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# Chapter 4.   Arrays and linked lists

![Arrays and linked lists](../assets/covers/chapter_array_and_linkedlist.jpg){ class="cover-image" }

!!! abstract

    The world of data structures resembles a sturdy brick wall.

    In arrays, envision bricks snugly aligned, each resting seamlessly beside the next, creating a unified formation. Meanwhile, in linked lists, these bricks disperse freely, embraced by vines gracefully knitting connections between them.

## Chapter Contents

- [4.1   Array](https://www.hello-algo.com/en/chapter_array_and_linkedlist/array/)
- [4.2   Linked list](https://www.hello-algo.com/en/chapter_array_and_linkedlist/linked_list/)
- [4.3   List](https://www.hello-algo.com/en/chapter_array_and_linkedlist/list/)
- [4.4   Memory and cache](https://www.hello-algo.com/en/chapter_array_and_linkedlist/ram_and_cache/)
- [4.5   Summary](https://www.hello-algo.com/en/chapter_array_and_linkedlist/summary/)