[Maths]: Added ThreeDivisors problem.

[Akshit6828]

Pull Request Template

Added ThreeDivisors leetcode problem number 1952.

Note: The problem is based on a property of prime numbers.

Algo Facts:

• Check if the number is a square of a prime number and square of prime numbers ONLY have 3 divisors.
• Read the code submitted for a better understanding of the Algorithm.

Put check marks:

Have you made changes in README file ?

• Added problem & solution under correct topic.
• Specified Space & Time complexity.
• Specified difficulty level, tag & Note(if any).

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Please also note any relevant details for your test configuration.

• Test A
• Test B

Make sure all below guidelines are followed else PR will get Reject:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code so that it is easy to understand
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules

[welcome]

I can tell this is your first pull request! Thank you I'm so honored. 🎉🎉🎉 I'll take a look at it ASAP!

[welcome]

Your code looks great! Congrats, I've gone ahead and merged your first pull request! Keep it up!