similar to mine. only suggestion is to dynamically generate the alphabets map.

this is the fastest solution

...

I used an array too, and I agree that this looks better. No idea why I didn't think about it :(

check mine how do you think of this

nice

well done

best practice! big up!

Nice job, I'm learning from my mistakes by reading your solution.

Most readable

Just spent 3 days on this problem and haven't got a solution until now. This is good but heart breaking at some point...

Best Practice but adding a comment would have sent the solution to Mars!