reversed(arr) actually returns an iterator, list(reversed(arr)) would create a list copy. Anyway, I think arr.reverse() is the fastest way to reverse a list https://stackoverflow.com/a/40294928/6260170

Micromind got it. arr.reverse does an in-place reverse while reversed(arr) creates a copy that it returns without modifying the original.

I was talking about Python version. :)

Python test case has been fixed.

Invalid test cases for python.

Haskell translation kumited.

Which version? I just tested the JS version and it works fine.

Problem in predefined test cases:

test.assert_euqals(func(args), expected_result)

but got test.assert_equals(func(args) == expected_result)

I have removed them, but I forgotted to mark this suggestion as resolved, so....:-)

You can find all my katas by searching for curious_db97 on kata page OR by opening my profile and seeing my authored katas....:-)

I'd like to complet this series of katas, but I could not find the number 5. I tried to type the URL directly but got a 404 error. Anyone know where the #5 kata is? Thx.

I agree. The kata itself does not tell, but the random tests do.