I have tried to solve that issue by using 'toSpliced method' which allows to create an copy instead of only 'splice method' (https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/toSpliced).
But the compiler keeps telling me it isn't a function(??).

I have passed 100 tests but the 101 st test always fails. I have thougt the issue was my code for checking if p0 is greater or equal but after change to check only greatet the result is same, 100 passed and 1 fail. Is there a way to solve it without access to tests?

Um what the error means that the returned '0' has been expected to equal '+0' like with infinity limit near + or - 0 ?