Comparing the size of multiple numerical values

[Davider]

Hi,
I encountered a challenge 
In the code below, the values of each string variable are numbers separated by .    I want to obtain the maximum and minimum values, Is there a simple solution?

Thanks in advance for any suggestions and help
david



Macro Macro2

Code:

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str s1("23.05.17.21") s2("23.05.17.24") s3("23.06.17.24") s4("23.06.18.20")

;out Max 23.06.18.20

;out Min 23.05.17.21