【逃兵】【python】罗马数字转阿拉伯数字

逃兵

1. def romanToInt(s):
   
2.     f = 0
   
3.     number_dict={'I':1,'V':5,'X':10,'L':50,'C':100,'D':500,'M':1000}
   
4.     temp = s
   
5.     lst = [number_dict[i] for i in temp]+[0]
   
6.     for i in range(len(lst)-1):
   
7.         if lst[i] < lst[i+1]:
   
8.             f-=lst[i]
   
9.         else:
   
10.             f+=lst[i]
    
11. 
    
12.     return f
    

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