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#!/usr/bin/env perl
use strict;
use warnings;
use experimental qw{ say postderef signatures state };
use List::Util qw{ any };
my @examples = (
{ ints => [ 5, 3, 6, 1, 12 ], start => 3 },
{ ints => [ 1, 2, 4, 3 ], start => 1 },
{ ints => [ 5, 6, 7 ], start => 2 },
);
for my $example (@examples) {
my $start = $example->{start};
my @ints = $example->{ints}->@*;
my $output = multiply_by_two( $start, @ints );
my $ints = join ',', @ints;
say <<"END";
Input: \@word = ($ints) and \$start = $start
Output: $output
END
}
sub multiply_by_two ( $start, @ints ) {
while ( any { $start == $_ } @ints ) {
$start *= 2;
}
return $start;
}
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