[leetcode]Integer to Roman
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题目：
Given an integer, convert it to a roman numeral.
Input is guaranteed to be within the range from 1 to 3999.
链接：https://oj.leetcode.com/problems/integer-to-roman/
描述：把整形转化为罗马数字
solution by python:
class Solution: # @return a string def intToRoman(self, num): numDict= {0:'',1:'I',5:'V',10:'X',50:'L',100:'C',500:'D',1000:'M'} x = num; p=1 while x > 0: x /= 10 if x>0: p*=10 ans = '' while p>0: s = numDict[p] n = num/p if n<4: ans += s*n elif n==4: ans += s+numDict[5*p] elif n==5: ans += numDict[5*p] elif n<9: ans += numDict[5*p]+s*(n-5) elif n ==9: ans += s+numDict[10*p] num %= p p /= 10 return ans 0 0
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