Optimized encrypt.py python script

[AOrps]

Purpose

• Optimize Script to run faster

Details

• I noticed that this code ran at O(n) just fine but was instead running at O(n^2) because it was trying to convert a multi-dimensional array into a string. So I just eliminated some abstractions of the script, that might prove costly to large test cases

Technical Details

fence = ["" for i in range(n) ]

• Instead of doing a list comprehension on a list in python (which creates a multi-dimensional list), you can do one with a string. Which then allows for one iteration the list as opposed to 2.

return "".join(fence)

• This is used to join all the strings of the list together as one string.

[CLAassistant]

All committers have signed the CLA.

[AOrps]

I haven't the slightest idea of why the checks aren't passing but let me know what to fix so I can update it accordingly whenever the maintainer of this repository gets the chance!