Week 5

 This week we learning about % on class, which means it divides a number and returns the remainder to the integer. I have trouble to understand % at the beginning, but then I am more understand it by Chinese, 0,1 more like just represent two states(可否被整除）.  

About % is it always be used with for()? I am kind hard to think in what other conditions(except checkerboard) I can use %.

for the concept of set up your own function I think it is more like a clear way to organized our code, and also have clear way to call deferent code by personalized function. 

I think one of  my problem is hard code, I think this can be always for me to remind myself to get code as clear, simple as possible. 

I am also thinking if it is possible to have some simple function, that can work by it own, and I can build a library for myself to use in the future. 

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