https://leetcode-cn.com/problems/ba-zi-fu-chuan-zhuan-huan-cheng-zheng-shu-lcof/
https://leetcode-cn.com/problems/ba-zi-fu-chuan-zhuan-huan-cheng-zheng-shu-lcof/solution/ba-zi-fu-chuan-zhuan-huan-cheng-zheng-sh-epeo/
接下来编程部分就非常简单了：我们只需要把上面这个状态转换表抄进代码即可。
另外自动机也需要记录当前已经输入的数字，只要在 s' 为 in_number 时，更新我们输入的数字，即可最终得到输入的数字。
作者：LeetCode-Solution
链接：https://leetcode-cn.com/problems/ba-zi-fu-chuan-zhuan-huan-cheng-zheng-shu-lcof/solution/ba-zi-fu-chuan-zhuan-huan-cheng-zheng-sh-epeo/