Hello doctor I don't understand how can I use a doubly linked list in java so, how can I do it with a head and tail. public void deleteEnd() {Node tmp=head;Node prev = null;while (tmp.next!=null) {prev=tmp;tmp=tmp.next;}prev.next=null;}public boolean contains(int d) {Node tmp=head;while(tmp!=null) {if (tmp.data==d) return true;tmp=tmp.next;return false;}public void remove(int d) {Node tmp=head;Node prev=null;while(tmp!=null && tmp.data! =d) {prev=tmp;tmp=tmp.next;}if(tmp!=null) prev.next=tmp.next;}public static void main(String[] args) {// TODO Auto-generated method stubList L=new List();L.addBegining(10);L.addBegining(20);L.addBegining(5);L.addEnd (50);L.addEnd(100);L.addBegining(1);System.out.println(L); class Node{int data;Node next;public Node(int d) {this (d, null);}public Node(int d,Node n) {data=d;next=n;}}public class List {private Node head;public List() {head=null;}public void addBegining(int d) {Node n=new Node(d);if(head==nul1) {head=n;}else {n.next=head;head=n;}}public void addEnd (int d) {if(head==nul1) {head=new Node (d);}else {Node tmp=head;while(tmp.next!=null)tmp=tmp.next;tmp.next=new Node (d);}

public class DoublyLinkList { class Node{ int data; Node previous;…

public void deleteEnd () { Node tmp=head; Node prev = null; while (tmp.next!=null) { prev=tmp; tmp=tmp.next; } prev.next=null; } public boolean contains(int d) { Node tmp=head; while(tmp!=null) { if (tmp.data==d) return true; tmp=tmp.next; } return false; } public void remove(int d) { Node tmp=head; Node prev=null; while (tmp!=null && tmp.data!=d) { prev=tmp; tmp=tmp.next; } if(tmp!=null) prev.next=tmp.next; } public static void main(String[] args) { // TODO Auto-generated method stub

public void deleteEnd () { Node tmp=head; Node prev = null; while (tmp.next!=null) { prev=tmp; tmp=tmp.next; } prev.next=null; } public boolean contains(int d) { Node tmp=head; while(tmp!=null) { if (tmp.data==d) return true; tmp=tmp.next; } return false; } public void remove(int d) { Node tmp=head; Node prev=null; while (tmp!=null && tmp.data!=d) { prev=tmp; tmp=tmp.next; } if(tmp!=null) prev.next=tmp.next; } public static void main(String[] args) { // TODO Auto-generated method stub

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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import java.util.*; public class Main{ public static void main(String[] args) { Main m = new Main(); m.go(); } private void go() { List<Stadium> parks = new ArrayList<Stadium>(); parks.add(new Stadium("PNC Park", "Pittsburgh", 38362, true)); parks.add(new Stadium("Dodgers Stadium", "Los Angeles", 56000, true)); parks.add(new Stadium("Citizens Bank Park", "Philadelphia", 43035, false)); parks.add(new Stadium("Coors Field", "Denver", 50398, true)); parks.add(new Stadium("Yankee Stadium", "New York", 54251, false)); parks.add(new Stadium("AT&T Park", "San Francisco", 41915, true)); parks.add(new Stadium("Citi Field", "New York", 41922, false)); parks.add(new Stadium("Angels Stadium", "Los Angeles", 45050, true)); Collections.sort(parks, Stadium.ByKidZoneCityName.getInstance()); for (Stadium s : parks) System.out.println(s); }}…
Need help with this Java problems. Java files are attached. Add your code to the file ArrayStack2Lab.java. Add your tests to the main() method. Submit ArrayStack2Lab.java. Problem 1 Implement the method public void display() which displays the entries in a stack starting from the top. If the stack is empty, print “The stack is empty”. Add the method to ArrrayStack2Lab.java. You do not need to modify StackInterface.java. Problem 2 Implement the method public int remove(int n) The method removes the n top most entries for a stack . If the stack contains less than n items, the stack becomes empty. The method returns the number of items removed. Add the method to ArrrayStack2Lab.java. You do not need to modify StackInterface.java.
For C++ in a doubly linked list, how would you print the list in reverse?? void double LL::printReverse()
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