q4

Vector<DataPoint> topK(istream& stream, int k) {

    HeapPQueue tempQ;

    for (DataPoint pt; stream >> pt; ) { //not sure if this actually iterates over the stream MAKE sure to CHECK THIS
        if (tempQ.size() < k){
            tempQ.enqueue(pt);
        }
        else{
            if (tempQ.peek().weight < pt.weight){
                tempQ.dequeue();
                tempQ.enqueue(pt);
            }
        }
    }
    Stack<DataPoint> notreverse;
    for (int i = 0; i < tempQ.size(); i++){
        notreverse.push(tempQ.dequeue());
    }
    Vector<DataPoint> reverse;
    for (int j = 0; j < notreverse.size(); j++){
        reverse.add(notreverse.pop())
    }


    return reverse;
}