Nice kata!

Shouldn't be any issue with modifying the given parameter as we are told that we "can assume that all inputs are valid integers".

From MDN:
"Parameters are essentially passed to functions by value — so if the code within the body of a function assigns a completely new value to a parameter that was passed to the function, the change is not reflected globally or in the code which called that function.

When you pass an object as a parameter, if the function changes the object's properties, that change is visible outside the function."

It's a too simple cipher (20 secs spent) :p

Approved

Done in latest fork of yours

Python: random tests never generate invalid cases.

python new test framework is required. updated in this fork

Agree that this shouldn't be considered best practice. Clean code tho.

Omg, im so dumb...

good one

JS: Node v12 should be used along with the appropriate assertion tools (Mocha + Chai)

Yeah! Simple and efficient method! Nice work champ!

JS is like Ruby.

fun kata dude!

fixed