From: Robert Klemme <shortcutter@...>
Date: 2012-09-24T21:42:35+09:00
Subject: Re: Insert at index

On Mon, Sep 24, 2012 at 2:28 PM, Geena Tho <lists@ruby-forum.com> wrote:
> Thank you Wayne, But
>
> (0..n-1).each do |i|
>     st.insert(i,ch)
> end
> This is my code, st is my string. I need to insert a character, say ch.
> n is 3
>
> for example, if st = 'ab' and ch = 'c' i get:
> abc
> aabc
> aaabc
> But the desired output is
> abc
> bac
> bca

The last two outputs have order of "a" and "b" reversed - that can
never be the result of simply inserting something into "ab".  Are
those typos or is it intentional?  If it is intentional, what is it
that you _really_ want?

In case of type, please have a look:

irb(main):001:0> st = 'ab'
=> "ab"
irb(main):002:0> ch = 'c'
=> "c"
irb(main):003:0> 3.times {|i| puts st.dup.insert(i, ch)}
cab
acb
abc
=> 3

Kind regards

robert



-- 
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/