Google

Interviews include a recruiter, HR, hiring manager, peer review, and an on-site interview. Except for the recruiter and HR interviews, all the rest are in the early morning, around 5 AM.

To speak in general terms, I have interviewed with Google Health (Google's medical devices wing) a few times now, and almost every time, I got the same impression. Regardless of how experienced and talented you are, Google's recruiters often pitch a

Round 1 (Phone Screen): Given an array of integers, find the length of the longest subarray with sum equal to 0. (Used prefix sum + hashmap approach.) Round 2 (Technical Interview): Given a binary tree, return the diameter of the tree (longest path