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"
With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
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