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What are the basic operations we can do with a queue?
Mainly the following four basic operations are performed on queue: Enqueue: Adds an item to the queue. If the queue is full, then it is said to be an Overflow condition. Dequeue: Removes an item from the queue.
What is getFront operation in queue explain?
getFront: Retrieves the front item in the deque. getLast: Retrieves the last item in the queue. isEmpty: Checks if the deque is empty. isFull: Checks if the deque is full.
What happens when queue is full?
In the beginning when the queue is empty, FRONT and REAR point to 0 index in the array. REAR represents insertion at the REAR index. When Queue Full : ( REAR+1)%n = (4+1)%5 = 0 FRONT is also 0. Hence ( REAR + 1 ) %n is equal to FRONT.
Is traversal possible in queue?
Queue has special property where you can push from one end and pop from another end. Like in level order traversal we mark nodes visited and pop them, From other end we push the elements to be mark visited, This is what level order traversal does.
What is queue explain with example?
The simplest example of a queue is the typical line that we all participate in from time to time. We wait in a line for a movie, we wait in the check-out line at a grocery store, and we wait in the cafeteria line (so that we can pop the tray stack). Computer science also has common examples of queues.
What is an array based queue?
Array based Queue c++ simple project List of items arranged on basis of first in and first out principal is called queue. It has 2 ends. Data can be considered as to pass through hollow cylinder. Data enters from one end and leaves from another end. Data only moves in one direction.
What is queue in programming?
A queue is a useful data structure in programming. It is similar to the ticket queue outside a cinema hall, where the first person entering the queue is the first person who gets the ticket.
What is a circular queue program?
C++ Program to Implement Circular Queue. A queue is an abstract data structure that contains a collection of elements. Queue implements the FIFO mechanism i.e the element that is inserted first is also deleted first. A circular queue is a type of queue in which the last position is connected to the first position to make a circle.
What is circular queue in Java?
Circular Queue. A circular queue is an abstract data type that contains a collection of data which allows addition of data at the end of the queue and removal of data at the beginning of the queue.