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Factory Pattern: Factory Pattern is a frequently used pattern. Classes implemented according to Factory Pattern can generate instances of one of a group of classes according to the provided data. Usually, this group of classes has a common abstract parent class and implements the same methods, but these methods perform different operations for different data. First of all, we need to define a base class. Subclasses of this class implement methods in the base class through different methods. Then you need to define a factory class that can generate different subclass instances according to conditions. After getting an instance of a subclass, developers can call methods in the base class regardless of which subclass instance is returned.Use ExampleEnsure that all relevant MDT members can participate in discussions and speeches;The final attack is 500 points. The enemy's final defense is 200 points. (The formula for how to calculate the damage will be listed below)元末明初,湘皖武林七修因和滇南丹凤轩水红芍有过节，放火烧山，致水红芍面目尽毁，武功尽废。十六年后，死里逃生的水红芍携风华绝貌武艺高强的甘十九妹卷土重来，誓报当年深仇。她们刀锋指处，所向披靡，相继灭了武林七俢的所有门派，一场场杀戮在江湖搅起波澜。侥幸逃过追杀的岳阳门记室弟子尹剑平在数度与十九妹短兵相接之中，察觉对方正是自己苦苦寻找的指腹姻缘芳儿。在正与邪、爱与恨、情与仇的重重矛盾中，渐次了悟的十九妹决定与水红芍扬镳，却因水红芍施毒太深生命垂危。尹剑平决心用他的爱挽救十九妹的生命身处两个天界贵公子中间，加上天界和魔界的斗争，单纯的锦觅注定无法如母亲所愿安度此生……叶麻颤颤提着刀：怎么个意思？就是吃定老子了？有种提刀来砍