I don't understand why you're doing n/2 (the +1 it's obvious and I understand it, OC)... Somebody explain, please.

very nice

Really?) That's interesting) I felt this intuitively but could not come up with a formula off the top of my head

(you can cut even more)

I didn't think at first that the loop range can be cut in half.

That's really cool and for sure the best practice!

Awesome solution, definetly easier to understand than the others

Cant say for sure what is causing the issue unless you post more details or the exact code you using.

I kept getting a type error, saying the interpreter couldn't concatenate 2 types together. And I designated the str() around the index call.

It's been a while since I did this one, but I'm pretty sure I wanted the subtraction done first, not the multiplication.

The Ultimate Solution

Tank you Suic! Makes sense now

Would someone please explain how this works?

You solution is so crazy and I like it.