The bread and butter of technical interview questions. If you're going for a job at Google, Microsoft, Amazon or Facebook - you can be almost guaranteed to be asked a question that used a binary tree of some kind.
In this video we'll get into the more complex data structures called "Graphs". The simplest graph is known as a tree and you likely know exactly what that is because you're used to looking for files in your computer - which are stored in a tree data structure.
There are different kinds of trees with different rules to them. We'll explore the common ones including the plain old tree and the binary tree - one that you'll probably have to use in your interview.