private MeldNode<E> meld(MeldNode<E> n1, MeldNode<E> n2) {
		if(n1 == null) return n2;
		else if(n2 == null) return n1;
		else {
			int comp = n1.compareTo(n2);
			if(comp > 0){ 
				MeldNode<E> tmp = n1;
				n1 = n2;
				n2 = tmp;
			}
			boolean toss = coin.nextBoolean();
			if(toss){ 
				n1.leftChild = meld(n1.leftChild, n2);
			}
			else {
				n1.rightChild = meld(n1.rightChild, n2);
			}
			return n1;
		}
	}