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

(algodrill.io)
178 points henwfan | 1 comments | 09 Dec 25 11:09 UTC | HN request time: 0.001s | source

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 first principles editorials that explain why each step exists, and everything is tagged by patterns like sliding window, two pointers, and DP so you can hammer the ones you keep forgetting. The goal is simple: turn familiar patterns into code you can write quickly and confidently in a real interview.

https://algodrill.io

Would love feedback on whether this drill-style approach feels like a real upgrade over just solving problems once, and what’s most confusing or missing when you first land on the site.

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dragochat ◴[09 Dec 25 12:08 UTC] No.46204035[source]▶
...the f?! why are we interviewing ppl for things like this?!

you either:

(a) want DEEP understanding of math and proofs behind algorithms etc.

(b) can get away with very high level understanding, and refer to documentation and/or use LLMs for implementation details help

there is no real world use case for a middle-ground (c) where you want someone with algo implementation details rote-memorized in their brain and without the very deep understanding that would make the rote-memorization unnecessary!

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farhanhubble ◴[09 Dec 25 12:17 UTC] No.46204107[source]▶
People are sheep. Someone somewhere used mathematical puzzles as interview questions. That someone became big. Others assumed it was because their interview process was amazing and followed blindly. Soon enough the process started to be gamed.

I'm seeing this trend again in the field of AI where math olympiad participants are being given God like status by a few companies and the media.

Truth is even the most prolific computational scientists will flunk these idiotic interviews.

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1. ascorbic ◴[09 Dec 25 13:56 UTC] No.46204964[source]▶
Yes, and it's mostly the fault of a handful of companies like Google and Facebook that were started by founders who were still in college, so choose interview problems that look like CS algo puzzles instead of anything related to real work.