Comments by Kevinyou (Top 2 by date)

Alternate 13 is the best? Do you read my alternate carefully ? Do you noticed I use the FOR loop, and loop count is 1000,0000. If you use the regular expression to do the same thing, you can do a bath before you get the ellapsed time! Actually, REGULAR EXPRESSION is the worst one!
Alternate 11 did not use pointer, he just used array and char. :-)

If you decide which is the best by execute one method once a time, you will get the wrong answer.