K Largest Elements

KLargest.cpp

/*
    K Largest Elements 
    Given an array, print k largest elements from the array.  
    The output elements should be printed in decreasing order.
    
    By    : Varun Thakur
    Dated : 27/07/2017
*/
#include <bits/stdc++.h>
using namespace std;

int main() {
	//code
	int t;cin>>t;
	while(t--)
	{
	    
	    int n,k;cin>>n>>k;
	    int el;
	    priority_queue<int> pq;
	    for(int i=0;i<n;i++)
		{
		    cin>>el;
		    pq.push(el);
		}
	    
	    while(k--)
		{   
		    cout<< pq.top() <<' ';
		    pq.pop();
		}

        cout<<'\n';
	}
	return 0;
}