Re: How can one generate all possible permutations of r elements out of n where r<n?


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Re: How can one generate all possible permutations of r elements out of n where r<n?

by BrowserUk (Patriarch)

on Feb 26, 2013 at 12:29 UTC ( [id://1020679]=note: print w/replies, xml )

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in reply to How can one generate all possible permutations of r elements out of n where r<n?

C:\test>perl -MAlgorithm::Combinatorics=variations -E"$i=variations( [
+'A'..'D'], 3 ); say @$_ while $_= $i->next"
ABC
ABD
ACB
ACD
ADB
ADC
BAC
BAD
BCA
BCD
BDA
BDC
CAB
CAD
CBA
CBD
CDA
CDB
DAB
DAC
DBA
DBC
DCA
DCB
[download]

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Comment on Re: How can one generate all possible permutations of r elements out of n where r<n? Download Code

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Re^2: How can one generate all possible permutations of r elements out of n where r<n? by supriyoch_2008 (Monk) on Feb 27, 2013 at 09:11 UTC
Hi BrowserUK, Thank you very much for the code. But I am sorry that I do not understand the code as it does not start with #!/usr/bin/perl, the code I am a little acquainted with. With regards.	[reply]
Re^3: How can one generate all possible permutations of r elements out of n where r<n? by marto (Cardinal) on Feb 27, 2013 at 09:21 UTC
perlintro, perlrun, http://learn.perl.org. Update: you claim this code solved your problem, yet it didn't include `#!/usr/bin/perl`	[reply] [d/l]

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