Math challenge thing

[Ken Ray]

On 7/30/06 1:03 PM, "J. Landman Gay" <jacque at hyperactivesw.com> wrote:

> I had to write a loop the other day that cycled around a list of 4
> numbers. Usually when I need to do that, I like to use the following,
> where x is the current number that I want to increase:
> 
>    put (x mod 4)+1 into x
> 
> This goes around and around, giving a value of x between 1 and 4. But
> this time I needed to include zero. I need a series "0,1,2,3". No matter
> how I tinkered, I couldn't get a zero out of it.
> 
> I wrote it the long way: if x = 3 then put 0 into x
> 
> But I got curious. Is there a way to do it the cool way? I'm a math
> idiot so maybe it's easy.

Couldn't you just use:

  put (x mod 4) into x

as in:

on mouseUp
  put 12 into tMax
  repeat with x = 1 to tMax
    put (x mod 4) & "," after fld 1
  end repeat
end mouseUp

Result:

1,2,3,0,1,2,3,0,1,2,3,0,

The first number starts with "1", though. If you need it to start with 0,
you could do the same thing but start your loop with "0" instead of "1" and
go to (max -1):

on mouseUp
  put 12 into tMax
  repeat with x = 0 to (tMax-1)
    put (x mod 4) & "," after fld 1
  end repeat
end mouseUp

Result:

0,1,2,3,0,1,2,3,0,1,2,3,

HTH,

Ken Ray
Sons of Thunder Software
Web site: http://www.sonsothunder.com/
Email: kray at sonsothunder.com