Compare Version Numbers
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.
Here is an example of version numbers ordering:
0.1 < 1.1 < 1.2 < 13.37
Credits:
Special thanks to @ts for adding this problem and creating all test cases.
https://leetcode.com/problems/compare-version-numbers/
1 public class Solution 2 { 3 public static int compareVersion(String version1, String version2) 4 { 5 String[]t1=version1.split("\\."); 6 String[]t2=version2.split("\\."); 7 int[]v1=new int[t1.length]; 8 int[]v2=new int[t2.length]; 9 for(int i=0;i<v1.length;i++) 10 v1[i]=Integer.parseInt(t1[i]); 11 for(int i=0;i<v2.length;i++) 12 v2[i]=Integer.parseInt(t2[i]); 13 for(int i=0;i<v1.length&&i<v2.length;i++) 14 { 15 if(v1[i]>v2[i]) 16 return 1; 17 else if(v1[i]<v2[i]) 18 return -1; 19 else 20 ; 21 } 22 if(v1.length>v2.length) 23 { 24 for(int i=v2.length;i<v1.length;i++) 25 if(v1[i]!=0) 26 return 1; 27 return 0; 28 } 29 else if(v1.length<v2.length) 30 { 31 for(int i=v1.length;i<v2.length;i++) 32 if(v2[i]!=0) 33 return -1; 34 return 0; 35 } 36 else 37 return 0; 38 39 } 40 public static void main(String args[]) 41 { 42 String version1="1"; 43 String version2="1.1"; 44 String[] t=version1.split("\\."); 45 System.out.println(compareVersion(version1,version2)); 46 } 47 }