I wrote some library to make combination in 2013.
I think that finding combination isn't necessarily written using recursive calling.
so this is my first "working" solution.
it is possible to use some list of words (ex) "a", "b", "c" ) instead of number.
#!/usr/bin/env perl # -*- Mode: cperl; cperl-indent-level:4; tab-width: 8; indent-tabs-mode: nil -*- # Copyright (c) 2013,2020 JEON Myoungjin
use strict; use warnings;…