Mistake in description of TnI: States that TnI means "the inversion of the transposition" - formula shows it to be the other way around, transposition of the inversion

fixed, but ideally the entire test suite needs an overhaul

JavaScript: Random tests don't work if the input array is modified.

pcSet [ 9 ] operation T1 answer [ 10 ] test says wrong

Random tests don't work if you modify the input array (it's an issue).

[1,2,3] should be [(12-1)+n, (12-2)+n, (12-3)+n] <=> [0,11,10].
it's hilarious. from what we got 0.

T0I - an inversion of T0 - should be [11, 10, 9]. Note that if one asks for the TnI inversion of some set it means the inversion of the transposition n. Consequently, the TnI of [1,2,3] should be [(12-1)+n, (12-2)+n, (12-3)+n] <=> [0,11,10].

so let's take last one [7.4] with T0I
12-7+0 = 5
12-4+0 = 8. so what i'm getting wrong?

pcSet [ 9 ]
operation T1
answer [ 10 ] test says wrong

pcSet [ 7 ]
operation T9I
expected [ 2 ] to deeply equal [ 7 ]
12-7+9 = 14 % 12 = 2 so how we come to 7

pcSet [ 7, 4 ]
operation T0I
unsorted answer [ 5, 8 ]
answer expected [ 4, 7 ]
mind blowing

I agree ^^

Ok... Thanks, easy to solve knowing that indeed ;)
Description should really make it explicit.

It is not a chain of operations -> T11I is not T -> 11 -> I.
T11 -> Transpose by 11
T11I -> Invert by 11

My first impression was also that it was a chain and we would need to parse input like T3I5I11I5, but it is much simpler than that :)

I think Inversion process is not properly described:

[1,2,3], "T11" -> [0,1,2] (ok for me)

So, if inversion(I) subtract each element of the list from twelve., how would:

[1,2,3], "T11I" -> [8,9,10] ?

First:

[1,2,3], "T11" -> [0,1,2]

Then:

[0,1,2] -> "I" -> [(12-0)%12, (12-1)%12, (12-2)%12] -> [0, 11, 10] (sorted: [0,10,11], but no way to get [8,9,10])

Or not?

I would say that the description should still be revised to state that the inversion (if any) occurs before the transposition. This is important, because (12 - n) + m does not equal 12 - (n + m)

Oh no, the context is a good thing.

The revised description is better, and the idea I got from the old one wasn't crazy I see. :]

Done! Thank you!

I hope it is ok like this!