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在下不懂规矩，将军认为多少合适？副千户又哼了一声：要缴给所里。　　世界上最漫长的磨难，不是玄奘西行，而是父亲的遗言是让柔弱的何木兰为他报仇，与沈书豪为敌……种种折磨让芙蓉般的何木兰变得心狠手辣，不择手段。她爱的人离她远去，而深爱着她的沈悦，她却一直没有珍惜。2017-07-14 17:45:00202. X.X.240唯有倭人头目，如今汪直徐海两位杀遍东海的老江湖不在，又开始叫嚣起来。If I were to implement a pizza ordering system, I would definitely write the code like this, because this kind of code can be written subconsciously without consuming our brains. However, take a closer look at this code: the purpose of this method is to order pizza. However, the code for ordering pizza also needs knowledge about the production of pizza. This method must know all pizza. Worse still, if the types of pizza are to be expanded or pizza with poor sales volume are to be deleted in the future, then the code for ordering pizza will be modified. It looks very bad and should be revised. Our first step must be to separate the code for producing Pizza from the code for ordering pizza, because you should not let the code for ordering Pizza know the logic for producing pizza, but should hand over the logic for producing Pizza to a special type. In this way, we can cope with future changes-if we want to add or delete pizza, we can directly modify the producer of pizza without affecting the logic of ordering pizza.Class behavior patterns-Use inheritance relationships to allocate behaviors among several classes.