create max heap

max heap java

import java.util.PriorityQueue;

public class MaxHeapWithPriorityQueue {

    public static void main(String args[]) {
        // create priority queue
        PriorityQueue<Integer> prq = new PriorityQueue<>(Comparator.reverseOrder());

        // insert values in the queue
        prq.add(6);
        prq.add(9);
        prq.add(5);
        prq.add(64);
        prq.add(6);

        //print values
        while (!prq.isEmpty()) {
            System.out.print(prq.poll()+" ");
        }
    }

}

Posted by: Guest on August-02-2020

Source

// C++ program to show that priority_queue is by // default a Max Heap #include <bits/stdc++.h> using namespace std; // Driver code int main () { // Creates a max heap priority_queue <int> pq; pq.push(5); pq.push(1); pq.push(10); pq.push(30); pq.push(20); // One by one extract items from max heap while (pq.empty() == false) { cout << pq.top() << " "; pq.pop(); } return 0; }

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