Where have you seen Data structures in real-time applications?

𝐒𝐭𝐚𝐜𝐤:

1) UNDO option
2) Text editor: you push letter by letter to the stack so you erase back.
3) Recursion(inbuilt stack)

𝐐𝐮𝐞𝐮𝐞:
1) Your browser deletes the history past one month.
2) If you delete a picture on your phone, it will be the “recently delete” folder which says “the images will be deleted permanently after one week”.
Here all the images are stored in the queue so it’s easier to pop from the rear based on the image deletion date.
3) Waiting list: during online registrations, sometimes you’ll be put on the waiting list. basically, all the requests will be stored in the queue.

𝐋𝐢𝐧𝐤𝐞𝐝 𝐥𝐢𝐬𝐭:
1) Browser’s Next and Previous Button: a linked list of URLs
2) music player where you can play the next or previous song. (Doubly linked list).
3) In the ludo game, It has to pass the chance to each player in a circular fashion (circular linked list).

𝐓𝐫𝐞𝐞𝐬:
1) File system: Folders and subfolders (N-ary tree).
2) e-commerce websites : category -> subcategories -> products
3) Auto-suggestion when you google (Trie)

𝐆𝐫𝐚𝐩𝐡𝐬:
1) Uber, Ola cab booking: show nearest available cars (BFS)
2) Maven dependencies build order ( Topological sorting (DFS))
3) While booking bus/flights, you get a list of available routes.
4) In Facebook, users are considered to be the vertices and if they are friends then there is an edge running between them. Facebook’s Friend suggestion algorithm uses graph theory. Facebook is an example of an undirected graph.

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