What the f**k ???
I never realized I was so stupid like this.

Actually, it's a kind of method name contains

Seems include some useless part.

I like this solution, it is much cleaner than my code with same logic

I haven't thought about this,

Strict integer remainder. Computes self % rhs, panicking if the division results in overflow.

I didn't even think of that. I used if

and also help to avoid the symbol inside 091~096

bros, is it really necessary to construct a struct to solve the probleam?

I cannot understand which function has been call, i check the docs but it seems haven't a kind of i32::max() function there.

Is it using the Iterator::max ? Returns the maximum element of an iterator. seems not fit which this situation.

thks for any help

I guess it's the overflow considerations?