Queue

What is queue in C++ STL? A queue is a linear list of elements in which deletions can take place only at one end called the front, and insertions can take place only at the end called the rear. The...

What is Priority Queue? In the case of the max heap, priority queues are a type of container adaptors, specifically designed such that its first element is always the greatest of the elements it co...

Problem Statement: Given an array nums, return the kth largest element in the array. Examples Example 1: Input: nums = [1, 2, 3, 4, 5], k = 2 Output: 4 Explanation: The 2nd largest number in the li...

Problem Statement: Implement a First-In-First-Out (FIFO) queue using a singly linked list. The implemented queue should support the following operations: push, pop, peek, and isEmpty. Implement the...

Problem Statement: Given a queue with several elements, Your task is to reverse the queue.Operations allowed on queue data-structure : empty() : Checks if a queue is empty or not. enqueue(x) : Add...

What is Deque? Double Ended Queue which is also called Deque is a type of queue data structure in which  insertion and deletion of elements can be either in front or rear.  It doesn’t f...

What is Queue? A queue is a linear list of elements in which deletions can take place only at one end called the front, and insertions can take place only at the end called the rear. The queue is a...

Problem Statement: Implement a double-ended queue (deque) using a fixed-size array supporting insertion and deletion from both front and rear ends. Examples Example 1: Input: insertRear(10) insertR...

Problem Statement: Implement a First-In-First-Out (FIFO) queue using an array. The implemented queue should support the following operations: push, dequeue, pop, and isEmpty. Implement the ArrayQue...

Problem Statement: Implement a First-In-First-Out (FIFO) queue using two stacks. The implemented queue should support the following operations: push, pop, peek, and isEmpty. Implement the StackQueu...