I believe that this does not fulfill Interface Segregation principle of SOLID principles. There is no need of insertCoin and presButton in some cases. We should make different interfaces if any state does not want to implement a function. Tell me if I am wrong. I would love to get corrected.

Thank you so much, Mr. Riddhi.

Very helpful video, at a time when there is a dearth of LLD resources. Thank you for making these ❣

A much needed content. Very few people are there who create videos on this topic. Thank you for your initiative 😁.

this was highly required. thanks da.

Great explanation! Can we use the same design pattern to design a shopping cart?

need more LLD videos like this ....please

Amazing content as many of the companies are asking LLD questions in their SDE-1 (e.g - freshers) interviews.

Where is the github url to find the code ??

where can i get the code?

Hey could you upload this code to a GitHub repo?

is there any github repo for this design?

do u have a git hub link

Great explanation. Can you please share link to this code repo

instead of throwing illegal state can we sent some warning and be on same state

I really liked the design as well as the explanation. Please create more such LLD design content👍

Great explanation

Can you post the link to GitHub repo?

can we get the source code link as well @Riddhi Dutta

Is this code available somewhere?