Comparing two version numbers

Question

How can I compare two Version number strings?

For example: 3.1.1 and 3.1.2.5.4

Now I need to find out if 3.1.2.5.4 is higher than 3.1.1 but I don't know how to do this. Can anybody help me?

Thanks in advance!

Answer 1

Sample Code :

NSString* v1 = @"3.1.1";
NSString* v2 = @"3.1.2.5.4";

if ([v1 compare:v2 options:NSNumericSearch] == NSOrderedDescending) {
    NSLog(@"%@ is greater than %@",v1,v2);
}

From the Apple Documentation for Comparing and sorting strings.