URL Click Counter

Image placeholderImage placeholderImage placeholderImage placeholderImage placeholderImage placeholder

(This question has been seen in the interviews of the following companies: Google, Reddit, Microsoft, Dropbox, Amazon, Linkedin)

Given the server log as a json string, decode the json string and return the most popular pages in the past 7 days, 30days, 1year...

Get one-to-one training from Google Facebook engineers

Top-notch Professionals

Learn from Facebook and Google senior engineers interviewed 100+ candidates.
Most recent interview questions and system design topics gathered from aonecode alumnus.
One-to-one online classes. Get feedbacks from real interviewers.

Customized Private Class

Already a coding expert? - Advance straight to hard interview topics of your interest.
New to the ground? - Develop basic coding skills with your own designated mentor.
Days before interview? - Focus on most important problems in target company question bank.