Ruby .sort method

Question

I am doing challenge in ruby

What's the output of this code?

arr = ["baa", "aba", "aab"]
arr.sort
print arr [0]

----------

the answer is "baa"

But as far as I understand .sort it should be "aab".

Please explain if I am wrong.

Answer 1

documentation usually help in this case.
sort is returning a new array, but not altering the array itself.
sort! do