From: "Mehr, Assaph (Assaph)" <assaph@...>
Date: 2004-08-04T09:40:06+09:00
Subject: Re: Fastest way to reverse-process a string?


>> Have you tried benchmark?
> I can only benchmark algorithms when I have more than one algorithm to
compare.
> I only thought of the one algorithm that I mentioned in my original
post, and so
> I had nothing to benchmark it against.
> I can easily do the benchmarking, and I was not asking anyone to do it
for me.
> I wrote my email because I was looking for algorithm suggestions, such
as the third
> one that you mentioned.  I was previously unaware of 'each_byte'.  I
also didn't
> think of trying the split('') version.

Sorry, didn't mean to imply anything. I just had wanted to show the
performance of the obvious ways I knew (as I couldn't think of anything
smarter).

> Thank you for these suggestions.

BTW, I also tried Simon's Iterator::Reverse (about 13 seconds) and an
explicit idx-- type loop (about 3 seconds). I just wanted to show that
the reverse.each_byte (as explained by Joel) creates less objects and
seems fastest. Sorry for not making myself clear :(