In fairness, I should add that my original version is the slowest, by a fair margin (and gets much worse as the string gets longer). Adding `gapify' in danger's benchmark yields (with Perl 5.005_03): 

Benchmark: running danger, gapify, japhy, each for at least 2 CPU seco
+nds...
    danger:  3 wallclock secs ( 2.00 usr +  0.00 sys =  2.00 CPU) @ 66
+271.00/s (n=132542)
    gapify:  2 wallclock secs ( 2.37 usr +  0.00 sys =  2.37 CPU) @ 41
+536.06/s (n=98302)
     japhy:  2 wallclock secs ( 2.55 usr +  0.00 sys =  2.55 CPU) @ 55
+071.76/s (n=140433)
Benchmark: running danger, gapify, japhy, each for at least 2 CPU seco
+nds...
    danger:  3 wallclock secs ( 1.98 usr +  0.02 sys =  2.00 CPU) @ 31
+026.00/s (n=62052)
    gapify:  2 wallclock secs ( 2.07 usr +  0.00 sys =  2.07 CPU) @ 14
+864.03/s (n=30719)
     japhy:  2 wallclock secs ( 2.00 usr +  0.00 sys =  2.00 CPU) @ 23
+104.50/s (n=46209)
Benchmark: running danger, gapify, japhy, each for at least 2 CPU seco
+nds...
    danger:  2 wallclock secs ( 2.00 usr +  0.00 sys =  2.00 CPU) @ 19
+81.00/s (n=3962)
    gapify:  2 wallclock secs ( 2.03 usr +  0.00 sys =  2.03 CPU) @ 18
+7.87/s (n=382)
     japhy:  2 wallclock secs ( 2.08 usr +  0.00 sys =  2.08 CPU) @ 12
+27.84/s (n=2558)

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In reply to Re: Re: Re: Re: Adding gaps to a sequence by ariels
in thread Adding gaps to a sequence by ariels

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