From: Geoff <samekh@...>
Date: 2006-07-26T13:55:09+09:00
Subject: Learn to program (Chris Pine) array.sort

Hey,

I've searched the archives and don't see anything on this problem for
Chris' book. From Chapter 7 on Arrays and Iterators:

"Write the program we talked about at the very beginning of this
chapter.
Hint: There's a lovely array method which will give you a sorted
version of an array: sort. Use it!"

>From the beginning of the chapter:

"Let's write a program which asks us to type in as many words as we
want (one word per line, continuing until we just press Enter on an
empty line), and which then repeats the words back to us in
alphabetical order."

Here is what I have that works, but I had to change it in order to get
the program to exit. You see I can't seem to get the program to exit
on just entering a blank line at the prompt, so I wrote some code so
that it would quit with when I entered the word "bye."

array_input = []
input = ''
while input != "bye"
  input = gets.chomp
  array_input << input
end
puts
array_input.delete_if { |x| x == 'bye' }
puts array_input.sort

Problem is I would actually like to know how to solve the problem as
written! So when I use "while input != "something goes here and I'm
not sure what to use to designate a blank line." Then I can eliminate
the second to the last line.

Thanks!

Geoff