You could use zip from List::MoreUtils to mesh the arrays into a hash, then sort the keys by the values:
use strict; use warnings; use feature 'say';
use Data::Dumper;
use List::MoreUtils 'zip';
my @x = qw/d b c e a f/;
my @y = qw/4 6 5 2 9 1/;
my %h = zip @x, @y;
my @z = ( sort { $h{ $b } <=> $h{ $a } } keys %h )[0..3];
say Dumper \@z;
__END__
Output:
$VAR1 = [
'a',
'b',
'c',
'd'
];
Hope this helps!
The way forward always starts with a minimal test.
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