Question: Doubly Linked List Assignment in windows Doubly Linked List is a data structure that holds a list of items with double links: previous and next.

Doubly Linked List Assignment in windows

Doubly Linked List is a data structure that holds a list of items with double links: previous and next. In this assignment, you need to implement all functions in the defined ListLinked class (prototype is provided by the instructor). Please read the comments and complete them using C++. You need to implement all of the ListLinked ADT functions in ListLinked.cpp file, and test them in main.cpp.

//--------------------------------------------------------------------

//

// Homework 3 ListLinked.h

//

// Class declaration for the Doubly linked implementation of the List ADT

//

//--------------------------------------------------------------------

#ifndef LISTLINKED_H

#define LISTLINKED_H

#include

using namespace std;

template

class ListNode { // doubly linked list node

public:

ListNode(const DataType& nodeData, ListNode* nextPtr, ListNode* prevPtr);

DataType dataItem;

ListNode* next;

ListNode* prev;

};

template

class List { // a list implemented using doubly linked nodes

public:

List();

List(const List& other); // copy constructor

List& operator=(const List& other); // assignment operator

~List();

void insert(const DataType& newDataItem); // insert an item after cursor

void remove(); // remove the cursor node, and move the cursor to the next node. If the removed node is the last node, move the cursor to the beginning of the list

void replace(const DataType& newDataItem); // replace the cursor node value

void clear(); // clear the list, remove all nodes

bool isEmpty() const;

bool isFull() const;

void gotoBeginning(); // move cursor to the beginning of the list

void gotoEnd(); // move cursor to the end of the list

bool gotoNext(); // move cursor to the next node, return false if no next node is available

bool gotoPrior(); // move cursor to the prior node, return false if no prior node is available

DataType getCursor() const; // return the value of the cursor node

void moveToBeginning (); // move the cursor node to the beginning of the list

void insertBefore(const DataType& newDataItem); // insert a new item before the cursor

void print() const; // print the list, mark the cursor node

private: // Do not change them for this homework

ListNode* head;

ListNode* cursor;

};

#endif

//--------------------------------------------------------------------

template

List::List()

// Creates an empty list.

: head(0), cursor(0)

{

}

//--------------------------------------------------------------------

template

List::List(const List& other)

: head(0), cursor(0)

// Copy constructor. Creates a list which is equivalent in content

// to the "other" list.

{

operator=(other);

}

//--------------------------------------------------------------------

template

List& List::operator=(const List& other)

// Overloaded assignment operator. Reinitializes the list to be

// equivalent in content to the "other" list.

// Note: we include self-assignment protection by checking whether

// "this" object is identical to the "other" object.

{

if( this != &other ) {

clear();

ListNode *otherPtr = other.head;

ListNode *holdCursor = NULL;

while( otherPtr != NULL ) {

insert(otherPtr->dataItem);

if(otherPtr == other.cursor) {

holdCursor = cursor;

}

otherPtr = otherPtr->next;

}

cursor = holdCursor;

}

return *this;

}

//--------------------------------------------------------------------

template

List::~List()

// Destructor. Frees the memory used by a list.

{

clear();

}

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Databases Questions!