I agree if it was asked with no context ("What's the difference between String and string?"), I wouldn't be sure how to answer either! (But in the OP, wasn't it

I agree if it was asked with no context ("What's the difference between String and string?"), I wouldn't be sure how to answer either! (But in the OP, wasn't it the author who asked the question?) It reminds me of an interview question I was asked once (thought not as bad as String/string): "What is the time complexity to print every node in a binary tree?"