Data Structures quiz

Test your Data Structures knowledge with a free interactive quiz — 50 questions with answers and explanations. No signup needed to play.

What defines a binary tree?

1. What defines a binary tree?
2. A weighted graph differs from an unweighted graph in that:
3. What does an in-order traversal of a Binary Search Tree produce?
4. In a tree, what is the "root"?
5. What does Big O notation describe?
6. A string in most programming languages can be treated as:
7. In a directed graph, an edge from A to B:
8. A Set (e.g. `Set` in JS, `set` in Python) primarily supports:
9. In JavaScript (and many other languages), passing an object/array to a function passes:
10. What is the time complexity of accessing an element by index in a contiguous array?
11. What is the difference between "depth" and "height" in a tree?
12. A stack is a:

More quizzes