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[程序员] 请教一下，这种情况用哪个设计模式比较好呢

发表于
有个操作过程，需要执行 4 个步骤
step1()
step2()
step3()
step4()
要按照顺序执行
其中，step2 ，step4 要根据不同的场景进行单独开发
step1 和 step3 是公共化步骤，大家都一样
请问一下，哪种设计模式比较适合这个情况呢，我想着用工厂模式，但是感觉又有点不对
工厂模式不会限制执行步骤。
请教一下各位大佬，谢谢

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