web w/ exercises

Question

know some good web with exercises by topic?
f.ex.: if im learning vectors, exercises w vectors.
even w more generic topics like data structure exercises, etc.
if its in interactive format, better.
not solved exercises, but corrected.
saw judge webs that are ok but got exams and all this stuff, its another focus.
some good place to exercise?
thx

Answer 1

I'm not too sure if this list contains a site which fully matches your description, but here goes:
https://www.sololearn.com/Discuss/437973/?ref=app
I use CodeWars and IIRC, the katas are also categorised according to related topics like you mentioned.