NAME

       Data::Password::zxcvbn::Combinatorics - some combinatorial functions

VERSION

       version 1.1.2

DESCRIPTION

       This module provides a few combinatorial functions that are used throughout the library.

FUNCTIONS

   "nCk"
         my $combinations = nCk($available,$taken);

       Returns the binomial coefficient:

        / $available \
        |            |
        \   $taken   /

   "enumerate_substitution_maps"
        my $enumeration = enumerate_substitution_maps(\%substitutions);

       Given a hashref of arrayrefs, interprets it as a map of substitutions. Returns an arrayref of hashrefs,
       containing all reverse-substitutions.

       For example, given:

        {'a' => ['@', '4']}

       ("'a' can be replaced with either '@' or '4'")

       it returns:

         [{'@' => 'a'}, {'4' => 'a'}] ],

       ("in one case, '@' could have been substituted for 'a'; in the other, '4' could have been substituted for
       'a'")

   "factorial"
         my $fact = factorial($number);

       Returns the factorial of the given number.

AUTHOR

       Gianni Ceccarelli <gianni.ceccarelli@broadbean.com>

COPYRIGHT AND LICENSE

       This software is copyright (c) 2022 by BroadBean UK, a CareerBuilder Company.

       This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5
       programming language system itself.