本文共 649 字，大约阅读时间需要 2 分钟。

Integer to Roman

Given an integer, convert it to a roman numeral.

Input is guaranteed to be within the range from 1 to 3999.

Java代码：

public class Solution {    public String intToRoman(int num) {        String[] str = new String[] { "M", "CM", "D", "CD", "C", "XC", "L", "XL", "X", "IX", "V", "IV", "I" };        int[] val = new int[] { 1000, 900, 500, 400, 100, 90, 50, 40, 10, 9, 5, 4, 1 };         StringBuilder sb = new StringBuilder();        for (int i = 0; num > 0; i++) {                         while (num >= val[i]) {                num -= val[i];                sb.append(str[i]);            }         }        return sb.toString();    }}

转载地址：http://bnuni.baihongyu.com/