From: "(r.*n){2}" <perl2ruby@...>
Date: 2010-09-23T12:35:11+09:00
Subject: Re: comparing the first half of a string to the second half

On Sep 21, 11:24 pm, Josh Cheek <josh.ch...@gmail.com> wrote:
> [Note:  parts of this message were removed to make it a legal post.]
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> On Tue, Sep 21, 2010 at 3:41 PM, joe chesak <rubyt...@chesak.com> wrote:
> > I want to be able to test a string, to see if the second half of the string
> > is a duplicate of the first part of the string, and if so I just want the
> > first half (or the second for that matter).  I am using  ruby-1.9.2.
>
> > I can accomplish this with the following:
>
> > str = 'Cyano The CatCyano The Cat'
>
> > str = str[0..str.size/2-1] if str[0..str.size/2-1] == str[str.size/2..-1]
> >  => "Cyano The Cat"
>
> > Is there a better way?
>
> > Joe
>
> Instead of subtracting 1 from the right side of the range, you can just use
> 3 dots.
>
> str   = 'Cyano The CatCyano The Cat'
> half  = str.size / 2
> first = str[0...half]
> last  = str[half..-1]
> str   = first if first == last
> p str

x = s.size
y = x / 2
r = x % 2
puts "#{s[0..y-1]}" if ( r == 0) && (s[0..y-1] == s[y..-1])