@@ -29,46 +29,43 @@ Roman numerals are usually written largest to smallest from left to right. Howev
2929
3030### Solution
3131``` PHP
32- class Solution {
33- function romanToInt($s) {
3432class Solution {
3533
3634/**
3735 * @param String $s
3836 * @return Integer
3937 */
4038function romanToInt($s) {
41- $romanTable = [
42- 'I' => 1,
43- 'IV' => 4,
44- 'V' => 5,
45- 'IX' => 9,
46- 'X' => 10,
47- 'XL' => 40,
48- 'L' => 50,
49- 'XC' => 90,
50- 'C' => 100,
51- 'CD' => 400,
52- 'D' => 500,
53- 'CM' => 900,
54- 'M' => 1000,
55- ];
39+ $romanTable = [
40+ 'I' => 1,
41+ 'IV' => 4,
42+ 'V' => 5,
43+ 'IX' => 9,
44+ 'X' => 10,
45+ 'XL' => 40,
46+ 'L' => 50,
47+ 'XC' => 90,
48+ 'C' => 100,
49+ 'CD' => 400,
50+ 'D' => 500,
51+ 'CM' => 900,
52+ 'M' => 1000,
53+ ];
5654
57- $s = strrev($s);
58- $number = $romanTable[$s[0]];
55+ $s = strrev($s);
56+ $number = $romanTable[$s[0]];
5957
60- $length = strlen($s);
58+ $length = strlen($s);
6159
62- for($i=1; $i<=$length; $i++) {
63- if($romanTable[$s[$i]] < $romanTable[$s[$i-1]]) {
64- $number -= $romanTable[$s[$i]];
65- }else{
66- $number += $romanTable[$s[$i]];
67- }
68- }
60+ for($i=1; $i<=$length; $i++) {
61+ if($romanTable[$s[$i]] < $romanTable[$s[$i-1]]) {
62+ $number -= $romanTable[$s[$i]];
63+ }else{
64+ $number += $romanTable[$s[$i]];
65+ }
66+ }
6967
70- return $number;
71- }
68+ return $number;
7269 }
7370}
7471```
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