I've seen some Indians/Asians with leetcode linked on their LinkedIn. Even when they only solved 10 questions. Is this common practice for people educated outside of the US?
Leetcode is the real kaggle
Keagles are real
It’s stupid because your interviewer will know you solved the same problem before
you think interviewers don't have anything else to do?
It neutral at best or harmful at worst. Interviewer could wonder why you are trying so hard for interviews and not personal projects.
Might be good if the performance in contests is impressive.