I completely agree and see red flags in how the parent describes their interview technique. Interview questions with one solution "that’s pretty clever" are IM

I completely agree and see red flags in how the parent describes their interview technique. Interview questions with one solution "that’s pretty clever" are IMO, bad. Even cliche "easy" fizzbuzz. Ok...so you know modulo. Rationing out hints towards that "one weird trick" sounds slightly like a cat toying with a struggling mouse.