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JavaScript

Posted by Embie Wong
Embie Wong
3,180 Points

I don't understand why the lower number is subtracted from the higher number, then the lower number is added.

Hi,

I don't really understand the explanation behind subtracting the lower number from the higher one, then adding the lower one again. Is there a simpler explanation to why this is done? Thanks!

2 Answers

Steven Parker
Steven Parker
231,141 Points
Steven Parker
Steven Parker
231,141 Points

The lower is subtracted from the higher and then one is added to produce the range. This value represents how many possible numbers the random choice will pick from. But this range of numbers will always begin with 0.

The lower number is added after multiplying (picking from) the range to shift the range back where the minimum and maximum should be.

Embie Wong
Embie Wong
3,180 Points
Embie Wong
Embie Wong
3,180 Points

Oh, ok! I get it now. Thanks so much!