hello-algo/en/docs/chapter_stack_and_queue/index.md

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# Stack and queue
![Stack and queue](../assets/covers/chapter_stack_and_queue.jpg)
!!! 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.