Chapter 8, Problem 44E

Program Plan Intro

Queue:

• Queue is a type of container used to insert and remove an item according to first-in-first-out (FIFO) principle.
• In queue, the elements are entered at the rear end of the queue and removed from the front end of the queue.
• The two operations of queue are,
  • Enqueue – It is the operation to insert an item into the back of the queue.
  • Dequeue – It is the operation to remove an item from the front of the queue.
• Example – Waiting line in a ticket counter because it gives first come first serve basis service.