Functional and lazy.

feel free to make a Supermarket Queue Part II Kata ;)

thanks. passed

Your code is printing the result instead of returning it.

sumOfDifferences([1, 2, 10] Log 9
Expected: 9, instead got: undefined
sumOfDifferences([-3, -2, -1]) Log 2
Expected: 2, instead got: undefined

Shouldn't be anyone with more than 5 items go to an regular checkout? 😂

Thanks

it's best to mention the language you're using, but this is clearly about javascript, so here you go: the js spread syntax

Somebody can explain me please this option I don't know what is ...arr) ? How does it work?

No problem.

I'm not an native english spreaker.
Now the description and the example is less ambiguous. Thanks!

Changed the example in the kata description. Is that good enough?

I thought that the array hast to be indexed in descending order.

Normally that's called reversed, not sorted in descending order.

The expected output for the sample tests and the final tests is in the same format.

The sample tests for JavaScript require the result being submitted as an HashMap, but the hidden tests require this quirky "(A : 600) - (B : 42)" format.

Please fix!