Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Can someone help me with C++? I have to implement a priorityQueue Linked List.

//////////////////////////////////////////

driver.cpp

//////////////////////////////////////////

#include <iostream>
#include <string>
#include "stackLL.h"
#include "queueLL.h"
#include "priorityQueueLL.h"
using namespace std;

int main()
{

    //////////Test code for priority queue/////

priorityQueueLL<int> pQueue;

    const int SIZE = 20;

    //insert a bunch of random numbers
    for (int i = 0; i < SIZE; i++)
    {
        pQueue.insert(rand());
    }

    //pull them back out..
    //They must come out in order from smallest to largest
    while (!pQueue.empty())
    {
        cout << pQueue.extractMin() << endl;
    }


    priorityQueueLL<string> pqs;

    pqs.insert("whale");
    pqs.insert("snake");
    pqs.insert("buffalo");
    pqs.insert("elmo");
    pqs.insert("fire");
    pqs.insert("waffle");

    //buffalo elmo fire snake waffle whale
    while (!pqs.empty())
    {
        cout << pqs.extractMin() << endl;
    }

    return 0;
}

//////////////////////////////////////////

priorityQueueLL.h  (In the image) 

//////////////////////////////////////////

 

template <class T>
class priorityQueueLL
{
private:
class node
{
public:
//put what you need here..
}
//add what you wish here
public:
priorityQueueLL ()
{}
rpriorityQueuelL ()
{}
//return true if empty, false if not
bool empty()
{}
//add item
void insert(T x)
{}
//remove and return smallest item
I extractMin()
{}
};
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Transcribed Image Text:template <class T> class priorityQueueLL { private: class node { public: //put what you need here.. } //add what you wish here public: priorityQueueLL () {} rpriorityQueuelL () {} //return true if empty, false if not bool empty() {} //add item void insert(T x) {} //remove and return smallest item I extractMin() {} };
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