Is it possible to implement a queue using a Stack data structure?

A queue can be implemented using two stacks. Let queue to be implemented be q and stacks used to implement q be stack1 and stack2. Method 1 (By making enQueue operation costly) This method makes sure that oldest entered element is always at the top of stack 1, so that deQueue operation just pops from stack1.

Is it possible to implement queue using stack or not if yes provide an efficient approach for it or justify your answer?

We can implement Queue using two Stacks. Two Stacks taken together can help us to get all the operations as supported by Queue. All the use-cases of queue can be achieved by using two stacks.

Does queue follow LIFO or FIFO?

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. 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.

Can you implement stack using queue and queue using stack?

A stack is a linear data structure that follows the LIFO principle, which means that the element inserted first will be removed last. There are two approaches to implement stack using Queue: First, we can make the push operation costly. Second, we can make the pop operation costly.

How do I create a queue operation using Stack?

Implementation of queue can be done using two stacks. Queue using stack can be done in two ways. By making the enqueue (insertion) operation costly….To perform an enqueue operation,

1. Push all the elements from stack1 to stack2.
2. Push the new element to stack2.
3. Pop all the elements from stack2 to stack1.

How a Stack can be implemented using two queues?

Implementation of a stack using two queues Likewise, a queue can be implemented with two stacks, a stack can also be implemented using two queues. The basic idea is to perform stack ADT operations using the two queues. So, we need to implement push(),pop() using DeQueue(), EnQueue() operations available for the queues.

How stack and Queue are implemented together?

To construct a stack using two queues (q1, q2), we need to simulate the stack operations by using queue operations:

1. push (E element) if q1 is empty, enqueue E to q1. if q1 is not empty, enqueue all elements from q1 to q2, then enqueue E to q1, and enqueue all elements from q2 back to q1.
2. pop. dequeue an element from q1.

How a stack can be implemented using two queues?

Where we can use stack and queue?

Use a queue when you want to get things out in the order that you put them in. Use a stack when you want to get things out in the reverse order than you put them in. Use a list when you want to get anything out, regardless of when you put them in (and when you don’t want them to automatically be removed).

What is stack differentiate between stack and queue?

Difference between Stack and Queue

Stack	Queue
The most accessible element is called Top and the least accessible is called the Bottom of the stack	The insertion end is called Rear End and the deletion end is called the Front End.
Simple Implementation	Complex implementation in comparison to stack

How do you implement a stack using Queue to implement a Queue using stack?

Can we implement Queue using stack in C?

Queue using stack can be done in two ways. By making the enqueue (insertion) operation costly. By making the dequeue (deletion) operation costly.