On Fri, Jan 25, 2013 at 8:00 AM, <[email protected]> wrote:
> Am 25.01.2013 05:23, schrieb Matthew Kerwin:
>
>> Note: a regular rubyist would probably just write: `base ** exponent`
>
>
> Or (as an exercise) at least without using the while loop, e.g.
>
>
> def pow(base, exponent)
> result = 1
> exponent.times { result = result * base }
>
> result
> end
We can make it a little shorter by using *=
def pow(base, exponent)
result = 1
exponent.times { result *= base }
result
end
And while we're at it...
def pow(base, exponent)
exponent.times.inject(1) {|result,| result * base}
end
All without error handling btw. negative exponents wouldn't work so well. :-)
Cheers
robert
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