From: Rick DeNatale <rick.denatale@...>
Date: 2009-07-19T05:17:50+09:00
Subject: Re: Ordering Steps in a Program

On Sat, Jul 18, 2009 at 3:23 PM, Max Norman<maxnorman@comcast.net> wrote:
> Here is a simple program that stores entered words in an array, then,
> once a blank line is entered, displays them sorted alphabetically
> (another example from Pine's book.) Here are two ways of accomplishing
> this.
>
> #1:
> puts 'Enter words to sort them alphabetically. When you are finished,
>      press "return" on an empty line'
>
> words = []
>
> while true
>  word = gets.chomp
>  if word == ''
>    break
>  end
>  words.push word
> end
>
> puts 'Here they are:'
> puts words.sort
>
> --
>
> #2:
> puts 'Use this application to sort any number of words. Enter them
> below:'
>
> words = []
>
> while true
>  word = gets.chomp
>  words.push word
>  if word ==''
>    break
>  end
> end
>
> puts 'Here are the words you entered, sorted:'
> puts words.sort
>
> --
>
> Which one is more correct? The former was presented by Pine as a
> possible solution, and the latter is what I came up with after
> consulting this suggestion.

The difference is that yours will include the empty string in the
array to be sorted.


-- 
Rick DeNatale

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