## How do you represent a queue using an array?

To implement a queue using array, create an array arr of size n and take two variables front and rear both of which will be initialized to 0 which means the queue is currently empty. Element rear is the index upto which the elements are stored in the array and front is the index of the first element of the array.

## What is queue of array in C++?

A queue is a linear data structure in which the order of operation is FIFO (first in first out). The array is a data structure that contains elements of the same data type, stored in continuous memory location. In queue the insertion and deletion operations as done at opposite ends of the queue.

Does a queue use an array?

A queue data structure can be implemented using one dimensional array. The queue implemented using array stores only fixed number of data values. The implementation of queue data structure using array is very simple.

Why is linear implementation of queue using array inefficient?

-The space of the array, which is used to store queue elements, can never be reused to store the elements of that queue because the elements can only be inserted at front end and the value of front might be so high so that, all the space before that, can never be filled.

### How will you implement 2 queues in a single array?

A simple way to implement k queues is to divide the array in k slots of size n/k each, and fix the slots for different queues, i.e., use arr[0] to arr[n/k-1] for the first queue, and arr[n/k] to arr[2n/k-1] for queue2 where arr[] is the array to be used to implement two queues and size of array be n.

### What is linear queue?

A linear queue is a linear data structure that serves the request first, which has been arrived first. It consists of data elements which are connected in a linear fashion. It has two pointers, i.e., front and rear, where the insertion takes place from the front end, and deletion occurs from the front end.

Is an array and a queue the same?

Queue can contain elements of different data type. Array contains elements of same data type. The stack can contain elements of the different data types. Different types of Queues are circular queue, priority queue, doubly ended queue.

What is queue in C++ with example?

Queue is a data structure designed to operate in FIFO (First in First out) context. In queue elements are inserted from rear end and get removed from front end. Queue class is container adapter. Container is an objects that hold data of same type. Queue can be created from different sequence containers.

## What are the disadvantages of linear queue?

In a linear queue, the traversal through the queue is possible only once,i.e.,once an element is deleted, we cannot insert another element in its position. This disadvantage of a linear queue is overcome by a circular queue, thus saving memory. first-out (FIFO) principle.

## Is it possible to implement 2 stacks in an array?

A simple way to implement two stacks is to divide the array in two halves and assign the half space to two stacks, i.e., use arr[0] to arr[n/2] for stack1, and arr[(n/2) + 1] to arr[n-1] for stack2 where arr[] is the array to be used to implement two stacks and size of array be n.

How to implement queue using array in C programming?

Implementation of Queue using Array in C. Implementation of Queue operations using c programming. The Queue is implemented without any functions and directly written with switch case. Easy code for Queue operations using c. #include #define n 5 int main() { int queue[n],ch=1,front=0,rear=0,i,j=1,x=n; printf(“Queue using Array”);

What is a linear queue?

What Linear Queue? It is a linear data structure. It is considered as sequence of items. It supports FIFO (First In First Out) property. A Container of items that contains elements of queue. A pointer front that points the first item of the queue. A pointer rear that points the last item of the queue. Insertion is performed from REAR end.

### What is the structure of a queue?

It is a linear data structure. It is considered as sequence of items. It supports FIFO (First In First Out) property. It has three components: A Container of items that contains elements of queue. A pointer front that points the first item of the queue. A pointer rear that points the last item of the queue. Insertion is performed from REAR end.

### What is a queue in Python?

Queue is a linear data structure where elements are ordered in special fashion i.e. FIFO (First In First Out). Which means element inserted first to the queue will be removed first from the queue. In real life you have come across various queue examples.