## How do you implement an array based queue?

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 array implementation queue?

In array implementation of queue, we create an array queue of size n with two variables top and end. Now, initially, the array is empty i.e. both top and end are at 0 indexes of the array. And as elements are added to the queue (insertion) the end variable’s value is increased.

**What is array based queue?**

Array-based Queue. – We can use an array of fixed capacity to store items as a queue. • enqueue: append new items to the end of the queue • dequeue: remove items from the front of the queue, and shift the rest of the items. – Enqueue is okay, but dequeue is not efficient due to the shifting.

**What are the problems of array implementation of queue?**

Drawback of array implementation Memory wastage : 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.

## Is a queue an array?

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.

### How will you implement two queues in a single array explain?

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.

**How do you implement an array?**

Obtaining an array is a two-step process. First, you must declare a variable of the desired array type. Second, you must allocate the memory that will hold the array, using new, and assign it to the array variable. Thus, in Java all arrays are dynamically allocated.

**What is the advantage and disadvantages of queue?**

The advantages of queues are that the multiple data can be handled, and they are fast and flexibility. &nbps Disadvantages of queues: To include a new element in the queue, the other elements must be deleted.

## What is the difference between array and queue?

Enqueue means to insert an item into the back of the queue, dequeue means removing the front item. The picture demonstrates the FIFO access. The difference between stacks and queues is in removing….

QUEUES | ARRAY | STACK |
---|---|---|

Queue has a dynamic and fixed size. | Array has a fixed size. | Stack has a dynamic and fixed size. |

### What is the difference between stack array and queue?

Queues are based on the FIFO principle, i.e., the element inserted at the first, is the first element to come out of the list. Stacks are based on the LIFO principle, i.e., the element inserted at the last, is the first element to come out of the list. Queue has a dynamic and fixed size. Array has a fixed size.

**How can we describe an array in the best possible way?**

02. How can we describe an array in the best possible way? Explanation: The array stores the elements in a contiguous block of memory of similar types. Therefore, we can say that array is a container that stores elements of similar types.

**How is an array implemented in a queue?**

Array implementation of queue (Simple) In queue, insertion and deletion happen at the opposite ends, so implementation is not as simple as stack . 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.

## What are the pros and cons of array implementation?

Pros of Array Implementation: Easy to implement. Cons of Array Implementation: Static Data Structure, fixed size.

### How is queue implemented in stack and enqueue?

See this for more detailed applications of Queue and Stack. For implementing queue, we need to keep track of two indices, front and rear. We enqueue an item at the rear and dequeue an item from the front. If we simply increment front and rear indices, then there may be problems, the front may reach the end of the array.

**What are the basic operations of the 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.