题解 | #比较版本号#

#
# 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可
#
# 比较版本号
# @param version1 string字符串 
# @param version2 string字符串 
# @return int整型
#
class Solution:
    def compare(self , version1: str, version2: str) -> int:
        # write code here
        list1 = version1.split('.')
        list2 = version2.split('.')
        length1 = len(list1)
        length2 = len(list2)
        n = length1 - length2
        if n < 0:
            for _ in range(n):
                list1.append('0')
        elif n > 0:
            for _ in range(n):
                list2.append('0')
        i = 0 
        while i < len(list1):   
            if int(list1[i]) > int(list2[i]): 
                return 1
            elif int(list1[i]) < int(list2[i]):
                return -1
            else:
                i += 1
        return 0