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# Compare Version Numbers

Problem Description

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.

Note: Here is an example of version numbers ordering:
0.1 < 1.1 < 1.2 < 1.13 < 1.13.4

Problem Constraints
1 <= |A|, |B| <= 5000

Input Format
The first argument is a string A representing version1.
The first argument is a string B representing version2.

Output Format
Return an integer.

Example Input

A = "1.13"

B = "1.13.4"

Example Output
-1

Example Explanation
Version1 = "1.13"
Version2 = "1.13.4"
Version1 < version2, hence return -1

NOTE: You only need to implement the given function. Do not read input, instead use the arguments to the function. Do not print the output, instead return values as specified. Still have a question? Checkout Sample Codes for more details.
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