Spoj
CodinGame
HackerRank
LeetCode
Project Euler
CodeSignal
Codewars
Coderbyte
DMOJ
LeetCode
HackerRank
Codewars
Codechef
Coderbyte
CodeSignal
CodeForces
Based on our record, DMOJ seems to be a lot more popular than Spoj. While we know about 11 links to DMOJ, we've tracked only 1 mention of Spoj. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Have you looked at spoj.com? It has a fair amount of different problems, some of them are pretty creative, you can take an inspiration from that. Source: about 3 years ago
For CS, you'll have a headstart if you have a bit of experience with Python and problem-solving. Search around for basic material on Python and if you have the time, attempt some problems on https://dmoj.ca/. Source: 10 months ago
Dmoj.ca ! It's meant more so for competitive coding but some of the problem sets they have fall under the Cryptography category. Source: 11 months ago
The first type of practice is general problem solving. This is where you build up a strong intuition of problem and develop general problem solving techniques (but not memorising a huge list of techniques). Of course, the only way to improve is to do lots of problems / contests. For those who are more interested in competitive programming, I really like dmoj.ca (they host contests there as well, sometimes I author... Source: over 1 year ago
Personally, I’ve heard good stuff about DMOJ https://dmoj.ca/ Hope it helps :). Source: over 1 year ago
Sign up for an account on dmoj.ca or similiar online judge website and do the problems there. They have ccc problems and waaay more that you can get your solutions judged instantly. Source: almost 2 years ago
CodinGame - CodinGame provides users with a fun and effective way to learn coding that eschews the rigid structure of traditional teaching methods.
LeetCode - Practice and level up your development skills and prepare for technical interviews.
HackerRank - HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.
Codewars - Achieve code mastery through challenge.
Project Euler - Project Euler is a series of challenging mathematical/computer programming problems that will...
Codechef - CodeChef is a not-for-profit educational initiative by Directi, an Indian software company. It is a global programming community that fosters learning and friendly competition, built on top of the world’s largest competitive programming platform.