Front: It is used to get the front element from the Queue. Rear: It is used to get the rear element from the Queue. enQueue(value): This function is used to insert the new value in the Queue. The new element is always inserted from the rear end.
What are the use of front and rear pointers in circular queue implementation?
Front: Get the front item from queue. Rear: Get the last item from queue. enQueue(value) This function is used to insert an element into the circular queue. In a circular queue, the new element is always inserted at Rear position.
Where is front and rear in queue?
The dequeue stands for Double Ended Queue. In the queue, the insertion takes place from one end while the deletion takes place from another end. The end at which the insertion occurs is known as the rear end whereas the end at which the deletion occurs is known as front end.
What will be the value of front and rear?
Initially the queue is empty and value of front and rear is both -1. When an element is inserted the value of rear will be incremented by 1 and the element would be inserted at the array index specified by the rear variable.
What is difference between queue and circular queue?
The main difference between linear queue and circular queue is that a linear queue arranges data in sequential order, one after the other, while a circular queue arranges data similar to a circle by connecting the last element back to the first element.
What is heap in C?
In computer science, a heap is a specialized tree-based data structure which is essentially an almost complete tree that satisfies the heap property: in a max heap, for any given node C, if P is a parent node of C, then the key (the value) of P is greater than or equal to the key of C.
What is push operation?
Push operation refers to inserting an element in the stack. Since there’s only one position at which the new element can be inserted — Top of the stack, the new element is inserted at the top of the stack. POP Operation. Pop operation refers to the removal of an element.
How does the circular queue work?
The circular queue work as follows: 1 two pointers FRONT and REAR 2 FRONT track the first element of the queue 3 REAR track the last elements of the queue 4 initially, set value of FRONT and REAR to -1 More
What is the difference between frontfront and rearfront queue?
Front: The first pointer points to the first element in the queue. Rear: The rear pointer points to the last element in the queue. Enqueue: inserting an element into the queue is called enqueue. Dequeue: It is the process of deleting an element from the queue.
How do you know if the queue is full or not?
1.) If front = 0 and rear = MAX – 1, then the circular queue is full. Look at the queue illustrates this point. 2.) If rear != MAX – 1, then rear will be incremented and the value will be inserted as illustrated. 3.) If front != 0 and rear = MAX – 1, then it means that the queue is not full.
What is the use of the rear pointer in a queue?
Rear: The rear pointer points to the last element in the queue. Enqueue: inserting an element into the queue is called enqueue. Dequeue: It is the process of deleting an element from the queue. Check if the queue is completely filled or not.
