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Monday, November 12, 2018

PROGRAM TO CONCATENATE TWO LISTS TO 3rd



#include <iostream>
#include <conio.h>
#include <stdlib.h>

using namespace std;

class Chain;

class Node
{
private:
    int Info;
    Node *Link;

    friend class Chain;
};

class Chain
{
private:
    Node *First;

public:
    Chain()
    {
        First = NULL;
    }

    void Insert(int No)
    {
        Node *Temp = new Node;

        Temp->Info = No;
        Temp->Link = First;

        First = Temp;
    }

    void Concate_List(Chain Ptr1, Chain Ptr2)
    {
        Node *Temp2;
        for(Temp2 = Ptr2.First; Temp2 != NULL; Temp2 = Temp2->Link)
            Insert(Temp2->Info);

        Node *Temp1;
        for(Temp1 = Ptr1.First; Temp1 != NULL; Temp1 = Temp1->Link)
            Insert_End(Temp1->Info);
    }

    void Insert_End(int Value)
    {
        Node *Temp, *Temp1;

        Temp = First;
        Temp1 = new Node;


        Temp1->Info = Value;
        Temp1->Link = NULL;

        if(First == NULL)
            First = Temp1;

        else
        {
            while(Temp->Link != NULL)
                Temp = Temp->Link;

            Temp->Link = Temp1;
        }
    }

    void Print()
    {
        if(ListMsg())
        {
            cout << "\nLIST UNDERFLOWED...!!!\n" << endl;
            exit(1);
        }

        cout << "Elements in Node Is: " <<endl;
        for(Node *Temp = First; Temp != NULL; Temp = Temp->Link)
            cout << Temp->Info << endl;
    }

    inline bool ListMsg()
    {
        return First == NULL;
    }
};


int main()
{
    Chain Obj1, Obj2, Obj3;

    Obj1.Insert(12);
    Obj1.Insert(13);
    Obj1.Insert(14);
    Obj1.Insert(15);
    Obj1.Insert(16);

    Obj2.Insert(17);
    Obj2.Insert(18);
    Obj2.Insert(19);
    Obj2.Insert(20);
    Obj2.Insert(21);

    cout << "\n1st and 2nd list has been Concatenated to 3rd List......\n" << endl;
    Obj3.Concate_List(Obj1, Obj2);
    Obj3.Print();

    getch();
    return 0;
}

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