Define a class named LinkedList that represents a singly linked list. The class should have the following member functions: Linked List: A constructor that initializes an empty linked list. void insertAtEnd(int data): Inserts a new node with the given data at the end of the linked list. void deleteNode(int data): Deletes the first occurrence of the node with the specified data from the linked list. void display(): Displays the elements of the linked list. Additionally, implement a function int countNodes() outside the class that returns the total number of nodes in the linked list. Create a program to test the functionality of the Linked List class. Use the following code as a starting point: #include using namespace std; // Define the Linked List class here int countNodes(const LinkedList& list); int main() { Linked List myList; // Create an empty linked list // Test the insertAtEnd function myList.insertAtEnd(10); myList.insertAtEnd(20); myList.insertAtEnd(30); } cout << "Initial Linked List: "; myList.display(); cout <<< endl; // Test the deleteNode function myList.deleteNode(20); cout << "Linked List after deleting 20: "; myList.display(); cout << endl; // Test the countNodes function cout << "Number of nodes in the linked list: " << countNodes(myList) << endl; return 0;

C++ Programming: From Problem Analysis to Program Design

8th Edition

ISBN:9781337102087

Author:D. S. Malik

Publisher:D. S. Malik

Chapter17: Linked Lists

Section: Chapter Questions

Problem 13PE

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Define a class named LinkedList that represents a singly linked list. The class should
have the following member functions:
Linked List: A constructor that initializes an empty linked list.
void insertAtEnd(int data): Inserts a new node with the given data at the end of the
linked list.
void deleteNode(int data): Deletes the first occurrence of the node with the specified
data from the linked list.
void display(): Displays the elements of the linked list.
Additionally, implement a function int countNodes() outside the class that returns the
total number of nodes in the linked list.
Create a program to test the functionality of the Linked List class. Use the following
code as a starting point:
#include <iostream>
using namespace std;
// Define the Linked List class here
int countNodes(const Linked List& list);
int main() {
Linked List myList; // Create an empty linked list
}
// Test the insertAtEnd function
myList.insertAtEnd(10);
myList.insertAtEnd(20);
myList.insertAtEnd(30);
cout<< "Initial Linked List: ";
myList.display();
cout << endl;
// Test the deleteNode function
myList.deleteNode(20);
cout << "Linked List after deleting 20: ";
myList.display();
cout << endl;
// Test the countNodes function
cout << "Number of nodes in the linked list: " << countNodes(myList) << endl;
return 0;

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