If we have not maintained size variable in the circular queue(implemented using arrays) then how can we calculate the size of the queue.front: index of the front element.rear: index of the last element. a) size = rear - front +1b) size = size of array - (front - rear) + 1

In a queue implemented using a circular array, if front = rear, what can be inferred about the queue?The queue is full.The queue is empty.The queue has exactly one element.Either the queue is full or empty, depending on the implementation.

A Circular queue of capacity 'n – 1' elements is implemented with an array of 'n' elements. Assume that the insertion and deletion operations are carried out using REAR and FRONT as array index variables, respectively. Initially, REAR = FRONT = 0. The conditions to detect queue full and queue empty are?

Which of the following is true about a circular queue?It requires more space than a regular queue.It avoids the problem of wasted space in a regular queue.It can be implemented only using arrays.It can only store integers.

In a circular array implementation of a queue, the remainder operator (%) can be used to calculate the value of the rear reference in an enqueue operation. A. True B. False

Suppose that Q is a queue implemented with a circular array A,  initially empty (with size/capacity = 0). You run the following operations in the order given:1. Q.enqueue(7) 2. Q.enqueue(42) 3. Q.enqueue(3) 4. Q.dequeue()5. Q.enqueue(10)6. Q.first()7. Q.enqueue(5)8. Q.enqueue(30)9. Q.enqueue(15)10. Q.dequeue()11. Q.dequeue()12. Q.dequeue()13. Q.dequeue()14. Q.dequeue()Assuming that insertion and deletion in dynamic arrays use the resizing strategy we have seen during the lectures, describe the entries of the array A after performing the above operations, separating each entry by a comma and no space. If an entry is empty, write "None" (case-sensitive). For example, if the array was [1, 2, None, None], then write "1,2,None,None", omitting the double quotes.