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r/AskComputerScience is a subreddit with 142k members. Its distinguishing qualities are that the community is huge in size.
Ask Computer Science Questions And Get Answers! This subreddit is intended for questions about topics that might be taught by a computer science department at a university.
Popular Themes in r/AskComputerScience
#1
Advice Requests
: "How does my phone calculator get 10^10000 + 1 - 10^10000 right ?"
40 posts
#2
Solution Requests
: "Strategies to deal with VERY large hash tables?"
8 posts
#3
Ideas
: "2000 elo chess engine"
2 posts
#4
Opportunities
: "Anyone interested in being partners for a startup?"
2 posts
#5
News
: "Are we reliving the transistor wars of the mid-20th century?"
1 post
Popular Topics in r/AskComputerScience
#1
Cs
: "30 y/o going into Cs, need some advice on AI."
10 posts
#2
Computer Science
: "A lot of algorithms in Computer Science or equations from maths are derived from physics or some other field of science."
9 posts
#3
Ai
: "How did we go from ML/Ai being mostly buzzwords to LLMs taking over everything almost overnight?"
9 posts
#4
Algorithm
: "Which actually used Algorithm has the worst time complexity?"
5 posts
#5
Data
: "REPOST: Need Data From CS Students"
4 posts
#6
Programming
: "What’s an old-school Programming concept or technique you think deserves serious respect in 2025?"
4 posts
#7
Laptop
: "what Laptop do yall use?"
4 posts
#8
Algorithms
: "A lot of Algorithms in computer science or equations from maths are derived from physics or some other field of science."
3 posts
#9
Turing Machine
: "When has a Turing Machine rejected an input string?"
3 posts
#10
Project
: "Final Year Computer Science Project Ideas: Innovative and Unique Project to build using AI."
3 posts
Member Growth in r/AskComputerScience
Yearly
+60k members(73.9%)
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