Google

The process takes months. The interviewers are very nice. They will give you hints, and normally there are several follow-ups. The difficult part is the follow-ups. Try to get hints if you can't come up with any solutions.

Two phone interviews, mostly about data structures and algorithms. In the first interview, they asked string manipulation questions and a puzzle. In the second interview, they asked about tri-tree implementation. They asked me to implement a tri-tr

It started with a general introduction, and then I jumped to a verbal question. I had to formalize this into a Data Structure and Algorithm (DSA) problem, provide the approach, and then solve it on a text editor, not an IDE.