I am not sure what you mean by sort it. It is not possible to sort a hash in same sense as sorting an array. You can process the contents of the hash in any order. Refer: perldoc -q "sort a hash".

Also be warned that sorting names can be quite tricky. The following example should get you started. Note use of "Schwartzian Transformation" also described in perfaq4 under: perdoc -q "sort an array"

use strict;
use warnings;
use Data::Dumper;
my %books=(
    '34' => ['enlgish', 'dani M. rod', 54],
    '24' => ['spanish', 'ramk rovale', 41],
    '54' => ['enlgish', 'bob falicas', 17],
);

my @sorted_list = 
    map {$books{$_->[0]}}
    sort {lc $a->[1] cmp lc $b->[1]}
    map {[$_,$books{$_}[1] =~ /\b(\w+)$/]}
    keys %books
    ;

print Dumper \@sorted_list;

[download]
Update: Removed incorrect check of first names.

In reply to Re: sorting hash by a certain value (that it is in an array) by BillKSmith
in thread sorting hash by a certain value (that it is in an array) by gooyava

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