Added Three Solutions in python

[sumanth-botlagunta]

@anishLearnsToCode I have added solutions to the following questions in python:

• 208: implement Trie (Prefix Tree)
• 2348: Number of Zero-Filled Subarrays
• 218: The Skyline Problem

[anishLearnsToCode]

Thanks a lot for the 3 solutions !! I have tested them and they are all passing. Just one thing before I merge them. Can you also add the link to the correspondibg leetcode problem on each of the 3 solutions !

like:

// https://leetcode.com/problems/two-sum/
// T: O(N)
// S: O(N)

your code here

and also please add the time + space complexity for each of the 3 problems that you have solved.

Thanks again for your contributions 😸

[sumanth-botlagunta]

@anishLearnsToCode
I have added the link to the corresponding leetCode problem on each of the solutions and also added the time + space complexity
added Links + Time & Space Complexity

[anishLearnsToCode]

Thank you very much ! 🥳

[anishLearnsToCode]

I have merged your pull request and i would highly appreciate any more contributions from you as well, I would just like to say one thing that in the future create 1 pr per problem, so if you have solved 3 problems then create 3 prs for each solution.

Also for every pr, you can keep the title as:

solves {problem name} (#1234 --> leetcode number) in python