The Fake Geek's blog

Define amazing number as: its value is less than or equal to its index. Given a circular array, find the starting position, such that the ...

Given two (binary) trees, return the first pair of non-matching leaves Tree 1: A, B, C, D, E, null, null Tree 2: A, D, B Output: (E,B) D...

Functionality This is a very broad question, the first thing is to figure out what's the purpose of this hosing service, is it used fo...

News feed is a very interesting problem, it looks very easy, but it can have lots of components. Functionality The basic functionality ...

What is typeahead? That's the search bar on top of the Facebook page. Easy, right? Now the question is how to design it. Unlike ...

1. Understand requirement: Start from understanding basic functionality. For example, If we need to design a tiny url, we know we want to m...

Explain how you would design a chat server. In particular, provide details about the various backend components, classes, and methods. What...