public void percolateDOWN(int i){
		int left = getLeftChild(i);
		int right = getRightChild(i);

		if(heap[left] < heap[right] && heap[left] < heap[i]){
			int temp = heap[left];
			heap[left] = heap[i];
			heap[i] = temp;
			percolateDOWN(left);
		}else if (heap[right] < heap[left] && heap[right] < heap[i]){
			int temp = heap[right];
			heap[right] = heap[i];
			heap[i] = temp;
			percolateDOWN(right);
		}
	}