no need for the template string here

beauty

sorry, my fault!

I just used your solution as the official solution to save the headache (with credit to you of course).
Thanks for taking the time to help!

For the reference solution, you can use Number.toExponential if you save it under a different name (security by obscurity, yada yada). That would save you a lot of trouble.

I've done some cleaning up of the description. Fixed some spelling, some grammar, and some markup. Should still look more or less exactly the same. Hope you don't mind.

Needs a fixed test for shorthand(0)==="0". Unless you don't want that.

Everything would seem resolved now. The logic is now definitely easier than what I ended up with earlier.

(The reference solution does a good job of making the problem quite opaque; I can see why you were struggling.)

Note, I made Number.toExponential() unavailable to make this more interesting.

Nice

Resolved

The following number sometimes appear multiple times and cause some flaw :)

Log
0.10010000000000001 [ '1.0010000000000001', '-1' ]
true - Expected: '10^-1', instead got: '1.001*10^-1'

I believe, (though at this point I don't know hehe) that everything is working as it should.
If you get any questionable results, please send them my way. Thank you all for helping!

cool :)