How to Ace the Google Interview: Ultimate Guide

For both the Google phone interview and the onsite, you will be expected to produce syntactically correct code in the absence of an IDE. For the phone interview, it will be on a Google document, and for the onsite interview, it will be writing code on a whiteboard. Therefore, when practicing for the Google interview, it is critical to practice in the absence of any editor and under the time constraints that you would encounter in the interview.

Source: www.byte-by-byte.com