In PHP, assuming the kata aims for strict comparison, it needs to add a fixed test like:

function a(){};
$a = ["a", 1, false];
$b = [0, true, a(), "b"];

That would invalidate some solutions (mine included x_x) that uses built-in functions with non-strict comparison.

CoffeeScript translation

Python and Ruby: the number of tests is so small some inputs may not be generated at all.

Sorry but such an example has been attached before - try to add some extra options.

@donaldsebleung

Please, your anti-cheat is a black box that nobody knows how it works.

Dont work correctly in Java

Too simple even for an 8 kyu. I would add some edge cases like negative prices for example.

static keyword is missing in the method declaration and you are giving the answer to the people.

JavaScript version needs random test cases

C#: The solution is already provided.

Needs random test cases

Needs random test cases

Javascript version of Kata is seriously lacking in both fixed and random tests.