I feel like this kata is more about time complexity than it's about the problem solving, I solved it fairly easy to pass cases with small amount of numbers but can't figure out a solution that doesn't time out for the life of me. I've tried learning some about numpy to try to use vectoring but I'm struggling a lot. Anyone can let me know if I'm on the right track or am I looking in the wrong place. Thank you!

Passing all tests including 100 out of 100 randoms except fixed test number 10 in python. Any way to access the information with the fixed tests so I can debug and see why that one test is failing? or is there something up with that test in particular.

How would not having a loop account for different input?

I'm getting error
Actual: "() - "
Expected: "(123) 456-7890"
but when put into a codespace on github and adding a print statement i get the expected answer returned.

Some explanation of *nb_vowels? its passed to the function with no explanation of what it is.