The following gives you a sorted list, so it should be easy to check against a sorted dictionary (by doing something like a merge sort). It's also memory efficient since it doesn't keep a list of all the permutations in memory.

use Algorithm::Loops qw( NextPermute );

my $word = 'tool';

my @list = sort ' ', $word =~ /(.)/g;
my $last_word = '';
while (NextPermute(@list)) {
   my $new_word = join('', @list);
   $new_word =~ s/ .*//;
   next if ($new_word eq $last_word);
   $last_word = $new_word;
   print($new_word, $/);
}

[download]

Output:

l
lo
loo
loot
lot
loto
lt
lto
ltoo
o
ol
olo
olot
olt
olto
oo
ool
oolt
oot
ootl
ot
otl
otlo
oto
otol
t
tl
tlo
tloo
to
tol
tolo
too
tool

[download]

In reply to Re: (un)jumbler... by ikegami
in thread (un)jumbler... by stevenrh

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