https://blog.csdn.net/weixin_43886797/article/details/85569998
white num1
white num2
|num（1）-num （2）|=num （3）
until |num （n-1）-num（n）|=|num（n）-num（n+1）|=constant
white the answer is the constant
e.g132,12
132-12=120
120-12=118
118-12=106
12-12=0
12-0=12
12-0=12
the answer is 12
标签：12,constant,代码,num,answer,white,118 From： https://www.cnblogs.com/lin-zhi-yuan/p/16754589.html