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Factory, Builder, Factory Method, Prototype, Singleton, Facade, Adapter, Bridge, Composite, Decorator, Proxy, Command, Interpreter, Iterator, Mediator, Memoto, Observer, State, Strategy, Template Method光头拿刀抵着杨长帆的脖子，转头冲毛海峰道：公子，天已大亮，不宜拖延，直接一刀子了事吧？光头话音未落，只见远处一妇人双手举着铁铲，亡命杀来。Https://www.cnblogs.com/zhouyu2017/p/6485265.html原本家庭美满生活幸福的人妻Tiffany在自己家中遭遇匪徒，匪徒以Tiffany的丈夫被绑架的视频要求Tiffany与之假扮168小时夫妻， Tiffany却在与歹徒斗智斗勇，努力寻找解救丈夫线索的过程中发现了很多自己从来都不知道的往事和真相……有葫芦开头，接下来小葱、板栗、黄瓜，你们兄妹都这么来。The core idea is: when the state of the object changes, it changes its behavior at the same time, which is very understandable! Take QQ for example. There are several states, online, invisible, busy, etc. Each state corresponds to different operations, and your friends can also see your state. Therefore, the state mode is two points: 1. You can obtain different behaviors by changing the state. 2. Your friends can see your changes at the same time. Look at the picture: