juniorLinked Lists
What is a Linked List?
Updated Apr 28, 2026
Short answer
A linear data structure where elements are stored in nodes, and each node points to the next node.
Deep explanation
Linked lists are the foundation of dynamic data structures. A linear data structure where elements are stored in nodes, and each node points to the next node. They provide O(1) insertion at the front, which is superior to O(n) in arrays.
Real-world example
Undo functionality in text editors.
Common mistakes
- Forgetting to handle the case where the list is empty (Null check).
Follow-up questions
- What is the search complexity?