午夜1000集92福利院

The policy pattern defines a series of algorithms and encapsulates each algorithm so that they can be replaced with each other, and the changes in the algorithms will not affect the customers who use the algorithms. It is necessary to design an interface to provide a unified method for a series of implementation classes. Multiple implementation classes implement the interface, design an abstract class (optional, belonging to auxiliary class), and provide auxiliary functions. The diagram is as follows:Purple: Lithospermum, Black Bean, MulberryPublic interface ICalculator {Panshan Park is located on the north side of Jinpan Section of Jiangbin North Road in the urban area, with a total area of about 70 mu. It is the only riverside mountain park in Quanzhou. It is equipped with leisure tea kiosks, children's amusement parks, basketball courts and other facilities and equipment. It is equivalent to a natural fitness and leisure club, where you can climb mountains and drink tea for sightseeing.杨必归眨着眼睛问道：爹如果读过《论语》，会比现在更厉害么？杨长帆诚然道：爹也不知道。