[Stinged]

How do you do your benchmarks?

I tried out the third slowest one:

Код:

new j = -1;
while(string[++ j])

And this one (which is supposedly faster):

Код:

for (new j = strlen(str)-1; j > -1; j--)

(All according to your list)

It turned out that the while loop is actually faster.
(I tested it out on a 34 characters long string)

Either I'm doing something wrong, or you are.
Can you please post the code?