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#!/usr/bin/env perl
use strict;
use warnings;
use experimental qw{ say state postderef signatures };
my @examples = (
[ 6, 5, 4, 8 ],
[ 7, 7, 7, 7 ],
[ 5, 4, 3, 2, 1 ],
[ -1, 0, 3, -2, 1 ],
[ 0, 1, 1, 2, 0 ],
);
for my $in (@examples) {
my @input = $in->@*;
my $input = join ', ', @input;
my @output = smaller_than_current(@input);
my $output = join ', ', @output;
say <<"END";
Input: \@num1 = ($input)
Output: $output
END
}
sub smaller_than_current (@num1) {
my @num2;
for my $i ( 0 .. $#num1 ) {
my $n = $num1[$i];
my @copy = @num1;
delete $copy[$i];
@copy = grep { defined } @copy;
push @num2, scalar grep { $n >= $_ } @copy;
}
return @num2;
}
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