I'm not sure if this is homework, but you certainly won't get that code to work.
#!/usr/bin/perl
use warnings;
use strict;
my %colorhash = ( CCgray => ["0","0","0"],
CCwhite => ["1","0","0"],
CCgrey => ["0","2","0"],
CCBlue => ["0","0","3"]);
foreach my $colorname (keys %colorhash) {
for my $i (0.. $#{ $colorhash{$colorname} } ) {
print "$i = $colorhash{$colorname}[$i] ";
}
print "\n";
}
my @light2dark = sort numsort (keys %colorhash);
sub numsort {
$colorhash{$a}[0] <=> $colorhash{$b}[0]
or $colorhash{$a}[1] <=> $colorhash{$b}[1]
or $colorhash{$a}[2] <=> $colorhash{$b}[2]
}
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