PetaMem,
Sort the indices but use the values as the test. 
my @idx = sort {$val[$a] <=> $val[$b]} 0 .. $#vals

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Though I question the argument that hashes take up more space as a legitimate reason not to use them?

Cheers - L~R

In reply to Re: Sorting by Array values, obtaining indices by Limbic~Region
in thread Sorting by Array values, obtaining indices by PetaMem

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