做数理统计不是很久，自己照着公式敲了几个代码想放上来，一是分享分享
当然主要是想请大佬看看是不是有问题，我总感觉滑动t看起来怪怪的。。可我完全是照书上公式来的。
abruptChange内部包含了M-K，滑动t，yamamoto（山本）
trend里面没什么可看的东西。。就一元线性回归，滑动平均和累积距平(It is not very long ago to do mathematical statistics.
Of course, I want to ask the big guys to see if there is any problem. I always feel that sliding t looks strange. But I'm completely in the form of the formula in the book.
AbruptChange contains M-K, sliding T, Yamamoto (Yamamoto).
There's nothing to see in trend. On single linear regression, moving average and cumulative distance.)