Google does give you the option of using a Chromebook with a really basic text editor on it, but it's the same whiteboard problems they want you to solve. There

Google does give you the option of using a Chromebook with a really basic text editor on it, but it's the same whiteboard problems they want you to solve. There just isn't the friction of having to hand write code on a whiteboard. From my experience, they only care that you can recall individual lectures from a sophomore-level college class. More rigorous, yes, but I'm not sure about harder. You can memorize CTCI and ace the interview, because that's the only thing they do during the onsite.