Dude claimed that he had good practise of DS and problem solving.
My senior gave him a tough one to solve. Couldn't. Started shouting in between the interview that we tricked him with wrong question. Senior sat him down, told him how it was a right question. Dude got pissed. Stormed out of our office. Posted a review on Glassdoor calling our interview process rubbish and unnecessarily difficult.
HAAH!