Encode
my %symbols =
1 => "I", 5 => "V", 10 => "X", 50 => "L", 100 => "C",
500 => "D", 1_000 => "M";
my @subtractors =
1_000, 100, 500, 100, 100, 10, 50, 10, 10, 1, 5, 1, 1, 0;
multi sub roman (0) { '' }
multi sub roman (Int $n) {
for @subtractors -> $cut, $minus {
$n >= $cut
and return %symbols{$cut} ~ roman($n - $cut);
$n >= $cut - $minus
and return %symbols{$minus} ~ roman($n + $minus);
}
}
# Sample usage
for 1 .. 2_010 -> $x {
say roman($x);
}
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