@Override
	public void insert(int i, int j, double value) {
		for (Element e : elems) {
			accessCount += 1; // durchsuchen des elements
			if (e.getI() == i && e.getJ() == j) {
				elems.remove(e);
				break;
			}
		}
		if (Double.compare(value, 0.0) != 0) { // only non zero values need to
												// be added
			elems.add(new Element(i, j, value));
			accessCount += 1; // hinzufuegen eines NonZero elements
		}
	}