leetcode -- Compare Version Numbers ---很基础,可以忽略
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https://leetcode.com/problems/compare-version-numbers/
参考http://bookshadow.com/weblog/2014/12/17/leetcode-compare-version-numbers/
my code
class Solution(object): def compareVersion(self, version1, version2): """ :type version1: str :type version2: str :rtype: int """ v1, v2 = version1.split('.'), version2.split('.') i = 0 z = 1 if len(v1) > len(v2): tmp = ['0'] *(len(v1) - len(v2)) v2 += tmp elif len(v2) > len(v1): tmp = ['0'] *(len(v2) - len(v1)) v1 += tmp while i < len(v1): if int(v1[i]) > int(v2[i]): return 1 elif int(v1[i]) < int(v2[i]): return -1 i += 1 if len(v1) == len(v2): return 0
code2
class Solution: # @param a, a string # @param b, a string # @return a boolean def compareVersion(self, version1, version2): v1Arr = version1.split(".")#split之后每一部分逐个比较,长度不够的用0补齐 v2Arr = version2.split(".") len1 = len(v1Arr) len2 = len(v2Arr) lenMax = max(len1, len2) for x in range(lenMax): v1Token = 0#如果长度不够,用0补齐 if x < len1: v1Token = int(v1Arr[x]) v2Token = 0 if x < len2: v2Token = int(v2Arr[x]) if v1Token < v2Token: return -1 if v1Token > v2Token: return 1 return 0
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