Update 5 (10/31):
Have you ever wondered how a web crawler works in real life? Try this neat little multithreading problem: Web Crawler Multithreaded.

Update 4 (10/17):
Just published a classic and very fun concurrency problem: The Dining Philosophers Problem. What's next? 🤔Please let us know in the comments section below!

Update 3 (9/16):
The classic Fizz Buzz problem has a multithreaded version: Fizz Buzz Multithread. Stay tuned for more!

Update 2 (9/11):
Design Bounded Blocking Queue (Premium) has just been published. Please try it and let us know what you think! Stay tuned for more concurrency problems. 😁

Update 1 (8/9):
We've added C# support to Print in Order. We will continue adding more language support to concurrency problems, please stay tuned! 😁

Dear LeetCoders,

We’ve just released the first set of beta problems for our new Concurrency category!

You can find them by clicking here or by selecting the Concurrency category on the Problems page.

We are super excited to see what you think of those, so if you have any feedback for us regarding those problems, please leave a comment under this post.

Last but not least, if you have an interesting concurrency problem, we'd like to hear from you! Once we approve and publish your problem, you will be awarded 1000 LeetCoins

Thank you, and happy coding!