[johnnyb9]

Just curious, has anyone ever had a candidate actually fail FizzBuzz in front of them? I think the original statement was something like 90% of candidates can't do it. In my experience, every single candidate I have ever given that question succeeds. When I am asked FizzBuzz on an interview, I am actually insulted.

[boring_twenties]

Not FizzBuzz, and not me personally, but from someone I worked with and I have 0 reason to believe is lying:

After a few disappointing responses to better questions, interviewer decides to give a "freebie" and asks for a function that determines whether an integer is odd or even.

Candidate produces something that loops from 0 to the provided integer, incrementing two separate counters, then comparing them at the end.

Interviewer manages to stammer out something like "are you sure there isn't a more efficient way to solve this?"

Guy furrows his brow for a few minutes more, then a light bulb of sorts goes on, and he declares "Of course! ..."

"... I only need one counter!"

[Apocryphon]

That seems more like a failure of mathematical reasoning than in programming.

[isbvhodnvemrwvn]

Not fizzbuzz, but at one of my past companies we did a similar low complexity problem (use any language you fancy, google if you need to, you get a list of things, filter them by some attribute and group it by another, print out the list per group) during a phone screen, and people did fail it. Typically doesn't happen in later interviews, unless people have a complete mental breakdown due to stress.