12

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

题解

```

class Solution {

    int[] values = {1000,900,500,400,100,90,50,40,10,9,5,4,1};

    String[] Strings = {"M","CM","D","CD","C","XC","L","XL","X","IX","V","IV","I"};

    public String intToRoman(int num) {

        StringBuffer valueBuffer = new StringBuffer();

     for(int i = 0;i<values.length;++i){

         while(num>=values[i]){

             num-=values[i];

             valueBuffer.append(Strings[i]);

         }

         if(num==0) break; 

     }

     return valueBuffer.toString();

    }

}

```