Given an integer, convert it to a roman numeral.

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

将阿拉伯数字转换为罗马字符

建立一个二维数组来代表转换表 代码如下：

public class Solution {    public String intToRoman(int num) {        String[][] sss={{"I","II","III","IV","V","VI","VII","VIII","IX"},{"X","XX","XXX","XL","L","LX","LXX","LXXX","XC"},{"C","CC","CCC","CD","D","DC","DCC","DCCC","CM"},{"M","MM","MMM"}};		String res="";		String s=String.valueOf(num);		for(int i=s.length()-1;i>=0;i--){			if(s.charAt(i)=='0')continue;			else{				res=sss[s.length()-1-i][s.charAt(i)-'0'-1]+res;			}		}		return res;    }}

Java-Integer to Roman