Dear Monks,

consider a given, very numeric, hash: 

my %hash = ( 0 => 3,
             1 => 7,
             2 => 5,
             3 => 0,
             4 => 2,
           );

[download]
Now - no problem to sort this hash by values and obtain a list containing the new ordering of the keys (in the example above, that'd be: 3,4,0,2,1 if ascending sort)

Now such a hash is pretty trivial and also space consuming. I'd like to have the values of the hash in some array, because there are only numerical indices, no index spaces etc. So given an array: 

my @vals = qw(3 7 5 0 2);

[download]
how do I get from this the array @idx = qw(3,4,0,2,1)? I'd like to avoid to go via a hash. Thanks for any enlightment.

Bye
 PetaMem     All Perl:   MT, NLP, NLU

In reply to Sorting by Array values, obtaining indices by PetaMem

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