in the following test cases:

scramble_words('-dcba') == '-dbca'
as first char is "-" and last "a", shouldn't return value be "-bcda"?

scramble_words('dcba.') == 'dbca.'
as first char is "d" and last ".", shouldn't the return value be "dabc."?

Since the first and last characters remain in original place for each word. Thanks for any clarifiaction.

It doesn't say what to return if the array input is empty. I guess you return a []

cool. I'll have alook

Thanks for clearing this up. Strings' lengths aren't necessarily the same.

What's wrong with array.tally?