Find The Possible Number of BST from Key.

[MadyDixit]

Hey! Can we Add Function That Calculate the Number of Possible BST from Given Keys.

Function : noBST(n Key Value)
Return : x : Integer That is the number of total Possible Binary Search Tree.

Is it Interesting!?

[cclauss]

If it has doctests, type hints, black formatting (https://github.com/TheAlgorithms/Python/blob/master/CONTRIBUTING.md) then it would be good to review.

[MadyDixit]

Thank you!! Hope It will Helpful in Future!

[cclauss]

Try python3 -m doctest -v your_version.py and python3 -m doctest -v the_merged_version.py to see the doctests in action.