Use C++ class Node{ public: Node ( int = 0 ); // constructor with default value

ID: 3939995 • Letter: U

Question

Use C++

class Node{

public:

Node ( int = 0 ); // constructor with default value for

// info field

int info; // data

Node * next; // pointer to next node in the list

};

and put the constructor in Node.cpp

// Constructor

Node::Node ( int data )

{

info = data;

next = nullptr;

}

Write the following using the Node class.

A function that copies a linked list pointed to by ptr and returns a pointer to the copied list. Please note: the copied list should be independent of the original list; the original list can be destroyed and the copy should still remain.

const Node * copy (Node * ptr);

Explanation / Answer

Need to perform 'Deep copy' here :

const Node * copy (Node * ptr)
   {
       //Create new list to hold copied items
       Node* newNode = new Node;

       //Return if empty list
       if (ptr->next == 0)
       {
           return newNode;
       }
       while(ptr !=NULL)
       {
           newNode->info = ptr->info;
           newNode->next = ptr->next;
           ptr = ptr ->next;
       }
       return newNode;
   }

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Use C++ class Node{ public: Node ( int = 0 ); // constructor with default value

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Explanation / Answer

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