Plus I feel like it's on the company to provide good problems to solve. If it's another FizzBuzz how could you not expect some candidates to be familiar with it already?
Ya, I think live coding is a horrible interview tactic anyway. So if a company is caught using something that’s widely known and it allows someone to game their process it further confirms that it’s a bad process.
Yes, the expectation of people being familiar with something shouldn't change the outcome of the interview. The questions I ask now aren't heavily influenced by whether they've seen the problem or not before.
Sure, it will make some difference, but that's what experience is for.
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