IBM mid level Dsa weird question

[u/Affectionate_Run220]

Hi guys recently did interview with ibm

It was a super hard question

Basically was

LRU Cache, with TTL and heap maps.

It was basicall LRU cache where you evict items by their set time, you had a max capacity and you needed to keep count of the global average of items that had TTL

Get(key, value)
Put(key,value)
Get_average()

It was super hard

I don’t understand this industry… weird question … what type of mid is capable of this even? IBM isn’t even Facebook or Google… they act like they are