Hacker News

Overview

I built AlgoDrill because I kept grinding LeetCode, thinking I knew the pattern, and then completely blanking when I had to implement it from scratch a few weeks later.
AlgoDrill turns NeetCode 150 and more into pattern‑based drills: you rebuild the solution line by line with active recall, get firs…