public void shiftLeft(int anzShifts, boolean fillIn) {
		if (anzShifts <= 0)
			return;
		for (int i = size - 1 - anzShifts; i >= 0; i--)
			bits[i + anzShifts] = bits[i];
		for (int i = 0; i < anzShifts; i++) {
			bits[i] = fillIn;
		}
	}