juniorStacks
What is the 'Top' of the stack?
Updated Apr 28, 2026
Short answer
The pointer or reference to the most recently added element.
Deep explanation
Stacks are fundamental in computer science for managing nested or ordered data. The pointer or reference to the most recently added element. They ensure that the last item processed is the first one returned, maintaining a strict temporal order.
Real-world example
Back button functionality in a web browser.
Common mistakes
- Forgetting to check for emptiness before popping, causing a runtime error.
Follow-up questions
- What is the space complexity?