Assume a queue has been implemented "efficiently" with $2$ STACKS. How many pop operations would have happened when performing the following queue operations $($assume this is before the queue is deleted$)?$ Assume that the Queue was initially empty.

enqueue$(8)$

dequeue$()$

enqueue$(6)$

enqueue$(7)$

front$()$

enqueue$(5)$

dequeue$()$

enqueue$(3)$

enqueue$(0)$

front$()$

enqueue$(9)$

dequeue$()$

Answer rating: 100% (QA)

To implement a queue efficiently using two stacks we can use one stack for enqueue operations and an... View the full answer