Problem X: How Green is My Valley?
Print the words "how", "green", "is", "my" and "valley", one per line,
in lower case, in alphabetical order.
Sample Input
there is no input for this program
Output for Sample Input
green
how
is
my
valley
Problem Y: And the Green Grass Grows
Write a program that reads a single line of input, not greater than 100
characters long, consisting of a number
of lower case words separated by spaces, and print the words, one per
line, in alphabetical order. Print each word only once regardless of
how many times it appears in the input.
Sample Input
how green is my valley
Output for Sample Input
green
how
is
my
valley