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 is recursion?

1. What is recursion?
2. A Set (e.g. `Set` in JS, `set` in Python) primarily supports:
3. What does a doubly linked list have that a singly linked list does not?
4. What does Big O notation describe?
5. When would a linked list be preferred over an array?
6. A priority queue is most often implemented with which data structure?
7. In a directed graph, an edge from A to B:
8. A weighted graph differs from an unweighted graph in that:
9. What is the Binary Search Tree (BST) property?
10. A static array differs from a dynamic array in that:
11. A string in most programming languages can be treated as:
12. What defines a binary tree?

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