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# Review of Key Data Structures

Let's review the key data structures we've covered in previous lectures. 

## Stack

- A data structure that follows the `Last In First Out (LIFO)` method, where the most recently added data is the first to be removed.

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## Queue

- A data structure that follows the `First In First Out (FIFO)` method, where the earliest added data is the first to be removed.

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## Linked List

- A data structure consisting of Nodes that contain data and are linked together by Pointers.

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## Hash Table

- A data structure that maps `Keys` to `Values` and uses a hash function to determine the storage location of the keys.

Review of Key Data Structures