Mar 28, 2025 · Given a stack that supports push and pop operations, your task is to implement a queue using one or more instances of that stack along with its operations. A queue can be implemented using two stacks. Let the queue be represented as q, and the stacks used for its implementation be s1 and s2.

Mar 25, 2025 · Implement a stack using queues. The stack should support the following operations: Push (x): Push an element onto the stack. Pop (): Pop the element from the top of the stack and return it. A Stack can be implemented using two queues. Let Stack to be implemented be ‘s’ and queues used to implement are ‘q1’ and ‘q2’.

Sep 16, 2008 · Compare the sequence of top-of stacks to a direct array implementation of queue. Keep 2 stacks, let's call them inbox and outbox. Enqueue: Dequeue: Using this method, each element will be in each stack exactly once - meaning each element will be pushed twice and popped twice, giving amortized constant time operations.

How to implement Queue using Stack? Implementation of Queues using Stack in C is a process of creating a queue using Stacks. In this article, we will be using a single stack for the purpose. When a single stack is used for implementing queues recursive stack call used.

We should use stack operations like push, pop, top, size, and isEmpty for implementing queue operations like enqueue, dequeue, and front. In this blog, we have discussed two approaches for implementing queue using two stacks: 1) Dequeue O(1) …

Mar 17, 2025 · Let's understand the implementation of Queue using stacks. In the above stack, we can observe that the topmost element is 3. If we perform the delete operation in the above stack, then the element 3 would be deleted from the stack. On the other hand, the deletion in Queue is performed from the front end and the front element is 5.

Oct 15, 2024 · In this article, we saw that the two approaches to implementing a queue using two stacks both rely on the same idea of leveraging the properties of two LIFO (Last-In-First-Out) stacks to simulate FIFO (First-In-First-Out) queue behavior.

Sep 21, 2023 · In programming, queues are used to implement algorithms like breadth-first search, round-robin scheduling, and more. There are several ways to implement a data structure that combines both a stack and a queue: Using two stacks: We can simulate a queue using two stacks. We call these stacks input and output.

Sep 6, 2019 · Stacks are arrays that follow the LIFO method, while queues are arrays that follow the FIFO method. Essentially, we want our algorithm to get the capabilities of a queue (enqueue and...

Nov 26, 2021 · Queue is First In First Out data structure. Push and pop operations take place through two ends of the queue. It supports enqueue, dequeue, peek operations. So, if you clearly observe, we would require two stacks to implement the queue, one for en queue and another for de queue operation.