use Data::Dump 'pp';
my @dirs = qw(
tmp/a tmp/a/b tmp/a/b/c tmp/a/b/c/e tmp/a/b/d tmp/a/b/d/g
tmp/a/b/d/g/h tmp/a/b/d/g/i tmp/a/b/k
);
my %empty;
for (@dirs) {
$empty{$_} = 1; # assume empty
s!/[^/]+$!!; # find parent
delete $empty{$_}; # and remove it
}
pp keys %empty;
__END__
("tmp/a/b/k", "tmp/a/b/d/g/h", "tmp/a/b/c/e", "tmp/a/b/d/g/i")
Unless I state otherwise, all my code runs with strict and warnings
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