Created
May 21, 2021 15:16
-
-
Save olaurendeau/e490a0a333992d0c62420631a1226a22 to your computer and use it in GitHub Desktop.
Decimal to roman
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <?php | |
| function partToRoman($part, $one, $five, $ten) { | |
| $romanPart = ""; | |
| if ($part >= 5) { | |
| $romanPart = $five; | |
| if ($part == 5) { | |
| return; | |
| } | |
| } | |
| if ($part % 5 < 4) { | |
| $romanPart .= str_pad("", $part % 5, $one); | |
| } else { | |
| $romanPart = $part == 4 ? $one.$five : $one.$ten; | |
| } | |
| return $romanPart; | |
| } | |
| $number = $argv[1]; | |
| $roman = ""; | |
| $i = 1; | |
| foreach(array_reverse(str_split($number)) as $part) { | |
| $romanPart = ""; | |
| switch ($i) { | |
| case 1: $romanPart = partToRoman($part, "I", "V", "X"); break; | |
| case 10: $romanPart = partToRoman($part, "X", "L", "C"); break; | |
| case 100: $romanPart = partToRoman($part, "C", "D", "M"); break; | |
| case 1000: $romanPart = partToRoman($part, "M", "?", "?"); break; | |
| } | |
| $roman = $romanPart.$roman; | |
| $i = $i*10; | |
| } | |
| echo "Roman conversion : $number >> $roman\n"; |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment