【LeetCode】12. Integer to Roman

Given an integer, convert it to a roman numeral.

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

题意：把数字转换为罗马数字

感觉用c的话太麻烦了，所以用Python写了

class Solution(object):
    def intToRoman(self, num):
        """
        :type num: int
        :rtype: str
        """
        flag=[['','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']]
        
        i = 0
        s = ''
        
        while num>0:
            t = num%10
            s = flag[i][t]+s
            i+=1
            num=num//10
            
        return s