From: teresa nuagen <s-unguyen2@...>
Date: 2011-10-17T07:02:46+09:00
Subject: Re: writing a poem backwards or in reverse order

"Jesús Gabriel y Galán" <jgabrielygalan@gmail.com> wrote in post 
#1026900:
> On Sun, Oct 16, 2011 at 8:08 PM, teresa nuagen
> <s-unguyen2@huskers.unl.edu> wrote:
>> alright thanks for your advice and tips. I'm familiarizing myself with
>> string and the order of words. Is array applied in this problem or i'm I
>> only focusing on string?
>
> String#split returns an array of strings, so yes, you need to
> understand arrays a bit.
> An array is a container of objects, in which each element can be
> accessed by index:
>
> array = [1,2,3,4]
> array[0] --> 1
> array[1] --> 2
> etc.
>
> You can traverse an array using the code I showed above.
>
>> Can I have the poem in ruby and then change the order using separate
>> programs or do I have to open the file through nano first and then in
>> ruby? If so how do I open a nano file using ruby? My current file is
>> "nano poem" to open it in ruby do I have to change it into a ".txt"
>> file. How would I do that?
>
> I guess your idea is to have a text file containing the original poem,
> and then using Ruby to reverse the order. You can create your file
> using any text editor such as nano, vi, gedit or whatever (notepad on
> Windows, for example). Save it with a name that you like, for example
> poem, it doesn't need to end in .txt. Then you can read the contents
> of the file using File.read, which returns a string with the contents
> of the file. You can then split on "\n" (the end of line character)
> and you get back an array of lines. Try this in irb:
>
> contents = File.read("poem")
> puts contents
> lines = contents.split("\n")
> p lines
>
> and work from there.
>
> Jesus.

I was able to figure out to program 1 and 3. This was the method I used 
using array.

program 1:

contents = File.read("poem")
puts contents

my_file = File.new("poem")
line_array = my_file.readlines()
line_array.reverse!
line_array.each {|line| puts line}

my_file.close

program 3:

contents = File.read("poem")
puts contents

my_file = File.new("poem")
new_array = my_file.readlines()
new_array.each do |line|
puts line.reverse!
end

I'm trying to figure out how to incorporate the same method using an 
array for program 2, but I keep getting an error message. Is using a 
string the only way I can rearrange the order of words? Or am I tying 
both arrays and string in order to do it.

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