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Solution.java
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43 lines (38 loc) · 1.53 KB
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public class Solution {
public int compareVersion(String version1, String version2) {
String[] version1Parts = version1.split("\\.");
String[] version2Parts = version2.split("\\.");
int indexOfVersion1Parts = 0;
int indexOfVersion2Parts = 0;
while (indexOfVersion1Parts < version1Parts.length
&& indexOfVersion2Parts < version2Parts.length) {
int subVersion1 = Integer.valueOf(version1Parts[indexOfVersion1Parts]);
int subVersion2 = Integer.valueOf(version2Parts[indexOfVersion2Parts]);
if (subVersion1 < subVersion2) {
return -1;
} else if (subVersion1 > subVersion2) {
return 1;
} else {
indexOfVersion1Parts++;
indexOfVersion2Parts++;
}
}
if (indexOfVersion1Parts == version1Parts.length) {
if (indexOfVersion2Parts == version2Parts.length)
return 0;
else {
while (indexOfVersion2Parts < version2Parts.length) {
if (Integer.valueOf(version2Parts[indexOfVersion2Parts++]) != 0)
return -1;
}
return 0;
}
} else {
while (indexOfVersion1Parts < version1Parts.length) {
if (Integer.valueOf(version1Parts[indexOfVersion1Parts++]) != 0)
return 1;
}
return 0;
}
}
}