CS301 Assignment 1 Solution and Discussion

zareen

Assignment No. 01
Semester Fall 2019
CS301- Data Structures Total Marks: 20

Due Date : 18-Nov-2019
Instructions
Please read the following instructions carefully before solving & submitting assignment:
It should be clear that your assignment will not get any credit (zero marks) if:
o The assignment is submitted after due date.
o The submitted code does NOT compile.
o The submitted assignment is other than .CPP file.
o The submitted assignment does NOT open or file is corrupted.
o The assignment is copied (from other student or ditto copy from handouts or internet).
Uploading instructions
For clarity and simplicity, You are required to Upload/Submit only ONE .CPP file.

Note: Use ONLY Dev-C++ IDE.
Objective
The objective of this assignment is

o To make you familiar with implementing the Doubly Linked List data structure in C++ programming language.

For any query about the assignment, contact at [email protected]

GOOD LUCK

Marks: 20
Problem Statement:

You have to implement a Double Linked List in C++ language in which you have to create a structure and two classes as given below:

A structure named as “StudentDetail” by using struct keyword.
StudentDetail structure should consist of following data members of type “string”.
name
vuid
A node class named as “Node” by using class keyword.
Node class will have following data members and member functions:
```
 (“X” denotes StudentDetail variable means the student details and “Y” denotes the data value of the node).
```
A doubly linked list class named as “DoublyLinkedList” by using class keyword.
DoublyLinkedList class will have following data members and member functions:

Detailed description of member functions of DoublyLinkList class:

addAtBegining(X): To add the node at the beginning of the doubly linked list class.
addAtEnd(X): To add the node at the End of the doubly linked list class.
delNode(): To delete a node pointed by current pointer in the doubly linked list.

display():To display all student details in doubly linked list.

      (“X” denote Node to add in the doubly linked list).

In the main ( ) function you have to do the following:

Create two objects of type StudentDetail at the Beginning of the doubly linked list class using addATBegining (X) method of DoublyLinkedList and use display() method to display doubly linked list.
Note that first object should contain your own VU ID and your own name otherwise you will get zero marks.
Create one objects of type StudentDetail at the End of the doubly linked list class using addAtEnd (X) method of DoublyLinkedList and use display() method to display doubly linked list.
Delete current node of the doubly linked list and use display() method to display doubly linked list.
Display doubly linked list after calling each functions.

Detailed Output Screenshot:

Lectures Covered: This assignment covers Lecture # 1-8.
Deadline: Your assignment must be uploaded/submitted at or before 18-Nov-2019.

zareen

100 % Solved:

// Include header files
#include<iostream>
#include<string.h>
#include<conio.h>
#include<stdlib.h>
using namespace std;

// Create Structure of StudentDetail
struct StudentDetail{
	string name;
	string vuid;
};

// Create a Node class

class Node{

// Data Members of Node class
private:
	StudentDetail newStd;
	Node *prev;
	Node *next;

// Member Functions of Node class
public:
	
	// Set and get data
	void set(StudentDetail newStd){
		this->newStd = newStd;
	}
	
	StudentDetail get(){
		return newStd;
	}
	
	// Set and get next node pointer
	void setNext(Node *nextPtr){
		next = nextPtr;
	}
	
	Node* getNext(){
		return next;
	}
	
	// set and get previous node pointer
	void setPrev(Node *prevPtr){
		prev = prevPtr;
	}
	
	Node* getPrev(){
		return prev;
	}
};
// Create a DoublyLinkedList class 

class DoublyLinkedList{
// Data Members of DoublyLinkedList class
private:
	
	Node *headPtr;
	Node *curPtr;
	int size;
// Member Functions of DoublyLinkedList class
public:
	
	// Constructor of DoublyLinkedList class
	DoublyLinkedList(){
		headPtr=new Node;
		headPtr->setNext(NULL);
		headPtr->setPrev(NULL);
		curPtr=NULL;
		size = 0;
	}
	// Add node at the begining of DoublyLinkedList class
	
	void addAtBegining(Node *newNode){
		
		if(headPtr->getNext()==NULL){
			newNode->setNext(headPtr->getNext());
			headPtr->setNext(newNode);
			newNode->setPrev(headPtr);
			curPtr = newNode; 
		}
		else{
			
			newNode->setNext(headPtr->getNext());
			Node *tempNode = headPtr->getNext();
			tempNode->setPrev(newNode);
			headPtr->setNext(newNode);
			newNode->setPrev(headPtr);
		}
		size++;
	}
	
	// Add node at the end of DoublyLinkedList Class
	void addAtEnd(Node *newNode){
		
		if(curPtr==NULL){
			newNode->setNext(headPtr->getNext());
			headPtr->setNext(newNode);
			newNode->setPrev(headPtr);
			curPtr = newNode;
		}
		else{
			newNode->setNext(curPtr->getNext());
			curPtr->setNext(newNode);
			newNode->setPrev(curPtr);
			curPtr = newNode;
		}
		
		size++;
	}
	// Deleting the current node
	void delNode(){
		Node *tempCur = curPtr;
		
		if(curPtr==NULL){
			cout<< "List is Empty";
		}
		else{
			
			tempCur = curPtr->getPrev();
			tempCur->setNext(curPtr->getNext());
			delete curPtr;
			curPtr = tempCur;
			size--;
		}
		
		
	}
	
	// Display method for DoublyLinkedList nodes
	
	void display(){
		
		Node *tempCur = headPtr->getNext();
		
		for(int i=0; i<size; i++){
			cout<<tempCur->get().name <<" "<<tempCur->get().vuid<< "--->";
			tempCur = tempCur->getNext();
		}
	}
	
	
};

int main(){
	// Initializing Student data in structure variables
	StudentDetail  r1={"BC123457896","Ali"};
	StudentDetail  r2={"BC123458967","Basit"};
    StudentDetail  r3={"BC123458963","Agha"};

	
	// Create new nodes 
	Node *newNode[3] ;
	newNode[0] = new Node();
	newNode[1] = new Node();
	newNode[2] = new Node();

	newNode[0]->set(r1);
	newNode[1]->set(r2);
	newNode[2]->set(r3);


	// Create an object of DoublyLinkedList and calling the required methods
	DoublyLinkedList *dll = new DoublyLinkedList();
	cout<<"\n";
	cout<<"  Add Your VUid and Name at First Position\n";
	cout<<"  -----------------------------------------------\n"<<endl;
	dll->addAtBegining(newNode[0]);  // adding 1st node at start
	cout<<"  ";
	dll->display();
	cout << endl ;
	
	cout<<"\n\n\n  Insertion at Beginning in Doubly Linked List\n";
	cout<<"  -----------------------------------------------\n"<<endl;
	dll->addAtBegining(newNode[1]); // adding 2nd node at start 
	cout<<"  ";
	dll->display();
	cout << endl  ;

	cout<<"\n\n\n  Insertion at End in Doubly Linked List\n";
	cout<<"  -----------------------------------------------"<<endl;
	cout<<"\n";
	dll->addAtEnd(newNode[2]); // adding 3rd node at end
	cout<<"  ";
	dll->display();
	cout << endl  ;
	
	// Deleting current (last) node at the end
	cout<<"\n\n\n  Deltion of current node (Last Node)\n";
	cout<<"  -----------------------------------------------\n"<<endl;
	dll->delNode();
	cout<<"  ";
	dll->display();

	cout<<"\n\n\n\n";
	system("pause");
	return 1;
}

zareen

.CPP File Code

using namespace std;
 
#include <stdlib.h>
#include <iostream>
 
struct StudentDetail{
     
    string name;
    string vuid;
     
     
};
 
//class Node* head;
 
 
class Node{
     
    struct StudentDetail newStd;
    class Node* next;
    class Node* prev;
     
    void Set(string name,string vuid)
    {
        newStd.name=name;
        newStd.vuid=vuid;
         
         
    }
     
    Node Get()
    {
             
    }
     
    void setNext(string name,string vuid){
         
        if(next==NULL)
        {
             
        }
        else
        {
            class Node* newNode= new Node();
             
                newStd.name=name;
                newStd.vuid=vuid;
                newNode->next= newNode;
         
             
             
    }   }
     
    string getNext()
    {
        next;
         
    }
     
        void setPrev(string name,string vuid){
         
        if(next==NULL)
        {
             
        }
        else
        {
            class Node* newNode= new Node();
             
                newStd.name=name;
                newStd.vuid=vuid;
                newNode->next= newNode;
         
             
             
    }   }
     
        string getPrev()
    {
        prev;
         
    }
     
     
};
 
 
 
class DoublyLinkedList{
    public:
    struct StudentDetail newStd;
class DoublyLinkedList* headPtr;
class DoublyLinkedList* curPtr;
class DoublyLinkedList* nextPtr;
int size;
//dfdf
 
class DoublyLinkedList* headDlinkList=NULL;
 
void addAtBegining(string vuid, string name)
{
class DoublyLinkedList* dNode= new DoublyLinkedList();
 
    dNode->newStd.vuid=vuid;
    dNode->newStd.name=name;
    dNode->nextPtr=headDlinkList;
    headDlinkList= dNode;
    dNode->curPtr=dNode;
     
     
     
    }
     
void addAtEnd(string vuid, string name)
{
 
    class DoublyLinkedList* dNode= new DoublyLinkedList();
 
    dNode->newStd.vuid=vuid;
    dNode->newStd.name=name;
    dNode->nextPtr=headDlinkList;
    headDlinkList= dNode;
        dNode->curPtr=dNode;
     
    }   
     
     
 void delNode()
 {
    class DoublyLinkedList* temp1=curPtr;
    class DoublyLinkedList* temp2= temp1;
    temp1->nextPtr= temp2->nextPtr;
     
    free(temp2);
     
     
     
     
     
 }
     
     
     
     
    void print()
    {
     
   class DoublyLinkedList* temp= headDlinkList;
    
   while(temp!=NULL)
   {
 cout<<temp->newStd.vuid<<"      "<<temp->newStd.name<<endl;  
    temp= temp->nextPtr;
         
}
         
    }
 
 
 
 
     
};
 
 
 
 
int main()
{
    string vuid,name;
     
cout<<"Add your vuID and Name at First Position "<<endl;
cout<<"_ _ _ _ _ _ _ _ __ _ _ _ _ _ _ _ __ _ _ _ _ _ _ _ __ _ _"<<endl;
 
    DoublyLinkedList dlist1;
 
     
    cin>>vuid;
    cin>>name;
     
    dlist1.addAtBegining(vuid,name);
    dlist1.print();
     
    cout<<"Insertion At Beginning in doubly Link List "<<endl;
    cout<<"_ _ _ _ _ _ _ _ __ _ _ _ _ _ _ _ __ _ _ _ _ _ _ _ __ _ _"<<endl;
        cin>>vuid;
    cin>>name;
    dlist1.addAtBegining(vuid,name);
dlist1.print(); 
 
        cout<<"Insertion At End in doubly Link List "<<endl;
    cout<<"_ _ _ _ _ _ _ _ __ _ _ _ _ _ _ _ __ _ _ _ _ _ _ _ __ _ _"<<endl;
    cin>>vuid;
    cin>>name;
        dlist1.addAtEnd(vuid,name);
dlist1.print(); 
        cout<<"Deletion of Current Node (Last Node) "<<endl;
    cout<<"_ _ _ _ _ _ _ _ __ _ _ _ _ _ _ _ __ _ _ _ _ _ _ _ __ _ _"<<endl;
    dlist1.delNode();
    dlist1.print();
     
}

Download .cpp File

zareen

100 % Solved:

// Include header files
#include<iostream>
#include<string.h>
#include<conio.h>
#include<stdlib.h>
using namespace std;

// Create Structure of StudentDetail
struct StudentDetail{
	string name;
	string vuid;
};

// Create a Node class

class Node{

// Data Members of Node class
private:
	StudentDetail newStd;
	Node *prev;
	Node *next;

// Member Functions of Node class
public:
	
	// Set and get data
	void set(StudentDetail newStd){
		this->newStd = newStd;
	}
	
	StudentDetail get(){
		return newStd;
	}
	
	// Set and get next node pointer
	void setNext(Node *nextPtr){
		next = nextPtr;
	}
	
	Node* getNext(){
		return next;
	}
	
	// set and get previous node pointer
	void setPrev(Node *prevPtr){
		prev = prevPtr;
	}
	
	Node* getPrev(){
		return prev;
	}
};
// Create a DoublyLinkedList class 

class DoublyLinkedList{
// Data Members of DoublyLinkedList class
private:
	
	Node *headPtr;
	Node *curPtr;
	int size;
// Member Functions of DoublyLinkedList class
public:
	
	// Constructor of DoublyLinkedList class
	DoublyLinkedList(){
		headPtr=new Node;
		headPtr->setNext(NULL);
		headPtr->setPrev(NULL);
		curPtr=NULL;
		size = 0;
	}
	// Add node at the begining of DoublyLinkedList class
	
	void addAtBegining(Node *newNode){
		
		if(headPtr->getNext()==NULL){
			newNode->setNext(headPtr->getNext());
			headPtr->setNext(newNode);
			newNode->setPrev(headPtr);
			curPtr = newNode; 
		}
		else{
			
			newNode->setNext(headPtr->getNext());
			Node *tempNode = headPtr->getNext();
			tempNode->setPrev(newNode);
			headPtr->setNext(newNode);
			newNode->setPrev(headPtr);
		}
		size++;
	}
	
	// Add node at the end of DoublyLinkedList Class
	void addAtEnd(Node *newNode){
		
		if(curPtr==NULL){
			newNode->setNext(headPtr->getNext());
			headPtr->setNext(newNode);
			newNode->setPrev(headPtr);
			curPtr = newNode;
		}
		else{
			newNode->setNext(curPtr->getNext());
			curPtr->setNext(newNode);
			newNode->setPrev(curPtr);
			curPtr = newNode;
		}
		
		size++;
	}
	// Deleting the current node
	void delNode(){
		Node *tempCur = curPtr;
		
		if(curPtr==NULL){
			cout<< "List is Empty";
		}
		else{
			
			tempCur = curPtr->getPrev();
			tempCur->setNext(curPtr->getNext());
			delete curPtr;
			curPtr = tempCur;
			size--;
		}
		
		
	}
	
	// Display method for DoublyLinkedList nodes
	
	void display(){
		
		Node *tempCur = headPtr->getNext();
		
		for(int i=0; i<size; i++){
			cout<<tempCur->get().name <<" "<<tempCur->get().vuid<< "--->";
			tempCur = tempCur->getNext();
		}
	}
	
	
};

int main(){
	// Initializing Student data in structure variables
	StudentDetail  r1={"BC123457896","Ali"};
	StudentDetail  r2={"BC123458967","Basit"};
    StudentDetail  r3={"BC123458963","Agha"};

	
	// Create new nodes 
	Node *newNode[3] ;
	newNode[0] = new Node();
	newNode[1] = new Node();
	newNode[2] = new Node();

	newNode[0]->set(r1);
	newNode[1]->set(r2);
	newNode[2]->set(r3);


	// Create an object of DoublyLinkedList and calling the required methods
	DoublyLinkedList *dll = new DoublyLinkedList();
	cout<<"\n";
	cout<<"  Add Your VUid and Name at First Position\n";
	cout<<"  -----------------------------------------------\n"<<endl;
	dll->addAtBegining(newNode[0]);  // adding 1st node at start
	cout<<"  ";
	dll->display();
	cout << endl ;
	
	cout<<"\n\n\n  Insertion at Beginning in Doubly Linked List\n";
	cout<<"  -----------------------------------------------\n"<<endl;
	dll->addAtBegining(newNode[1]); // adding 2nd node at start 
	cout<<"  ";
	dll->display();
	cout << endl  ;

	cout<<"\n\n\n  Insertion at End in Doubly Linked List\n";
	cout<<"  -----------------------------------------------"<<endl;
	cout<<"\n";
	dll->addAtEnd(newNode[2]); // adding 3rd node at end
	cout<<"  ";
	dll->display();
	cout << endl  ;
	
	// Deleting current (last) node at the end
	cout<<"\n\n\n  Deltion of current node (Last Node)\n";
	cout<<"  -----------------------------------------------\n"<<endl;
	dll->delNode();
	cout<<"  ";
	dll->display();

	cout<<"\n\n\n\n";
	system("pause");
	return 1;
}