From: "Peña, Botp" <botp@...>
Date: 2007-08-07T10:16:32+09:00
Subject: Re: Determining the common prefix for several strings

From: Robert Klemme [mailto:shortcutter@googlemail.com] 
# I have added some interesting benchmarking:
# 
# $ ./prefix.rb
#                                     user     system       total        real
# 1000 * list.rx                  0.016000   0.000000    0.016000 (  0.014000)
# 1000 * list.rx with conversion  0.031000   0.000000    0.031000 (  0.030000)
# 1 * large.rx                    0.000000   0.000000    0.000000 (  0.000000)
# 1 * large.rx with conversion    0.000000   0.000000    0.000000 (  0.000000)

Robert, thanks for the benchmark. I included Brian|Martin's solution in the mix but still the regex scheme is way a lot better w regards to speed.

Could some kind soul enlighten me why the regex solution works better, and even best using large strings?

kind regards -botp