Consider the Deque ADT (a double-ended queue): Deque: addFront (x) adds x to the front of the deque removeFront () removes the element at the front of the deque addBack (x) adds x to the back of the deque removeBack() removes the element at the back of the deque size() returns number of elements in deque Select all options that allow for an efficient implementation (of all methods) based a the discussions from class. For any array implementation, you can assume the array large enough so that making a larger one is not needed when pushing an item to the stack. You can assume that a linked list will have both a head and tail reference. Using an array with the front of the deque at the front of the array. Using an array with the front of the deque at the back of the array. Using a singly linked list with the front of the deque at the head of the list. Using a singly linked list with the front of the deque at the tail of the list. None of these choices allows for an efficient implementation of all methods.

Consider the Deque ADT (a double-ended queue): Deque: addFront (x) adds x to the front of the deque removeFront () removes the element at the front of the deque addBack (x) adds x to the back of the deque removeBack() removes the element at the back of the deque size() returns number of elements in deque Select all options that allow for an efficient implementation (of all methods) based a the discussions from class. For any array implementation, you can assume the array large enough so that making a larger one is not needed when pushing an item to the stack. You can assume that a linked list will have both a head and tail reference. Using an array with the front of the deque at the front of the array. Using an array with the front of the deque at the back of the array. Using a singly linked list with the front of the deque at the head of the list. Using a singly linked list with the front of the deque at the tail of the list. None of these choices allows for an efficient implementation of all methods.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Similar questions

In a linked list, devise an approach that will remove all nodes with the same key.
A stack-ended queue, sometimes known as a steque, is a data type that allows push, pop, and enqueue operations. Make an API for this ADT. Create a linked-list implementation.
8. Write down the insertBefore method which inserts a new element in the list before the node containing the given element. The method takes as parameters a dummy headed doubly linked circular list, the element existing in the list and new element to be added. public void insertBefore (Node head, Object elem, Object newElement) { //to do OR def insertBefore (head, elem, newElement): pass insertBefore (head, 3, 50) Sample Input Sample Output Ox21 2 223 240 O x21 2 22 50 ² 3 2 4 0
Complete the code for the removeFirst method, which should remove and return the first element in the linked list. Throw aNoSuchElementException if the method is invoked on an empty list. import java.util.NoSuchElementException; public class LinkedList { private Node first; public LinkedList() { first = null; } public Object getFirst() { if (first == null) { throw new NoSuchElementException(); } return first.data; } public Object removeFirst() { // put your code here } class Node { public Object data; public Node next; } }
Java Algorithm Programming Question Implement the ADT queue by using a circular linked list. Recall that this list has only an external reference to its last note. Example Output: Create a queue: isEmpty () returns true Add to queue to get Joe Jess Jim Jill Jane Jerry isEmpty () returns false Testing getFront and dequeue: Joe is at the front of the queue. Joe is removed from the front of the queue. Jess is at the front of the queue. Jess is removed from the front of the queue. Jim is at the front of the queue. Jim is removed from the front of the queue. Jill is at the front of the queue. Jill is removed from the front of the queue. Jane is at the front of the queue. Jane is removed from the front of the queue. Jerry is at the front of the queue. Jerry is removed from the front of the queue. The queue should be empty: isEmpty() returns true Add to queue to get Joe Jess Jim Testing clear: isEmpty() returns true Add to queue to get Joe Jess Jim Joe is at the front of the queue. Joe is…
Suppose the rule of the party is that the participants who arrive later will leave earlier. Which data structure is appropriate to store the participants? Stack Queue ArrayList Linked List
DONT use any of the list methods (append, pop etc.). class mycircularqueue(): def __init__(self, m = 10): self.maxsize = m self.array = [None]*m self.FRONT = self.REAR = -1 def enqueue(self, item): # Inserts item at the rear of a non full queue and returns True. If unable to insert the item returns false ####################################################################### # Remove the pass statement and write your code ####################################################################### pass def dequeue(self): # Removes the item from the front of the queue and returns it. For unsuccessful dequeue return False ####################################################################### # Remove the pass statement and write your code ####################################################################### pass def peek(self): # Returns the…
java Suppose queue is defined as LinkedQueue<Integer> queue = new LinkedQueue<>(); Show what is written by the following segment of code. SHOW YOUR WORK.