In this chapter, we learnt that a stack is a simple linear data structure abstracting all elements from the user except the very last one.
A queue is one of the widely used data structures. Using a queue, we can solve many problems, such as distributing time among processors in a round-robin mechanism, job scheduling, a print queue in a printer, messaging systems, asynchronous applications, and so on. A queue uses the FIFO method to operate on its data. In addition to FIFO, a queue can also be represented as a LIFO or FCFS data structure.
If we've a scenario where the buffer is of a fixed size, then we should always go for fixed queue implementation, for example, a queue in a cinema theatre. Here, the seat count is 200, so we can create a buffer size of 200 and, as the people come in, we serve them in the FCFS manner until all 200 seats are full.
Whereas if you can...