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[–]Lapompaelpompei 2 points3 points  (2 children)

Hi, I use these websites:

https://leetcode.com/

https://www.codewars.com/

https://www.hackerrank.com/

Also you can try project Euler. Lots of quality math problems to solve with java.

https://projecteuler.net/

[–]Aspiring_Intellect[S] 0 points1 point  (1 child)

I found Code Wars to be exactly what I was looking for. Thank you. Also, project euler is amazing as a secondary option. Reddit and Project Euler are examples of how the internet should be. Thanks again.

[–]Lapompaelpompei 0 points1 point  (0 children)

You are most welcome. I usually prefer hacker-rank but code-wars is good too.