Here's my code for section 5:
numbers = [5, 4, 16, 67, 4, 3, 6, 8, 19]
def alphabetize(arr, rev=false)
If, in the second line, I use 'number.sort!', the code passes, but still has an error code. If, on the other hand, I use 'arr.sort!' like the code above, there's what looks like the right output, but it doesn't pass.