public List<String> sortedKeys() { //Returns a List of type String, sorted based on their corresponding values. Uses insertion sort.
		List<String> keysList = getKeys();
		int index;
		int v;
		String s;
		for(int i = 0; i < keysList.size(); i++) {
			index = i;
			s = keysList.remove(i);
			v = getInt(s);
			for(int j = 0; j < i; j++) {
				if(v < getInt(keysList.get(j))) {
					index = j;
					break;
				}
			}
			keysList.add(index, s);
		}
		return keysList;
	}