# 任务11：再撸一遍

最后的任务很简单，那就是再做一遍这道题。

这次练习，除了希望你仍然保持和贯彻**每分钟都能通过测试**这个好习惯，还需要你多留意重构的次序。你需要辨别出明确的坏味道来开始重构，同时，你还需要培养出处理不同坏味道先后顺序的经验和感觉。一般来说，从易到难的次序既比较符合人脑的学习和认知习惯，也利于逐步培养对代码的理解和重构的信心。

## 你的任务

* 重新做一下这道题
* 记得频繁运行测试；如果测试失败，需要回滚刚刚的更改

## 思考

* 相比课程一开始，感觉自己什么地方进步了？
* 这道题有没有不同的重构次序？
* 试试看，能在多长时间内完成这个重构？


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