It honestly is shocking. I tend to ask a question that I think would be an easy 101 homework assignment, and easily a third of candidates fail it so poorly I could end the interview right there. Another third fail, but close enough to where there's a bit of hope if they did the rest of the interview perfectly.

It's basically a word problem that can be solved with a for loop, and you wouldn't believe the number of people who hard code for the values in the list instead of just looping through it (think 10 if statements).