Re^3: Determining uniqueness in a string.

Thanks for the benchmark numbers... I plugged each into my program and the speed improvement was pretty impressive. Now I will spend a while understanding what those code fragments do. :)

Comment on Re^3: Determining uniqueness in a string.

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Re^4: Determining uniqueness in a string. by thundergnat (Deacon) on Oct 01, 2005 at 02:01 UTC
Actually, the print statement is probably much more expensive than any of those comparisons. Anyway, I noodled with the script a bit. `#!/usr/bin/perl use warnings; use strict; while ( <> ) { chomp; (/^\d{10}$/) ? print uniq($_)+0,"\n" : die "Not 10 digits.\n"; } sub uniq { return $_[0] !~ /(.).*\1/ }` [download]	[reply] [d/l]
Re^4: Determining uniqueness in a string. by Yzzyx (Beadle) on Oct 01, 2005 at 02:37 UTC
Oops, I wasn't logged in... :) The total running time for my program has dropped from 77m18s to 24m14s. I will of course keep working on it. Thanks for the help!	[reply]