Hi, I see you're new. Mark your post as having spoiler content next time, please.

@mmangiamusardo please mark your post as having spoiler content next time.

Have you somehow, messed up the sample tests? Backup your code, click reset, paste it and try again.

It's an object (in Python, this kind of object is called a dictionary, yes), and it says if the string is empty, return an empty object literal. Strings have quotes around them. Always check the sample tests when in doubt.

I copied and pasted your code and it worked.

IMHO, not worth it, using ORDER BY 6, even if it returns the same right now, it's a lot more prone to errors, and not a good practice. Why? Read this.

Could you provide an example at least? Did you read that once reversed they should be a different number? So 11 is not a valid result, neither 2, 3, 5 nor 7. If you're sure there is the problem with the tests, provide your code and the language you're working on, the problem may exist only in that one.

You just chose to post under a solution that has no c at all, but seeing other solutions, it's a short form of character or char.

It mentions 3 different input values in the description and it shows 3 arguments in the initial code, could you clarify what do you mean?

The expected value for that test is this one: 1:ooo/1:uuu/2:sss/=:nnn/1:ii/2:aa/2:dd/2:ee/=:gg"

Please when reporting an issue, provide the code that gets that error. About what you said, change Node version to another one, and you'll see you're returning a function instead of a string in that test. I agree the error message in Node v18 is confusing, but I don't know why it shows that, so I'll leave the issue open just in case anyone else knows how to fix that.

2 and 3 go to different tills. Read the description again.

No, you're wrong, you can see my solution works with a different formula.

Check the issue above.