Add these methods to the code - -Create at least three classes such.pdf
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Add these methods to the code : -Create at least three classes such as: 1. listnode- for data and link, constructors 2. Singlelinkedlist-for method definition 3. linkedlist-for objects -Insert a node at tail/end in a linked list. -Delete a node at a particular position in the list code: class listnodes{ int data; listnodes link; listnodes(){ data=0; link=null; } listnodes(int d,listnodes l){ data=d; link=l; } } class singlelinkedlist{ public listnodes insertnode(int data,listnodes head){ listnodes newnode=new listnodes(data,null); newnode.link=head; head=newnode; return head; } public listnodes insertAtPosition(listnodes head,int data,int position){ listnodes newnode=new listnodes(data,null);//create the newnode listnodes previous=head; int count=1; while(count<=position-1) { previous=previous.link; count++; } listnodes current=previous.link; newnode.link=current; previous.link=newnode; return head; } public listnodes deletefirst(listnodes head){ listnodes pre=head; head=head.link; pre.link=null; return pre; } public listnodes deletelast(listnodes head){ listnodes cur=head; listnodes previouscur=head; while(cur.link!=null){ previouscur=cur; cur=cur.link; } previouscur.link=null; return cur; } public int length(listnodes head) { listnodes current=head; int c=0; while(current!=null) { c++; current=current.link; } return c; } public boolean find(listnodes head,int searchdata){ listnodes cur=head; while(cur!=null) { if(cur.data==searchdata) { return true; } cur=cur.link; } return false; } void display(listnodes head){ listnodes current=head; while(current.link!=null){ System.out.print(current.data+"-->"); current=current.link; } System.out.print(current.data); } } public class LinkedList { public static void main(String[] args) { listnodes head=new listnodes(10,null); singlelinkedlist sl=new singlelinkedlist(); sl.display(head); System.out.println("\n*****Insert at front*****"); listnodes newhead=sl.insertnode(20, head); sl.display(newhead); System.out.println("\n*****Insert at a position*****"); sl.insertAtPosition(newhead, 40, 1); sl.display(newhead); } }.
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Add delete at a position to the code and display it to the code- class.pdf
Add delete at a position to the code and display it to the code:
class listnodes {
int data;
listnodes link;
listnodes() {
data = 0;
link = null;
}
listnodes(int d, listnodes l) {
data = d;
link = l;
}
}
class singlelinkedlist {
public listnodes insertnode(int data, listnodes head) {
listnodes newnode = new listnodes(data, null);
newnode.link = head;
head = newnode;
return head;
}
public listnodes insertAtPosition(listnodes head, int data, int position) {
listnodes newnode = new listnodes(data, null);
listnodes previous = head;
int count = 1;
while (count <= position - 1) {
previous = previous.link;
count++;
}
listnodes current = previous.link;
newnode.link = current;
previous.link = newnode;
return head;
}
public listnodes deletefirst(listnodes head) {
listnodes pre = head;
head = head.link;
pre.link = null;
return pre;
}
public void display(listnodes head) {
listnodes current = head;
while (current.link != null) {
System.out.print(current.data + "-->");
current = current.link;
}
System.out.print(current.data);
}
}
public class LinkedList {
public static void main(String[] args) {
listnodes head=new listnodes(10,null);
singlelinkedlist sl=new singlelinkedlist();
sl.display(head);
System.out.println("\nInsert at front");
listnodes newhead=sl.insertnode(20, head);
sl.display(newhead);
System.out.println("\nInsert at a position");
sl.insertAtPosition(newhead, 40, 1);
sl.display(newhead);
System.out.println("\nDelete first");
listnodes newhead2=sl.deletefirst(newhead);
sl.display(newhead2);
}
}
.
Draw memory map of this link list code and add insert at last ( java)-.pdf
Draw memory map of this link list code and add insert at last ( java):
class listnodes {
int data;
listnodes link;
listnodes() {
data = 0;
link = null;
}
listnodes(int d, listnodes l) {
data = d;
link = l;
}
}
class singlelinkedlist {
public listnodes insertnode(int data, listnodes head) {
listnodes newnode = new listnodes(data, null);
newnode.link = head;
head = newnode;
return head;
}
public listnodes insertAtPosition(listnodes head, int data, int position) {
listnodes newnode = new listnodes(data, null);
listnodes previous = head;
int count = 1;
while (count <= position - 1) {
previous = previous.link;
count++;
}
listnodes current = previous.link;
newnode.link = current;
previous.link = newnode;
return head;
}
public listnodes deletefirst(listnodes head) {
listnodes pre = head;
head = head.link;
pre.link = null;
return pre;
}
public listnodes deletelast(listnodes head) {
listnodes cur = head;
listnodes previouscur = head;
while (cur.link != null) {
previouscur = cur;
cur = cur.link;
}
previouscur.link = null;
return cur;
}
public int length(listnodes head) {
listnodes current = head;
int c = 0;
while (current != null) {
c++;
current = current.link;
}
return c;
}
public boolean find(listnodes head, int searchdata) {
listnodes cur = head;
while (cur != null) {
if (cur.data == searchdata) {
return true;
}
cur = cur.link;
}
return false;
}
public void display(listnodes head) {
listnodes current = head;
while (current.link != null) {
System.out.print(current.data + "-->");
current = current.link;
}
System.out.print(current.data);
}
public listnodes insertAtEnd(listnodes head, int data) {
listnodes newnode = new listnodes(data, null);
if (head == null) {
return newnode;
}
listnodes current = head;
while (current.link != null) {
current = current.link;
}
current.link = newnode;
return head;
}
}
public class LinkedList {
public static void main(String[] args) {
listnodes head=new listnodes(10,null);
singlelinkedlist sl=new singlelinkedlist();
sl.display(head);
System.out.println("\n*****Insert at front*****");
listnodes newhead=sl.insertnode(20, head);
sl.display(newhead);
System.out.println("\n*****Insert at a position*****");
sl.insertAtPosition(newhead, 40, 1);
sl.display(newhead);
System.out.println("\n*****Delete at front*****");
listnodes deletednode=sl.deletefirst(newhead);
System.out.println("Deleted node is: "+deletednode.data);
sl.display(newhead);
System.out.println("\n*****Delete at end*****");
listnodes deletedlast=sl.deletelast(newhead);
System.out.println("Deleted node is: "+deletedlast.data);
sl.display(newhead);
System.out.println("\n*****Length of Linked List*****");
int length=sl.length(newhead);
System.out.println("Length of Linked List is: "+length);
System.out.println("\n*****Search for an element*****");
boolean found=sl.find(newhead, 20);
if(found){
System.out.println("Element found");
}
else{
System.out.println("Element not found");
}
}
}.
Java AssignmentUsing the ListNode.java file below Write method.pdf
Java Assignment
Using the ListNode.java file below
Write methods called min and max that return the smallest and largest values in the linked list.
These methods will be added to your ListNode class. For example if a variable called list stores
{11, -7, 3, 42, 0, 14], the call of list.min() should return -7 and the call of list.max() should return
42. If the list is empty, return -1. Print the returned value.
Write a method called insertNode that inserts a new node anywhere in your linked list. Display
your linked list with new value.
Write a program to test these methods to ensure accuracy and successful implementation. Upload
your modified version of the ListNode java file only.
Note: Original code should still be included. You will make additions and slight modifications
where necessary. Throw exceptions where you think is necessary. // Listlode is a class for storing
a single node of a linked // list. This node class is for a list of integer values. public class Listlode
\{ public int data; //data stored in this node public Listliode front;//points to head node public
Listliode next; /f link to next node in the list // post: constructs a node with data and null link
public Listlode() \{ 3. // post: constructs a node with given data and null link: public Listlode(int
data) \{ this(data, null); 3 // post: constructs a node with given data and given link. public
Listlode(int data, Listliode next) \{ this.data = data; this. next = next; 3 public String toString() \{
if (front = null) : \} else \{ String result = " ["+ front data; Listliode current = front. next; while
(current != null) \{ result +=m,m+ current data, current = current. next; 3 result += " ]n - return
result; 3. }// post: appends the given value to the end of the list public void add(int value) \&
puolic void aod if (front = nult) \{. front = new Listlode (value); 3 else \{ Listlode current =
front; whistiode current = front; while (current next I= null) \{ current = current. next; 3 current.
next = new Listliode (value ); 3. 3 J// post : returns the position of the first occurrence of the
given /l value (-1 if not found ) public void remove (int index) \{ if ( index =){ \} else \{ Listiode
current = nodeAt ( index - 1); current. next = current. next. next, 3 3 3// pre : <=i< size() // post:
returns a reference to the node at the given index public Listlode nodeAt (int index) : List Node
current = front; for (int i=0;i< index; i++) \{ current = current. next. \}. return current; 3.
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Add delete at a position to the code and display it to the code- class.pdf
Add delete at a position to the code and display it to the code:
class listnodes {
int data;
listnodes link;
listnodes() {
data = 0;
link = null;
}
listnodes(int d, listnodes l) {
data = d;
link = l;
}
}
class singlelinkedlist {
public listnodes insertnode(int data, listnodes head) {
listnodes newnode = new listnodes(data, null);
newnode.link = head;
head = newnode;
return head;
}
public listnodes insertAtPosition(listnodes head, int data, int position) {
listnodes newnode = new listnodes(data, null);
listnodes previous = head;
int count = 1;
while (count <= position - 1) {
previous = previous.link;
count++;
}
listnodes current = previous.link;
newnode.link = current;
previous.link = newnode;
return head;
}
public listnodes deletefirst(listnodes head) {
listnodes pre = head;
head = head.link;
pre.link = null;
return pre;
}
public void display(listnodes head) {
listnodes current = head;
while (current.link != null) {
System.out.print(current.data + "-->");
current = current.link;
}
System.out.print(current.data);
}
}
public class LinkedList {
public static void main(String[] args) {
listnodes head=new listnodes(10,null);
singlelinkedlist sl=new singlelinkedlist();
sl.display(head);
System.out.println("\nInsert at front");
listnodes newhead=sl.insertnode(20, head);
sl.display(newhead);
System.out.println("\nInsert at a position");
sl.insertAtPosition(newhead, 40, 1);
sl.display(newhead);
System.out.println("\nDelete first");
listnodes newhead2=sl.deletefirst(newhead);
sl.display(newhead2);
}
}
.
Draw memory map of this link list code and add insert at last ( java)-.pdf
Draw memory map of this link list code and add insert at last ( java):
class listnodes {
int data;
listnodes link;
listnodes() {
data = 0;
link = null;
}
listnodes(int d, listnodes l) {
data = d;
link = l;
}
}
class singlelinkedlist {
public listnodes insertnode(int data, listnodes head) {
listnodes newnode = new listnodes(data, null);
newnode.link = head;
head = newnode;
return head;
}
public listnodes insertAtPosition(listnodes head, int data, int position) {
listnodes newnode = new listnodes(data, null);
listnodes previous = head;
int count = 1;
while (count <= position - 1) {
previous = previous.link;
count++;
}
listnodes current = previous.link;
newnode.link = current;
previous.link = newnode;
return head;
}
public listnodes deletefirst(listnodes head) {
listnodes pre = head;
head = head.link;
pre.link = null;
return pre;
}
public listnodes deletelast(listnodes head) {
listnodes cur = head;
listnodes previouscur = head;
while (cur.link != null) {
previouscur = cur;
cur = cur.link;
}
previouscur.link = null;
return cur;
}
public int length(listnodes head) {
listnodes current = head;
int c = 0;
while (current != null) {
c++;
current = current.link;
}
return c;
}
public boolean find(listnodes head, int searchdata) {
listnodes cur = head;
while (cur != null) {
if (cur.data == searchdata) {
return true;
}
cur = cur.link;
}
return false;
}
public void display(listnodes head) {
listnodes current = head;
while (current.link != null) {
System.out.print(current.data + "-->");
current = current.link;
}
System.out.print(current.data);
}
public listnodes insertAtEnd(listnodes head, int data) {
listnodes newnode = new listnodes(data, null);
if (head == null) {
return newnode;
}
listnodes current = head;
while (current.link != null) {
current = current.link;
}
current.link = newnode;
return head;
}
}
public class LinkedList {
public static void main(String[] args) {
listnodes head=new listnodes(10,null);
singlelinkedlist sl=new singlelinkedlist();
sl.display(head);
System.out.println("\n*****Insert at front*****");
listnodes newhead=sl.insertnode(20, head);
sl.display(newhead);
System.out.println("\n*****Insert at a position*****");
sl.insertAtPosition(newhead, 40, 1);
sl.display(newhead);
System.out.println("\n*****Delete at front*****");
listnodes deletednode=sl.deletefirst(newhead);
System.out.println("Deleted node is: "+deletednode.data);
sl.display(newhead);
System.out.println("\n*****Delete at end*****");
listnodes deletedlast=sl.deletelast(newhead);
System.out.println("Deleted node is: "+deletedlast.data);
sl.display(newhead);
System.out.println("\n*****Length of Linked List*****");
int length=sl.length(newhead);
System.out.println("Length of Linked List is: "+length);
System.out.println("\n*****Search for an element*****");
boolean found=sl.find(newhead, 20);
if(found){
System.out.println("Element found");
}
else{
System.out.println("Element not found");
}
}
}.
Java AssignmentUsing the ListNode.java file below Write method.pdf
Java Assignment
Using the ListNode.java file below
Write methods called min and max that return the smallest and largest values in the linked list.
These methods will be added to your ListNode class. For example if a variable called list stores
{11, -7, 3, 42, 0, 14], the call of list.min() should return -7 and the call of list.max() should return
42. If the list is empty, return -1. Print the returned value.
Write a method called insertNode that inserts a new node anywhere in your linked list. Display
your linked list with new value.
Write a program to test these methods to ensure accuracy and successful implementation. Upload
your modified version of the ListNode java file only.
Note: Original code should still be included. You will make additions and slight modifications
where necessary. Throw exceptions where you think is necessary. // Listlode is a class for storing
a single node of a linked // list. This node class is for a list of integer values. public class Listlode
\{ public int data; //data stored in this node public Listliode front;//points to head node public
Listliode next; /f link to next node in the list // post: constructs a node with data and null link
public Listlode() \{ 3. // post: constructs a node with given data and null link: public Listlode(int
data) \{ this(data, null); 3 // post: constructs a node with given data and given link. public
Listlode(int data, Listliode next) \{ this.data = data; this. next = next; 3 public String toString() \{
if (front = null) : \} else \{ String result = " ["+ front data; Listliode current = front. next; while
(current != null) \{ result +=m,m+ current data, current = current. next; 3 result += " ]n - return
result; 3. }// post: appends the given value to the end of the list public void add(int value) \&
puolic void aod if (front = nult) \{. front = new Listlode (value); 3 else \{ Listlode current =
front; whistiode current = front; while (current next I= null) \{ current = current. next; 3 current.
next = new Listliode (value ); 3. 3 J// post : returns the position of the first occurrence of the
given /l value (-1 if not found ) public void remove (int index) \{ if ( index =){ \} else \{ Listiode
current = nodeAt ( index - 1); current. next = current. next. next, 3 3 3// pre : <=i< size() // post:
returns a reference to the node at the given index public Listlode nodeAt (int index) : List Node
current = front; for (int i=0;i< index; i++) \{ current = current. next. \}. return current; 3.
Lec3-Linked list.pptx
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The MyLinkedList class used in Listing 24.6 is a one-way directional .docx
The MyLinkedList class used in Listing 24.6 is a one-way directional .docx
This assignment and the next (#5) involve design and development of a.pdf
This assignment and the next (#5) involve design and development of a sequential
non contiguous and dynamic datastructure called LinkedList. A linked list object is
a container consisting of connected ListNode objects. As before, we are not going
to use pre-fabricated classes from the c++ library, but construct the LinkedList
ADT from scratch.
The first step is construction and testing of the ListNode class. A ListNode object
contains a data field and a pointer to the next ListNode object (note the recursive
definition).
#This assignment requires you to
1. Read the Assignment 4 Notes
2. Watch the Assignment 4 Support video
3. Implement the following methods of the ListNode class
-custom constructor
-setters for next pointer and data
4. Implement the insert and remove method in the main program
5. Scan the given template to find the above //TODO and implement the code
needed
//TODO in ListNodecpp.h file
public: ListNode(T idata, ListNode<T> * newNext);
public: void setNext(ListNode<T> * newNext);
public: void setData(T newData);
// TODO in main program
void remove(ListNode<int> * &front,int value)
void insert(ListNode<int> * &front,int value)
# The driver is given ListNodeMain.cpp is given to you that does the following
tests
1. Declares a pointer called front to point to a ListNode of datatype integer
2. Constructs four ListNodes with data 1,2,4 and adds them to form a linked
list.
3. Inserts ListNode with data 3 to the list
4. Removes node 1 and adds it back to test removing and adding the first
element
5. Removes node 3 to test removing a middle node
6. Removes node 4 to test removing the last node
7. Attempt to remove a non existent node
8. Remove all existing nodes to empty the list
9. Insert node 4 and then node 1 to test if insertions preserve order
10.Print the list
Main.cpp
#include <iostream>
#include "ListNodecpp.h"
// REMEMBER each ListNode has two parts : a data field
// and an address field. The address is either null or points to the next node
//in the chain
//Requires: integer value for searching, address of front
//Effects: traverses the list node chain starting from front until the end comparing search value
with listnode getData. Returns the original search value if found, if not adds +1 to indicate not
found
//Modifies: Nothing
int search(ListNode<int> * front, int value);
//Requires: integer value for inserting, address of front
//Effects: creates a new ListNode with value and inserts in proper position (increasing order)in
the chain. If chain is empty, adds to the beginning
//Modifies: front, if node is added at the beginning.
//Also changes the next pointer of the previous node to point to the
//newly inserted list node. the next pointer of the newly inserted pointer
//points to what was the next of the previous node.
//This way both previous and current links are adjusted
//******** NOTE the use of & in passing pointer to front as parameter -
// Why do you think this is needed ?**********
void insert(ListNode<int> * &fr.
In this assignment you will implement insert() method for a singly l.pdf
In this assignment you will implement insert() method for a singly linked Link list. The code
MyLinkedlist.java is given , it uses generic type as the linked list can be created with any object
type. Some methods like add() and toString() are already implemented. The MyLinkedList class
has a private nested class called Node.
The objective of this assignment is to implement the insert() method that takes two inputs an
element of generic type to be inserted and an index (value of integer type) at which it should be
inserted. For this assignment we will assume the first element has the index 0. if the given index
is less than zero do nothing but if it is greater than the size of the list, insert the element at the
end of the list. if the index is between 0 and size , insert it in the appropriate location. You insert
code should correctly update the theSize data member of the linked list. Return type for insert()
method is boolean (true or false) depending on whether the insertion was successful or not. Use
the following method header.
}
Main.java
//add necessary libraries
public class Main
{
//add your function here
public static void main (String [] args)
{
}
}
MyLinkedList.java
public class MyLinkedList {
// A private nested Node class
private static class Node{
public AnyType data; // Data members are public, this is fine as the Node class itself is
private
public Node next;
public Node(AnyType d, Node n)
{
data = d;
next=n;
}
@Override
public String toString() {
return data.toString();
}
}
// Data Members
private Node head; // A node pointer to the first item in the List
private int theSize; // a integer variable to hold the size of the List
public MyLinkedList() {
doClear();
}
public void clear() {
doClear();
}
private void doClear() {
head = null;
theSize =0 ;
}
// An add method that will always add at the beginning of the List
public boolean add(AnyType x) {
if(head == null) // List is empty
{
head = new Node(x, null);
theSize++;
return true;
}
else // List has at least one item lets get to the end of it
{
Node newnode = new Node(x, head);
head = newnode;
theSize++;
return true;
}
}
@Override
public String toString() {
// This to String method will print the List from head to the end.
String theList = "";
if(head==null)
return theList;
Node cur = head;
while(cur.next!=null) {
theList = theList + cur.toString() + " ";
cur= cur.next;
}
return theList + cur.toString();
}
public int getTheSize() {
return theSize;
}
}
/*****************************************************************************
*
*
* SOLUTION CODE BELOW THIS HEADER
*
*****************************************************************************/
/*****************************************************************************
*
*
* SOLUTION CODE ABOVE THIS HEADER
*
*****************************************************************************/
}
Current file: Main.java Load default template... //add necessary Libraries public class Main \{
//add your function here public static vo.
Data Structures and Agorithm: DS 05 Doubly Linked List.pptx
Data Structures and Agorithm: DS 05 Doubly Linked List.pptx
Data Structures in C++I am really new to C++, so links are really .pdf
Data Structures in C++
I am really new to C++, so links are really hard topic for me. It would be nice if you can provide
explanations of what doubly linked lists are and of some of you steps... Thank you
In this assignment, you will implement a doubly-linked list class, together with some list
operations. To make things easier, you’ll implement a list of int, rather than a template class.
Solution
A variable helps us to identify the data. For ex: int a = 5; Here 5 is identified through variable a.
Now, if we have collection of integers, we need some representation to identify them. We call it
array. For ex: int arr[5]
This array is nothing but a Data Structure.
So, a Data Structure is a way to group the data.
There are many Data Structures available like Arrays, Linked List, Doubly-Linked list, Stack,
Queue, etc.
Doubly-Linked list are the ones where you can traverse from the current node both in left and
right directions.
Why so many different types of Data Structures are required ?
Answer is very simple, grouping of data, storage of data and accessing the data is different.
For example, in case of Arrays we store all the data in contiguous locations.
What if we are not able to store the data in contiguous locations because we have huge data.
Answer is go for Linked List/Doubly-Linked list.
Here we can store the data anywhere and link the data through pointers.
I will try to provide comments for the code you have given. May be this can help you.
#pragma once
/*
dlist.h
Doubly-linked lists of ints
*/
#include
class dlist {
public:
dlist() { }
// Here we are creating a NODE, it has a integer value and two pointers.
// One pointer is to move to next node and other to go back to previous node.
struct node {
int value;
node* next;
node* prev;
};
// To return head pointer, i.e. start of the Doubly-Linked list.
node* head() const { return _head; }
// To return Tail pointer, i.e. end of the Doubly-Linked list.
node* tail() const { return _tail; }
// **** Implement ALL the following methods ****
// Returns the node at a particular index (0 is the head).
node* at(int index){
int cnt = 0;
struct node* tmp = head();
while(tmp!=NULL)
{
if (cnt+1 == index)
return tmp;
tmp = tmp->next;
}
}
// Insert a new value, after an existing one
void insert(node *previous, int value){
// check if the given previous is NULL
if (previous == NULL)
{
printf(\"the given previous node cannot be NULL\");
return;
}
// allocate new node
struct node* new_node =(struct node*) malloc(sizeof(struct node));
// put in the data
new_node->data = new_data;
// Make next of new node as next of previous
new_node->next = previous->next;
// Make the next of previous as new_node
previous->next = new_node;
// Make previous as previous of new_node
new_node->prev = previous;
// Change previous of new_node\'s next node
if (new_node->next != NULL)
new_node->next->prev = new_node;
}
// Delete the given node
void del(node* which){
struct node* head_ref = head();
/* base case */
if(*head_ref == NUL.
Using C++ use a linked list to create an alphabetical Conta.pdf
Using C++, use a linked list to create an alphabetical Contact Book to store the names, addresses,
and phone numbers of our contacts. The data structure used contain contacts should be a linked
list and each time a new contact is added the contact will be inserted into the correct alphabetical
location by last name. Assume there are no contacts that have the same last name. There will be
two classes. One named LinkedList and the other named PersonNode. Below are the LinkedList
and PersonNode classes. I have 2 errors in my Person Node class and have bolded them below
with the error code. I am looking for some help fixing them.
LinkedList.h
#ifndef LINKEDLIST_H
#define LINKEDLIST_H
#include "PersonNode.h"
class LinkedList {
private:
PersonNode* headPtr;
PersonNode* tailPtr;
public:
LinkedList();
void addLink(PersonNode* newNode);
PersonNode* findInsertSpot(PersonNode* newNode);
PersonNode* getHeadPtr();
};
#endif /* LINKEDLIST_H */
LinkedList.cpp
#include "LinkedList.h"
LinkedList::LinkedList() {
headPtr = NULL;
tailPtr = NULL;
}
void LinkedList::addLink(PersonNode* newNode) {
if (headPtr == NULL) {
headPtr = newNode;
tailPtr = newNode;
}
else {
PersonNode* insertionPoint = findInsertSpot(newNode);
if (insertionPoint == NULL) {
// new node should be the new head
newNode->setNext(headPtr);
headPtr = newNode;
}
else {
newNode->setNext(insertionPoint->getNext());
insertionPoint->setNext(newNode);
if (tailPtr == insertionPoint) {
tailPtr = newNode;
}
}
}
}
PersonNode* LinkedList::findInsertSpot(PersonNode* newNode) {
if (headPtr == NULL) {
return NULL;
}
else {
PersonNode* current = headPtr;
while (current->getNext() != NULL && current->getNext()->getLName() < newNode->getLName())
{
current = current->getNext();
}
return current;
}
}
PersonNode* LinkedList::getHeadPtr() {
return headPtr;
}
PersonNode.h
#include <string>
class PersonNode {
private:
std::string fName;
std::string lName;
std::string address;
std::string phone;
PersonNode* next;
public:
PersonNode();
PersonNode(std::string fName, std::string lName, std::string address, std::string phone);
std::string getFName();
void setFName(std::string fName);
std::string getLName();
void setLName(std::string lName);
std::string getAddress();
void setAddress(std::string address);
std::string getPhone();
void setPhone(std::string phone);
std::string getFullName();
PersonNode* getNext();
void setNext(PersonNode* next);
};
#endif /* PERSONNODE_H */
PersonNode.cpp
#include "PersonNode.h"
PersonNode::PersonNode() {
next = NULL;
}
PersonNode::PersonNode(std::string fName, std::string lName, std::string address, std::string
phone) {
this->fName = fName;
this->lName = lName;
this->address = address;
this->phone = phone;
next = NULL;
}
std::string PersonNode::getFName() {
return fName;
}
void PersonNode::setFName(std::string fName) {
this->fName = fName;
}
std::string PersonNode::getLName() {
return lName;
}
void PersonNode::setLName(std::string lName) {
this->lName = lName;
}
std::string PersonNode::getAddre.
Linked lists a
In computer science, a linked list is a linear collection of data elements, in which linear order is not given by their physical placement in memory. Instead, each element points to the next
Can somebody solve the TODO parts of the following problem- Thanks D.pdf
Can somebody solve the TODO parts of the following problem.
Thanks
Description
This assignment builds on top of the ListNode class designed and tested in Assignment 4 where
constructionand testing of the ListNode class has already been done. Recall that a ListNode
object contains a data field and a pointer to the next ListNode object.
We now encapsulate the functions to create, search and update the database into a LinkedList
class. There are two members in this class. A pointer called front that points to a ListNode object
and an integer count of the total number of objects currently in the list.
As before, we are not going to use pre-fabricated classes from the c++ library, but construct the
LinkedList ADT from scratch.
We can now use this class to create a LinkedList object which contains a collection of ListNodes
each having a Song object in the data field. The api is put through its paces by initially testing it
on a dummy database containing four songs. The main program then repeats the testing process
with the song list in the file SongData.txt and then again with the song list in the file
SongDataDouble.txt.
The number of steps taken to populate the database for both files is recorded.
Instruction
#This assignment requires you to
Read the Assignment 5 Notes
Watch the Assignment 5 Support video
Implement the following methods of the LinkedList class
-custom constructor
-setters for next pointer and data
Implement the insert, remove and get method in the LinkedListcpp.h file
Scan the given template to find the above //TODO and implement the code needed
//Requires: Song for inserting
//Effects: creates a new ListNode with input value and inserts in proper position (increasing order
of chart position)in the chain. If LinkedList, adds to the beginning
//Modifies: front, if node is added at the beginning.
//Also changes the next pointer of the previous node to point to the newly inserted list node. the
next pointer of the newly inserted pointer points to what was the next of the previous node. This
way both previous and current links are adjusted
//TODO
template <class T>
int LinkedList<T>::insert( T value, SortBy<T> f){
int steps=0;
//TODO
return steps;
}
//Requires: Song title for searching
//Effects: traverses the LinkedList (database) starting from front until the end comparing titles
Returns the original search value if found otherwise returns an empty song with blank title
//Modifies: Nothing
//TODO
template <class T>
T LinkedList<T>::get(T value){
ListNode<T> * current = front;//this may need to change
//TODO
return current->getData();
}
//TODO
template <class T>
int LinkedList<T>::remove(T value){
//TODO
int steps=0;
return steps;
}
/ /Requires: index position of Song to be found
//Effects: traverses the LinkedList starting from front and travels to the index position (if valid)
and returns the song at that index position. Note index position may NOT be the same as chart
position
//Modifies: Nothing
//TODO
template <class T>
T Linke.
Write a Java Class to Implement a Generic Linked ListYour list mus.pdf
Write a Java Class to Implement a Generic Linked List
Your list must be implemented as a singly-linked list of generic nodes, where each Node object
has two instance variables: an object of the “type variable” class, and a pointer to the next node
on the list.
Your class will contain separate methods to handle each of the operations read from a data file
(see II., below)
Your class will also override toString() to return the objects on the list in the order in which they
occur.
Write a Test Class for Your LinkedList Class
Your main method will read list operation instructions from a data file, until end-of-file and call
the appropriate LinkedList method to execute each one.
After each operation is executed, print out the operation and the updated list.
The data file to be used is on the class web site and the operations are:
APPEND X - Append object X to the end of the list
ADD N X - Insert object X as the new Nth element in the list, increasing the size of the list by 1
E.g. Suppose the list is:
head -> 1 -> 2 -> 3 -> 4->null
After ADD 3 7 it would be:
head -> 1 -> 2 -> 7 -> 3 -> 4->null
DELETE N – Remove the Nth object from the list
SWAP M N - Interchange the positions of the Mth and Nth
objects on the list
For credit, the two nodes must actually \"trade places\" in the list, and not merely swap their data
values
REVERSE - Reverse the order of the objects on the list
This must be done by reversing the order of the nodes themselves, rather than by swapping the
data stored
To get credit for your reverse() method, it must use either one of these 2 algorithms:
For each node on the list except the current “head”
node, delete the node and insert it as the new head
Use your swap() method
6. CLEAR – Clear the list (make it empty)
No credit will be given for programs that use any additional data structures – either from the Java
API or programmer defined -, other than your own LinkedList class
txt file:
Solution
//Java Program to Implement Singly Linked List
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
/* Class Node */
class Nodes
{
protected Object data;
protected Nodes next;
/* Constructor */
public Nodes()
{
next = null;
data = null;
}
/* Constructor */
public Nodes(Object d,Nodes n)
{
data = d;
next = n;
}
/* Function to set link to next Node */
public void setLink(Nodes n)
{
next = n;
}
/* Function to set data to current Node */
public void setData(Object d)
{
data = d;
}
/* Function to get link to next node */
public Nodes getLink()
{
return next;
}
/* Function to get data from current Node */
public Object getData()
{
return data;
}
}
/* Class linkedList */
class linkList
{
protected Nodes start;
protected Nodes end ;
public int size ;
/* Constructor */
public linkList()
{
start = null;
end = null;
size = 0;
}
/* Function to check if list is empty */
public boolean isEmpty()
{
return start == null;
}
/* Function to get size of list */
public int getSize()
{
return .
in C++ , Design a linked list class named IntegerList to hold a seri.pdf
in C++ , Design a linked list class named IntegerList to hold a series of integers. The class must
have public member functions for appending , inserting, deleting and displaying nodes. The
append function must append a node to the end of the list. The insert function must insert node in
ascending order. The delete function must delete the node with the given value. The display
function should display the list from head to tail. The IntegerList class should also have a
destructor that destroys the list and release memory. The list node must be declared as a structure
using keyword struct. This structure is a private member of IntegerList. You should also store the
head of the list as a private member.
Write a test program to test the implementation your IntegerList class works properly.
Solution
Here is the code for the above scenario:
#include
using namespace std;
struct ListNode
{
float value;
ListNode *next;
};
ListNode *head;
class LinkedList
{
public:
int insertNode(float num);
int appendNode(float num);
void deleteNode(float num);
void destroyList();
void displayList();
LinkedList(void) {head = NULL;}
~LinkedList(void) {destroyList();}
};
int LinkedList::appendNode(float num)
{
ListNode *newNode, *nodePtr = head;
newNode = new ListNode;
if(newNode == NULL)
{
cout << \"Error allocating memory for new list member!\ \";
return 1;
}
newNode->value = num;
newNode->next = NULL;
if(head == NULL)
{
cout << \"List was empty - \" << newNode->value;
cout << \" is part of list\'s first node.\ \";
head = newNode;
}
else
{
while(nodePtr->next != NULL)
nodePtr = nodePtr->next;
nodePtr->next = newNode;
}
return 0;
}
int LinkedList::insertNode(float num)
{
struct ListNode *newNode, *nodePtr = head, *prevNodePtr = NULL;
newNode = new ListNode;
if(newNode == NULL)
{
cout << \"Error allocating memory for new list member!\ \";
return 1;
}
newNode->value = num;
newNode->next = NULL;
if(head==NULL) {
cout << \"List was empty - \" << newNode->value;
cout << \" is part of list\'s first node.\ \";
head = newNode;
}
else
{
while((nodePtr != NULL) && (nodePtr->value < num)) {
prevNodePtr = nodePtr;
nodePtr = nodePtr->next;
}
if(prevNodePtr==NULL)
newNode->next = head;
else
newNode->next = nodePtr; prevNodePtr->next = newNode;
}
return 0;
}
void LinkedList::deleteNode(float num)
{
struct ListNode *nodePtr = head, *prevNodePtr = NULL;
if(head==NULL) {
cout << \"The list was empty!\ \";
return;
}
if(head->value == num) {
head = nodePtr->next;
delete [] nodePtr;
}
else
{
while((nodePtr!= NULL)&&(nodePtr->value != num)) {
prevNodePtr = nodePtr;
nodePtr = nodePtr->next;
}
if(nodePtr==NULL)
cout << \"The value \" << num << \" is not in this list!\ \";
else {
prevNodePtr->next = nodePtr->next;
delete [] nodePtr;
}
}
}
void LinkedList::destroyList()
{
struct ListNode *nodePtr = head, *nextNode = nodePtr;
if(head==NULL) {
cout << \"The list is empty!\ \";
return;
}
while (nodePtr != NULL) {
nextNode = nodePtr->next;
delete [] nodePtr;
nodePtr = nextNode;
}
}
void LinkedList.
Age- 71 Gender- F History- Mrs S was referred by her internist for eva.pdf
Age: 71 Gender: F History: Mrs S was referred by her internist for evaluation of hearing. She
complained that her right ear has greater impairment than the left, and that the tinnitus in this ear
is growing louder and increasingly annoying. She reported some aural fullness in the right ear,
no pain, and no dizziness. She does not feel the left ear is impaired. She stated that the onset of
the loss is gradual. Otoscopy: within normal limits..
After the Sponsor submits the New Drug Application- the FDA may reques.pdf
After the Sponsor submits the New Drug Application, the FDA may request that additional data
be collected. The Sponsor may receive conditional approval with the requirement to conduct a
Phase 4 trial to collect additional information. IV II III Question 10 ( 2 points) Identify the drug
study phase: Safety and side effect data is not collected. III II IV None of the above. This data is
collected in all clinical trials..
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ccvcvbcbvcbvcbvcbvcb vngfg hgjhg gj jgjhgjhgjhg jhgh jhgjhgj gjhgjhgjhgjhgjhgjhgjhg jghgjhgjhgjhgjhg jjghjhgjhgjhgjhgjh hgjhgjhgjhgjhgjhgjhgjgjhgjhgjhg hgfgfhdfhtftfj jgyjyyyugyugyug yjgghgjhgjhf drdfhgfgfgfgj jgjhgjhgjhgjhgjhg jhgghjfgf fxdx gfd hdhfd tftyf yytfy ytftyf ytf ytfty fytftykgh kghjg jhghgh fgfghfgh fgfghfgf gfgfgfgfytf hgfggf ghfgfg gjhghjg cfffgh jgfgfhgffhg hghh yuy ygyyuyutyutyu jgfghfhgfghfh fghfhgfhgf fthfhfhf hfhfhgf hfhgfghf fghfghfghfhhgfghf jgjhgjhgjhgjhgjhgj jgjhgjh jgjhg jgjhgjhgjhg jhgjhgjhg jhgjhg jhgjhgollowing the announcement of Google+ API deprecation scheduled for March 2019, a number of changes will be made to Blogger’s Google+ integration on 4 February 2019. *Google+ widgets:* Support for the “+1 Button”, “Google+ Followers” and “Google+ Badge” widgets in Layout will no longer be available. All instances of these widgets will be removed from all blogs. *+1 buttons:* The +1/G+ buttons and Google+ share links below blog posts and in the navigation bar will be removed. Please note that if you have a custom template that includes Google+ features, you may need to update ... read more ollowing the announcement of Google+ API deprecation scheduled for March 2019, a number of changes will be made to Blogger’s Google+ integration on 4 February 2019. *Google+ widgets:* Support for the “+1 Button”, “Google+ Followers” and “Google+ Badge” widgets in Layout will no longer be available. All instances of these widgets will be removed from all blogs. *+1 buttons:* The +1/G+ buttons and Google+ share links below blog posts and in the navigation bar will be removed. Please note that if you have a custom template that includes Google+ features, you may need to update ... read moreollowing the announcement of Google+ API deprecation scheduled for March 2019, a number of changes will be made to Blogger’s Google+ integration on 4 February 2019. *Google+ widgets:* Support for the “+1 Button”, “Google+ Followers” and “Google+ Badge” widgets in Layout will no longer be available. All instances of these widgets will be removed from all blogs. *+1 buttons:* The +1/G+ buttons and Google+ share links below blog posts and in the navigation bar will be removed. Please note that if you have a custom template that includes Google+ features, you may need to update ... read moreollowing the announcement of Google+ API deprecation scheduled for March 2019, a number of changes will be made to Blogger’s Google+ integration on 4 February 2019. *Google+ widgets:* Support for the “+1 Button”, “Google+ Followers” and “Google+ Badge” widgets in Layout will no longer be available. All instances of these widgets will be removed from all blogs. *+1 buttons:* The +1/G+ buttons and Google+ share links below blog posts and in the navigation bar will be removed. Please note that if you have a custom template that includes Google+ features, you may need to update ... read moreollowing the announcement of Google+ API deprecation scheduled for March 2019, a nu
The MyLinkedList class used in Listing 24.6 is a one-way directional .docx
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This assignment and the next (#5) involve design and development of a.pdf
This assignment and the next (#5) involve design and development of a sequential
non contiguous and dynamic datastructure called LinkedList. A linked list object is
a container consisting of connected ListNode objects. As before, we are not going
to use pre-fabricated classes from the c++ library, but construct the LinkedList
ADT from scratch.
The first step is construction and testing of the ListNode class. A ListNode object
contains a data field and a pointer to the next ListNode object (note the recursive
definition).
#This assignment requires you to
1. Read the Assignment 4 Notes
2. Watch the Assignment 4 Support video
3. Implement the following methods of the ListNode class
-custom constructor
-setters for next pointer and data
4. Implement the insert and remove method in the main program
5. Scan the given template to find the above //TODO and implement the code
needed
//TODO in ListNodecpp.h file
public: ListNode(T idata, ListNode<T> * newNext);
public: void setNext(ListNode<T> * newNext);
public: void setData(T newData);
// TODO in main program
void remove(ListNode<int> * &front,int value)
void insert(ListNode<int> * &front,int value)
# The driver is given ListNodeMain.cpp is given to you that does the following
tests
1. Declares a pointer called front to point to a ListNode of datatype integer
2. Constructs four ListNodes with data 1,2,4 and adds them to form a linked
list.
3. Inserts ListNode with data 3 to the list
4. Removes node 1 and adds it back to test removing and adding the first
element
5. Removes node 3 to test removing a middle node
6. Removes node 4 to test removing the last node
7. Attempt to remove a non existent node
8. Remove all existing nodes to empty the list
9. Insert node 4 and then node 1 to test if insertions preserve order
10.Print the list
Main.cpp
#include <iostream>
#include "ListNodecpp.h"
// REMEMBER each ListNode has two parts : a data field
// and an address field. The address is either null or points to the next node
//in the chain
//Requires: integer value for searching, address of front
//Effects: traverses the list node chain starting from front until the end comparing search value
with listnode getData. Returns the original search value if found, if not adds +1 to indicate not
found
//Modifies: Nothing
int search(ListNode<int> * front, int value);
//Requires: integer value for inserting, address of front
//Effects: creates a new ListNode with value and inserts in proper position (increasing order)in
the chain. If chain is empty, adds to the beginning
//Modifies: front, if node is added at the beginning.
//Also changes the next pointer of the previous node to point to the
//newly inserted list node. the next pointer of the newly inserted pointer
//points to what was the next of the previous node.
//This way both previous and current links are adjusted
//******** NOTE the use of & in passing pointer to front as parameter -
// Why do you think this is needed ?**********
void insert(ListNode<int> * &fr.
In this assignment you will implement insert() method for a singly l.pdf
In this assignment you will implement insert() method for a singly linked Link list. The code
MyLinkedlist.java is given , it uses generic type as the linked list can be created with any object
type. Some methods like add() and toString() are already implemented. The MyLinkedList class
has a private nested class called Node.
The objective of this assignment is to implement the insert() method that takes two inputs an
element of generic type to be inserted and an index (value of integer type) at which it should be
inserted. For this assignment we will assume the first element has the index 0. if the given index
is less than zero do nothing but if it is greater than the size of the list, insert the element at the
end of the list. if the index is between 0 and size , insert it in the appropriate location. You insert
code should correctly update the theSize data member of the linked list. Return type for insert()
method is boolean (true or false) depending on whether the insertion was successful or not. Use
the following method header.
}
Main.java
//add necessary libraries
public class Main
{
//add your function here
public static void main (String [] args)
{
}
}
MyLinkedList.java
public class MyLinkedList {
// A private nested Node class
private static class Node{
public AnyType data; // Data members are public, this is fine as the Node class itself is
private
public Node next;
public Node(AnyType d, Node n)
{
data = d;
next=n;
}
@Override
public String toString() {
return data.toString();
}
}
// Data Members
private Node head; // A node pointer to the first item in the List
private int theSize; // a integer variable to hold the size of the List
public MyLinkedList() {
doClear();
}
public void clear() {
doClear();
}
private void doClear() {
head = null;
theSize =0 ;
}
// An add method that will always add at the beginning of the List
public boolean add(AnyType x) {
if(head == null) // List is empty
{
head = new Node(x, null);
theSize++;
return true;
}
else // List has at least one item lets get to the end of it
{
Node newnode = new Node(x, head);
head = newnode;
theSize++;
return true;
}
}
@Override
public String toString() {
// This to String method will print the List from head to the end.
String theList = "";
if(head==null)
return theList;
Node cur = head;
while(cur.next!=null) {
theList = theList + cur.toString() + " ";
cur= cur.next;
}
return theList + cur.toString();
}
public int getTheSize() {
return theSize;
}
}
/*****************************************************************************
*
*
* SOLUTION CODE BELOW THIS HEADER
*
*****************************************************************************/
/*****************************************************************************
*
*
* SOLUTION CODE ABOVE THIS HEADER
*
*****************************************************************************/
}
Current file: Main.java Load default template... //add necessary Libraries public class Main \{
//add your function here public static vo.
Data Structures and Agorithm: DS 05 Doubly Linked List.pptx
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Data Structures in C++I am really new to C++, so links are really .pdf
Data Structures in C++
I am really new to C++, so links are really hard topic for me. It would be nice if you can provide
explanations of what doubly linked lists are and of some of you steps... Thank you
In this assignment, you will implement a doubly-linked list class, together with some list
operations. To make things easier, you’ll implement a list of int, rather than a template class.
Solution
A variable helps us to identify the data. For ex: int a = 5; Here 5 is identified through variable a.
Now, if we have collection of integers, we need some representation to identify them. We call it
array. For ex: int arr[5]
This array is nothing but a Data Structure.
So, a Data Structure is a way to group the data.
There are many Data Structures available like Arrays, Linked List, Doubly-Linked list, Stack,
Queue, etc.
Doubly-Linked list are the ones where you can traverse from the current node both in left and
right directions.
Why so many different types of Data Structures are required ?
Answer is very simple, grouping of data, storage of data and accessing the data is different.
For example, in case of Arrays we store all the data in contiguous locations.
What if we are not able to store the data in contiguous locations because we have huge data.
Answer is go for Linked List/Doubly-Linked list.
Here we can store the data anywhere and link the data through pointers.
I will try to provide comments for the code you have given. May be this can help you.
#pragma once
/*
dlist.h
Doubly-linked lists of ints
*/
#include
class dlist {
public:
dlist() { }
// Here we are creating a NODE, it has a integer value and two pointers.
// One pointer is to move to next node and other to go back to previous node.
struct node {
int value;
node* next;
node* prev;
};
// To return head pointer, i.e. start of the Doubly-Linked list.
node* head() const { return _head; }
// To return Tail pointer, i.e. end of the Doubly-Linked list.
node* tail() const { return _tail; }
// **** Implement ALL the following methods ****
// Returns the node at a particular index (0 is the head).
node* at(int index){
int cnt = 0;
struct node* tmp = head();
while(tmp!=NULL)
{
if (cnt+1 == index)
return tmp;
tmp = tmp->next;
}
}
// Insert a new value, after an existing one
void insert(node *previous, int value){
// check if the given previous is NULL
if (previous == NULL)
{
printf(\"the given previous node cannot be NULL\");
return;
}
// allocate new node
struct node* new_node =(struct node*) malloc(sizeof(struct node));
// put in the data
new_node->data = new_data;
// Make next of new node as next of previous
new_node->next = previous->next;
// Make the next of previous as new_node
previous->next = new_node;
// Make previous as previous of new_node
new_node->prev = previous;
// Change previous of new_node\'s next node
if (new_node->next != NULL)
new_node->next->prev = new_node;
}
// Delete the given node
void del(node* which){
struct node* head_ref = head();
/* base case */
if(*head_ref == NUL.
Using C++ use a linked list to create an alphabetical Conta.pdf
Using C++, use a linked list to create an alphabetical Contact Book to store the names, addresses,
and phone numbers of our contacts. The data structure used contain contacts should be a linked
list and each time a new contact is added the contact will be inserted into the correct alphabetical
location by last name. Assume there are no contacts that have the same last name. There will be
two classes. One named LinkedList and the other named PersonNode. Below are the LinkedList
and PersonNode classes. I have 2 errors in my Person Node class and have bolded them below
with the error code. I am looking for some help fixing them.
LinkedList.h
#ifndef LINKEDLIST_H
#define LINKEDLIST_H
#include "PersonNode.h"
class LinkedList {
private:
PersonNode* headPtr;
PersonNode* tailPtr;
public:
LinkedList();
void addLink(PersonNode* newNode);
PersonNode* findInsertSpot(PersonNode* newNode);
PersonNode* getHeadPtr();
};
#endif /* LINKEDLIST_H */
LinkedList.cpp
#include "LinkedList.h"
LinkedList::LinkedList() {
headPtr = NULL;
tailPtr = NULL;
}
void LinkedList::addLink(PersonNode* newNode) {
if (headPtr == NULL) {
headPtr = newNode;
tailPtr = newNode;
}
else {
PersonNode* insertionPoint = findInsertSpot(newNode);
if (insertionPoint == NULL) {
// new node should be the new head
newNode->setNext(headPtr);
headPtr = newNode;
}
else {
newNode->setNext(insertionPoint->getNext());
insertionPoint->setNext(newNode);
if (tailPtr == insertionPoint) {
tailPtr = newNode;
}
}
}
}
PersonNode* LinkedList::findInsertSpot(PersonNode* newNode) {
if (headPtr == NULL) {
return NULL;
}
else {
PersonNode* current = headPtr;
while (current->getNext() != NULL && current->getNext()->getLName() < newNode->getLName())
{
current = current->getNext();
}
return current;
}
}
PersonNode* LinkedList::getHeadPtr() {
return headPtr;
}
PersonNode.h
#include <string>
class PersonNode {
private:
std::string fName;
std::string lName;
std::string address;
std::string phone;
PersonNode* next;
public:
PersonNode();
PersonNode(std::string fName, std::string lName, std::string address, std::string phone);
std::string getFName();
void setFName(std::string fName);
std::string getLName();
void setLName(std::string lName);
std::string getAddress();
void setAddress(std::string address);
std::string getPhone();
void setPhone(std::string phone);
std::string getFullName();
PersonNode* getNext();
void setNext(PersonNode* next);
};
#endif /* PERSONNODE_H */
PersonNode.cpp
#include "PersonNode.h"
PersonNode::PersonNode() {
next = NULL;
}
PersonNode::PersonNode(std::string fName, std::string lName, std::string address, std::string
phone) {
this->fName = fName;
this->lName = lName;
this->address = address;
this->phone = phone;
next = NULL;
}
std::string PersonNode::getFName() {
return fName;
}
void PersonNode::setFName(std::string fName) {
this->fName = fName;
}
std::string PersonNode::getLName() {
return lName;
}
void PersonNode::setLName(std::string lName) {
this->lName = lName;
}
std::string PersonNode::getAddre.
Linked lists a
In computer science, a linked list is a linear collection of data elements, in which linear order is not given by their physical placement in memory. Instead, each element points to the next
Can somebody solve the TODO parts of the following problem- Thanks D.pdf
Can somebody solve the TODO parts of the following problem.
Thanks
Description
This assignment builds on top of the ListNode class designed and tested in Assignment 4 where
constructionand testing of the ListNode class has already been done. Recall that a ListNode
object contains a data field and a pointer to the next ListNode object.
We now encapsulate the functions to create, search and update the database into a LinkedList
class. There are two members in this class. A pointer called front that points to a ListNode object
and an integer count of the total number of objects currently in the list.
As before, we are not going to use pre-fabricated classes from the c++ library, but construct the
LinkedList ADT from scratch.
We can now use this class to create a LinkedList object which contains a collection of ListNodes
each having a Song object in the data field. The api is put through its paces by initially testing it
on a dummy database containing four songs. The main program then repeats the testing process
with the song list in the file SongData.txt and then again with the song list in the file
SongDataDouble.txt.
The number of steps taken to populate the database for both files is recorded.
Instruction
#This assignment requires you to
Read the Assignment 5 Notes
Watch the Assignment 5 Support video
Implement the following methods of the LinkedList class
-custom constructor
-setters for next pointer and data
Implement the insert, remove and get method in the LinkedListcpp.h file
Scan the given template to find the above //TODO and implement the code needed
//Requires: Song for inserting
//Effects: creates a new ListNode with input value and inserts in proper position (increasing order
of chart position)in the chain. If LinkedList, adds to the beginning
//Modifies: front, if node is added at the beginning.
//Also changes the next pointer of the previous node to point to the newly inserted list node. the
next pointer of the newly inserted pointer points to what was the next of the previous node. This
way both previous and current links are adjusted
//TODO
template <class T>
int LinkedList<T>::insert( T value, SortBy<T> f){
int steps=0;
//TODO
return steps;
}
//Requires: Song title for searching
//Effects: traverses the LinkedList (database) starting from front until the end comparing titles
Returns the original search value if found otherwise returns an empty song with blank title
//Modifies: Nothing
//TODO
template <class T>
T LinkedList<T>::get(T value){
ListNode<T> * current = front;//this may need to change
//TODO
return current->getData();
}
//TODO
template <class T>
int LinkedList<T>::remove(T value){
//TODO
int steps=0;
return steps;
}
/ /Requires: index position of Song to be found
//Effects: traverses the LinkedList starting from front and travels to the index position (if valid)
and returns the song at that index position. Note index position may NOT be the same as chart
position
//Modifies: Nothing
//TODO
template <class T>
T Linke.
Write a Java Class to Implement a Generic Linked ListYour list mus.pdf
Write a Java Class to Implement a Generic Linked List
Your list must be implemented as a singly-linked list of generic nodes, where each Node object
has two instance variables: an object of the “type variable” class, and a pointer to the next node
on the list.
Your class will contain separate methods to handle each of the operations read from a data file
(see II., below)
Your class will also override toString() to return the objects on the list in the order in which they
occur.
Write a Test Class for Your LinkedList Class
Your main method will read list operation instructions from a data file, until end-of-file and call
the appropriate LinkedList method to execute each one.
After each operation is executed, print out the operation and the updated list.
The data file to be used is on the class web site and the operations are:
APPEND X - Append object X to the end of the list
ADD N X - Insert object X as the new Nth element in the list, increasing the size of the list by 1
E.g. Suppose the list is:
head -> 1 -> 2 -> 3 -> 4->null
After ADD 3 7 it would be:
head -> 1 -> 2 -> 7 -> 3 -> 4->null
DELETE N – Remove the Nth object from the list
SWAP M N - Interchange the positions of the Mth and Nth
objects on the list
For credit, the two nodes must actually \"trade places\" in the list, and not merely swap their data
values
REVERSE - Reverse the order of the objects on the list
This must be done by reversing the order of the nodes themselves, rather than by swapping the
data stored
To get credit for your reverse() method, it must use either one of these 2 algorithms:
For each node on the list except the current “head”
node, delete the node and insert it as the new head
Use your swap() method
6. CLEAR – Clear the list (make it empty)
No credit will be given for programs that use any additional data structures – either from the Java
API or programmer defined -, other than your own LinkedList class
txt file:
Solution
//Java Program to Implement Singly Linked List
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
/* Class Node */
class Nodes
{
protected Object data;
protected Nodes next;
/* Constructor */
public Nodes()
{
next = null;
data = null;
}
/* Constructor */
public Nodes(Object d,Nodes n)
{
data = d;
next = n;
}
/* Function to set link to next Node */
public void setLink(Nodes n)
{
next = n;
}
/* Function to set data to current Node */
public void setData(Object d)
{
data = d;
}
/* Function to get link to next node */
public Nodes getLink()
{
return next;
}
/* Function to get data from current Node */
public Object getData()
{
return data;
}
}
/* Class linkedList */
class linkList
{
protected Nodes start;
protected Nodes end ;
public int size ;
/* Constructor */
public linkList()
{
start = null;
end = null;
size = 0;
}
/* Function to check if list is empty */
public boolean isEmpty()
{
return start == null;
}
/* Function to get size of list */
public int getSize()
{
return .
in C++ , Design a linked list class named IntegerList to hold a seri.pdf
in C++ , Design a linked list class named IntegerList to hold a series of integers. The class must
have public member functions for appending , inserting, deleting and displaying nodes. The
append function must append a node to the end of the list. The insert function must insert node in
ascending order. The delete function must delete the node with the given value. The display
function should display the list from head to tail. The IntegerList class should also have a
destructor that destroys the list and release memory. The list node must be declared as a structure
using keyword struct. This structure is a private member of IntegerList. You should also store the
head of the list as a private member.
Write a test program to test the implementation your IntegerList class works properly.
Solution
Here is the code for the above scenario:
#include
using namespace std;
struct ListNode
{
float value;
ListNode *next;
};
ListNode *head;
class LinkedList
{
public:
int insertNode(float num);
int appendNode(float num);
void deleteNode(float num);
void destroyList();
void displayList();
LinkedList(void) {head = NULL;}
~LinkedList(void) {destroyList();}
};
int LinkedList::appendNode(float num)
{
ListNode *newNode, *nodePtr = head;
newNode = new ListNode;
if(newNode == NULL)
{
cout << \"Error allocating memory for new list member!\ \";
return 1;
}
newNode->value = num;
newNode->next = NULL;
if(head == NULL)
{
cout << \"List was empty - \" << newNode->value;
cout << \" is part of list\'s first node.\ \";
head = newNode;
}
else
{
while(nodePtr->next != NULL)
nodePtr = nodePtr->next;
nodePtr->next = newNode;
}
return 0;
}
int LinkedList::insertNode(float num)
{
struct ListNode *newNode, *nodePtr = head, *prevNodePtr = NULL;
newNode = new ListNode;
if(newNode == NULL)
{
cout << \"Error allocating memory for new list member!\ \";
return 1;
}
newNode->value = num;
newNode->next = NULL;
if(head==NULL) {
cout << \"List was empty - \" << newNode->value;
cout << \" is part of list\'s first node.\ \";
head = newNode;
}
else
{
while((nodePtr != NULL) && (nodePtr->value < num)) {
prevNodePtr = nodePtr;
nodePtr = nodePtr->next;
}
if(prevNodePtr==NULL)
newNode->next = head;
else
newNode->next = nodePtr; prevNodePtr->next = newNode;
}
return 0;
}
void LinkedList::deleteNode(float num)
{
struct ListNode *nodePtr = head, *prevNodePtr = NULL;
if(head==NULL) {
cout << \"The list was empty!\ \";
return;
}
if(head->value == num) {
head = nodePtr->next;
delete [] nodePtr;
}
else
{
while((nodePtr!= NULL)&&(nodePtr->value != num)) {
prevNodePtr = nodePtr;
nodePtr = nodePtr->next;
}
if(nodePtr==NULL)
cout << \"The value \" << num << \" is not in this list!\ \";
else {
prevNodePtr->next = nodePtr->next;
delete [] nodePtr;
}
}
}
void LinkedList::destroyList()
{
struct ListNode *nodePtr = head, *nextNode = nodePtr;
if(head==NULL) {
cout << \"The list is empty!\ \";
return;
}
while (nodePtr != NULL) {
nextNode = nodePtr->next;
delete [] nodePtr;
nodePtr = nextNode;
}
}
void LinkedList.
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are the most familior and obundant graup of producers Are aso known ab Autotrophs and
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