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---
comments: true
icon: material/stack-overflow
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# Chapter 5.   Stack and queue
![Stack and queue](../assets/covers/chapter_stack_and_queue.jpg){ class="cover-image" }
!!! abstract
A stack is like cats placed on top of each other, while a queue is like cats lined up one by one.
They represent the logical relationships of Last-In-First-Out (LIFO) and First-In-First-Out (FIFO), respectively.
## Chapter contents
- [5.1   Stack](stack.md)
- [5.2   Queue](queue.md)
- [5.3   Double-ended queue](deque.md)
- [5.4   Summary](summary.md)