very surprised this project is still releasing problems weekly - I remember this being up when I was in high school. maybe I'll pick it up again since I only did the first ~30 or so back then.
Project Euler
51–60 of 142 posts
Re: Project Euler
#52So much more fun than leetcode. OTOH, unlikely to help you in an interview.
Re: Project Euler
#53The most fun on this site is solving a problem and then having your mind blown by solutions in Apl/j/k and trying to guess what they mean without knowing anything about those languages
Even better than the crazy languages, is seeing some fundamental math used to prevent having to do a ridiculously expensive search. That said, raw brute force often did far better than you'd like to admit.
The biggest thing I learned from PE was that neither elegant theory nor brute force had a monopoly on successful optimization strategies. It's been something I've carried with me ever since and has over and over again proven its value.
A real gem of a resource.
Re: Project Euler
#54Are there other similar sites? I remember this one, for bioinformatics
Re: Project Euler
#55No one tells you that they delete inactive accounts. I used to have over 300 solved problems htere. Now it is all gone, all the effort, but the skill remained of course.
I remember there were data loss, but my account appears to have been recovered. You may try to login again, and with luck, like me you will get back your history.
Re: Project Euler
#56I think a hat-tip is due to freeCodeCamp for introducing Project Euler (along with Rosetta Code) to a new generation of programmers:
https://www.freecodecamp.org/learn/project-euler/#project-eu...
Re: Project Euler
#57I wrote Problem 371, https://projecteuler.net/problem=371 , as a high school student in 2012!
I'm so happy to have spent twenty years of my life learning math and solving problems on Project Euler and elsewhere.
Re: Project Euler
#58No one tells you that they delete inactive accounts. I used to have over 300 solved problems htere. Now it is all gone, all the effort, but the skill remained of course.
So, I gather that you treated your solutions as throw-away code, rather than keeping them? Kind of surprising, considering that some problems build off of each other, or otherwise benefit from sharing code; you never know when the code for one solution could be useful later. For example, a prime number generator/tester is necessary for many of the problems.
(I have all my solution code, in source control no less, so if I ever lost my account, I could just run them all and re-enter the solutions.)
Re: Project Euler
#59very surprised this project is still releasing problems weekly - I remember this being up when I was in high school. maybe I'll pick it up again since I only did the first ~30 or so back then.
Not only are they still releasing problems weekly, they have a long backlog of problems waiting for release. I submitted a problem back in April 2024, and it didn't get published until October 2025 (problem 963). There's an excellent core development team that works with problem-submitters to get problems tuned up for Project Euler.
Re: Project Euler
#60[deleted]