@Override
	public Boolean compareAnswer(Object input) {
		if (!(input instanceof int[])) return false;
		int[] inputArray = (int[])input;
		if (inputArray.length!=items.size()) return false;
		int count = 0;
		for (Integer key: items.keySet()){
			if ( inputArray[count] != key) return false;
			++count;
		}
		return true;
	}