• There is a compilaiton warning:

/workspace/Solution.fs(15,3): warning FS0058: Possible incorrect indentation: this token is offside of context started at position (6:3). Try indenting this token further or using standard formatting conventions. [/workspace/run.fsproj]

• What is the open Microsoft.FSharp.Collections needed for?
• Why do you need str.ToString() instead of just str?
• what's the deal with all the if x = true then... ? Why not just if x then ...?
• Random tests do nto generate inputs with punctuation.

Needs proper random testing, randomised order of fixed inputs is insufficient.

I added a method return type annotation.

The translation should be ready now... I hope.

I made the sure the setup solution section does not causes compiler issues, I did this by just returning the argument because that's a string.

Does that work?

I just updated the solution again to remove all the .[] array indexing and just used [] for F# 6.

Okay, I will remove the f# section and the tests realted to that. I will leave the working solution the same though because it's complete.

I don't think that the scenarion is so important as to update all the rest of the languages.