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 2 2 3 240 O x21 2 22 50 3 2 4 0

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 2 2 3 240 O x21 2 22 50 3 2 4 0

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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For a Doubly Linked List implement the following method: void deleteAfterHead() //Delete the second node from the list. If the list has only one element, delete the head. Assume you have deleteFromHead() and deleteFromTail() methods.
Given below is a function to delete the last element of a single linked list. Fill in the blanks. void removelast(){ if(head==null) return null; else if(head.nextNode==null){ } else{ Node temp=head; while(temp.nextNode.nextNode!=null){ temp=temp.nextNode; } } }
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, ObjectnewElement){//to do} insertBefore (head, 3, 50).
/ This method takes as parameters a reference to the head of a linked list, a // position specified by n, and a key. It returns the number of occurrences // of the key in the linked list beginning at the n-th node. If n = 0, it means // you should search in the entire linked list. If n = 1, then you should skip // the first node in the list. public int numOccurrencesRec(LNode node, int n, int key) { // TODO: implement this method return 0; // replace this statement with your own return } } LNode Below: public class LNode{ // instance variables private int m_info; private LNode m_link; // constructor public LNode(int info) { m_info = info; m_link = null; } // member methods public void setLink(LNode link) { m_link = link; } public LNode getLink() { return m_link; } public int getInfo() { return m_info; } }
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Assume you have a method (shown below) inside the single linked list class, what does this method do? private E remove () { Node temp = head; if (head != nulI) { head = head.next; size--; return temp.data } else return null; } (A Remove the first node in the list and return the data of the deleted node or null if the list is empty. Remove the node after the node referenced by temp and return the data of the deleted node or null if the list is (в empty. Remove all the nodes of the linked list and return the data of the last node deleted or null if the list is empty.
Add more methods to the doubly linked list class then test them• search(e) // Return one node with 3 values (stuID, stuName, stuScore) which matches agiven key e (studentID).• addAfter(e, stuID, stuName, stuScore) //Add a new node with 3 values (stuID,stuName, stuScore) after the node with the key e (studentID).• removeAt(e) //Remove a node which matches a given key e (studentID)• count() //Return a number of nodes of list.• update(stuID, stuName, stuScore) //Update the values of one node two codes below package DlinkedList; class Node<A,B,C> { private A stuID; private B stuName; private C stuScore; private Node<A,B,C> next; private Node <A,B,C> prev; public Node(A id, B name, C score) { stuID = id; stuName = name; stuScore = score; next = null; prev = null; } public A getStuID() { return stuID; } public B getStuName() { return stuName; } public C getStuScore() { return stuScore; } public Node<A,B,C> getNext(){ return next; } public Node<A,B,C>…
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Java - Mileage for a Runner
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3. void insert (Node newElement) or def insert(self, newElement) (4) Pre-condition: None. Post-condition: This method inserts newElement at the tail of the list. If an element with the same key as newElement already exists in the list, then it concludes the key already exists and does not insert the key.
Assuming the node class has already been created, start your code from the method: def swapReplaceMidOdd(head, element): #write your code here