My Optimized and Unoptimized solutions for common algorithm questions

Answers here are not perfect, some of them are not optimized, because I couldn't care less to try again

I am just collecting them together, so I don't lose them and have this messy

I use multiple languages, so yeah:

1. rust (the one I have been using recently, to better understand how everything unfolds)
2. go (I just like the language)
3. typescript (Idk) [TODO: Find them]
4. elixir (For pure functional programming, and practice to use it in the future)
5. swift (I used to mainly use this) [TODO: Find them]
6. python (I think I lost this one, lol :) )