Conditions | 4 |
Paths | 4 |
Total Lines | 16 |
Code Lines | 10 |
Lines | 0 |
Ratio | 0 % |
Changes | 1 | ||
Bugs | 0 | Features | 0 |
1 | <?php |
||
9 | public static function romanToInt(string $s): int |
||
10 | { |
||
11 | [$res, $len] = [0, strlen($s)]; |
||
12 | if ($len === 0) { |
||
13 | return $res; |
||
14 | } |
||
15 | $map = ['I' => 1, 'V' => 5, 'X' => 10, 'L' => 50, 'C' => 100, 'D' => 500, 'M' => 1000]; |
||
16 | for ($i = 0, $j = 1; $j < $len; $i++, $j++) { |
||
17 | if ($map[$s[$i]] >= $map[$s[$j]]) { |
||
18 | $res += $map[$s[$i]]; |
||
19 | } else { |
||
20 | $res -= $map[$s[$i]]; |
||
21 | } |
||
22 | } |
||
23 | |||
24 | return $res + $map[$s[$i]]; |
||
25 | } |
||
46 |