Create an array where each element represents a row as an array of fields.
my @lines;
while (<>) {
chomp;
push @lines, [ $_, split /\t/ ];
}
@lines = sort { $a->[9] <=> $b->[9] } @lines;
for (@lines) {
print "$_->[0]\n";
}
It can be written more tersely as:
print map "$_->[0]\n",
sort { $a->[9] <=> $b->[9] }
map [ $_, split /\t/ ],
map { chomp( my $s = $_; ); $s }
<>;
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