you want to sort by key of hashB?? 
#!usr/bin/perl -W

use strict;# forces predeclaration of variables
use diagnostics;#diagnostic tools

my %hashA = ( 'accord newton second' => 80,    
              'acceler smaller greater' => 78,
        'addit law motion' => 56,
        'meant bodi act forc'=> 55,
);

my %hashB = (2 => 'addit law motion',
        3 => 'accord newton second',
        4 => 'meant bodi act forc',
        5 => 'acceler smaller greater',
);

my %hashC = (2 => "In addition to ",
    3 => "According to Newton",
    4 => "It also meant that whenever ",
    5 => "The acceleration is",
);


# this is not a sorted array!!!
my @sorted_scores =  keys %hashA;#keys from hash A

# still not sorted
my @sorted_words = map { $hashA{$_} } @sorted_scores;#sorted text

my (@line_Numbers);

# this sorts the key numerically
@line_Numbers = sort {$a <=> $b} keys %hashB;

# and prints your desired output
foreach (@line_Numbers){    
    print ($_,' ', $hashC{$_}, "\n");
}

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In reply to Re: Retaining Insertion order throughout when using “map” by lima1
in thread Retaining Insertion order throughout when using “map” by Gavin

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