Assume that the following method is within the KWLinkedList class, what does this method do?public boolean undefined(Node ptr){if(ptr == null) return false;Node p = ptr;while (p.next != null)p = p.next;Node newNode= new Node(ptr.data);newNode.next = p;newNode.prev = p.prev;p.prev.next = newNode;p.prev = newNode;size++;return true;}a. Inserts a new node with its data as the data of the node referenced by ptr, before the last node.O b. Inserts a new node with its data as the data of the node referenced by ptr, at the end of the list.Oc. Inserts a new node with its data as the data of the node referenced by ptr, after the first node of the list.O d. Deletes a node referenced by ptr, from the list.

Inserts a new node with its data as the data of the node referenced by ptr, before the last node.…

Assume that the following method is within the KWLinkedList class, what does this method do? public boolean undefined(Node ptr) { if(ptr == null) return false; Node p = ptr; while (p.next != null) p= p.next; Node newNode= new Node(ptr.data); newNode.next = p; newNode.prev = p.prev; p.prev.next = newNode; p.prev = newNode; size++; return true; }

Assume that the following method is within the KWLinkedList class, what does this method do? public boolean undefined(Node ptr) { if(ptr == null) return false; Node p = ptr; while (p.next != null) p= p.next; Node newNode= new Node(ptr.data); newNode.next = p; newNode.prev = p.prev; p.prev.next = newNode; p.prev = newNode; size++; return true; }

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

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