LeetCode 13 罗马数字转整数

Posted 2021-12-14 Starzkg

https://leetcode-cn.com/problems/roman-to-integer/

解决方案

class Solution 
    int[] values = 1000, 900, 500, 400, 100, 90, 50, 40, 10, 9, 5, 4, 1;
    String[] symbols = "M", "CM", "D", "CD", "C", "XC", "L", "XL", "X", "IX", "V", "IV", "I";

    public int romanToInt(String s) 
        int num = 0;
        for (int i = 0; i < values.length && s.length() > 0; i++) 
            while (s.startsWith(symbols[i])) 
                num += values[i];
                s = s.substring(symbols[i].length());
            
        
        return num;