题目原文:
Compare two version numbers version1 and version2.
If version1 > version2 return 1, if version1 < version2 return -1, otherwise return 0.
You may assume that the version strings are non-empty and contain only digits and the . character.
The . character does not represent a decimal point and is used to separate number sequences.
For instance, 2.5 is not “two and a half” or “half way to version three”, it is the fifth second-level revision of the second first-level revision.
题目大意:
比较两个软件的版本号version1和version2.如果version1>version2则返回1,version1
版本号比较算法
本文介绍了一种用于比较两个软件版本号大小的算法。通过解析版本号字符串中的数字序列,能够准确判断出version1与version2之间的大小关系,返回值为1、-1或0。

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