cis22c/07-heaps/main.cpp

/*
  This program will
     - read integers from the keyboard and insert them into a min-heap and a max-heap
     - display the integers as they are deleted from the min-heap.
     - display the integers as they are deleted from the max-heap.

   Written By: Iurii Tatishchev
   Changed by: Iurii Tatishchev
   IDE: CLion
*/

#include <iostream>
#include "Heap.h"

using namespace std;

int compareMin(int, int);

int compareMax(int, int);

int main() {
    Heap minHeap(32);
    Heap maxHeap(32);

    // build min- and max-heaps
    int num;
    cout << "Enter integers [0 - to stop]" << endl;
    cin >> num;
    while (num != 0) {
        minHeap.insertHeap(num, compareMin);
        maxHeap.insertHeap(num, compareMax);
        cin >> num;
    }

    // print items as they are deleted from the min-heap (sorted in ascending order)
    cout << "Min-Heap: ";
    while (!minHeap.isEmpty()) {
        minHeap.deleteHeap(num, compareMin);
        cout << num << " ";
    }
    cout << endl;

    // print items as they are deleted from the heap (sorted in descending order)
    cout << "Max-Heap: ";
    while (!maxHeap.isEmpty()) {
        maxHeap.deleteHeap(num, compareMax);
        cout << num << " ";
    }
    cout << endl;

    return 0;
}

/*
  compare two data items: needed to build a min-heap
*/
int compareMin(int x, int y) {
    if (x < y)
        return -1;
    if (x == y)
        return 0;
    return 1;
}

/*
  compare two data items: needed to build a max-heap
*/
int compareMax(int x, int y) {
    if (x > y)
        return -1;
    if (x == y)
        return 0;
    return 1;
}