Notes for Slide 12
In the lab, you will modify earlier programs to verify that
expected input is valid. Also, you will write a "Concrete Painter"
to reverse the order of words in a String (a word is defined as
all the characters up to a space).
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, [12 (top)], 13, [Lab]