leetcode 013

罗马数字转数字

def romanToInt(s):    dic = { 'M':1000 , 'D':500 , 'C':100 , 'L':50 ,'X':10 , 'V':5 , 'I':1}    temp = 4000    num = 0    for i in s:        if temp < dic[i]:            num = num - 2*temp        temp = dic[i]        num = num + dic[i]    print num ##romanToInt('MMMCMXCIX')