blob: f1b874189f8d64f25098ea6d583585127b85d864 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
#!/usr/bin/env perl
use strict;
use warnings;
use experimental qw{ say postderef signatures state };
use List::Util qw{ sum0 };
my @examples = (
[ 1, 2, 3, 4 ],
[ 2, 7, 1, 19, 18, 3 ],
);
for my $example (@examples) {
my $input = join ', ', $example->@*;
my $output = special_numbers( $example->@* );
say <<~"END";
Input: \$ints = ($input)
Output: $output
END
}
sub special_numbers (@input) {
my $output = 0;
my $n = scalar @input;
return
sum0
map { $input[ $_ - 1 ] ** 2 }
grep { $n % $_ == 0 }
1 .. scalar @input;
## the longer form I wrote first
# for my $i ( 1 .. scalar @input ) {
# if ( $n % $i == 0 ) {
# my $v = $input[ $i - 1 ];
# $output += ( $v**2 );
# }
# }
# return $output;
}
|
