#!/usr/bin/perl -w
use strict;

my $i = 1;
my %list;

open TEST, 'test.txt' || die "Couldn't open it";
print "\nFile Opened\n\n\n";
while(<TEST>){
    chomp;
    my ($f, $l) = split(' ', $_, 2);     
    print "$i : $l\,$f\n";
    $list{$i} = [$f,$l];
    $i += 1;
}

foreach my $c (sort keys %list) {
    print "$list{$c}->[1],$list{$c}->[0]$/";
}

close TEST;
print "\n\n\nFile Closed\n";