[btdmaster]

Except that sorts the list in reverse: https://tio.run/##Vc6xDsIwDATQPV9xYyJ5od2Qyo9UGYhIwFXkVlY68P...

(Also a subtle off-by-one error, it should be 0 to |n|-1 and i to |n|-1.)

[cdelsolar]

Thanks for catching the reverse. I was aware of the off by one but thought the “to” operator I invented would be exclusive of the second operand (kinda like range in Python) :)