Nice! Awesome--it's fixed!

Thanks again for the cool Kata!

Works perfectly now! Thanks for the correction! Awesome Kata!

Thanks for the ruby version. Looks like the random test cases are buggy though (one example below).

"Test for: nums = [671059108, 671053106, 671059186, 675059106, 671029106, 71059106, 671059506, 671259106, 631059106]
✘ Expected: "7135052293105868", instead got: nil"

Some arrays are shorter than others and the key is much too long.

Thanks again!

Ruby here. All the random tests expect a 0 result (one such example below). How can this be?

"Random tests
Testing for [35, 22, 4, 619, 9, 995, 9] and 2
✘ It should work for random inputs too - Expected: 0, instead got: 1039 "