Many hard LeetCode problems are easy constraint problems

Posted by mpweiher 9/12/2025

Many hard LeetCode problems are easy constraint problems(buttondown.com)

679 points | 533 commentspage 7

liqilin1567 9/13/2025|

[flagged]

supriyo-biswas 9/13/2025||

I understand that this is an advertisement for your product, but please do not do this here. Thank you.

liqilin1567 9/13/2025|||

You're right to point that out, thanks for keeping things honest. My intention was simply to offer a helpful TL;DR for a very long thread, as it's a feature of a project I'm working on (mentioned in my profile).

I'm trying to contribute value without being spammy. If this crosses a line for the community, I'm happy to listen and adjust.

tomhow 9/14/2025||

It's a long-established norm on HN that we don't want summaries and TL;DRs. I explained the reasoning recently here: https://news.ycombinator.com/item?id=44946681

coherentpony 9/13/2025|||

Honestly, I didn’t realise it was an advert until you told me it was.

MichaelZuo 9/13/2025||

It seems like a moot point since there are already too many people who can clear leetcode hard than there are available positions that require it.

It’s like scoring over 2 standard deviations on an IQ test, great, but by definition millions of people can do that.

Edit: I’ve heard HFT firms are now moving to doing it on paper in person to prevent any kind of cheating for their interviews, which would make it a better signal.

liqilin1567 9/13/2025||

Yes,that is better. From my own experience, LeetCode does indeed enhance one's logical thinking and coding skills. I believe this is the reason why FAG has always tested algorithm and data structure skills in interviews over the years.

afro88 9/12/2025|

A little off topic, but I don't know much about greedy algorithms or dynamic programming. I got curious. This conversation was very insightful and now it's very clear in my mind: https://chatgpt.com/share/68c46d0b-8858-8004-aa03-f7ce321988...