Forum: Ruby how to find difference between two strings

Hi,

I have two strings, like
@a = "hello"
@b = "h123llo"

so in that how can i print diffrence?

i want difference like user know which diffrence on which character.

Please let me know if any one know.

Thanks in advance
Priyank

One method, and I stress this is only one method, is the Levenshtein 
distance at

http://en.wikibooks.org/wiki/Algorithm_implementation/Strings/Levenshtein_distance#Ruby

and it has code, in ruby!

On Fri, Jul 30, 2010 at 8:17 AM, Priyank Shah 
<shahpriyank01@gmail.com>wrote:

> Please let me know if any one know.
>
> Thanks in advance
> Priyank
> --
> Posted via http://www.ruby-forum.com/.
>
>
"Difference" in this case does not seem very well defined.

On Jul 30, 9:17 am, Priyank Shah <shahpriyan...@gmail.com> wrote:
> Hi,
>
> I have two strings, like
> @a = "hello"
> @b = "h123llo"
>
> so in that how can i print diffrence?
>
> i want difference like user know which diffrence on which character.

There is strmask (http://rubyworks.github.com/strmask/)

Also the Levenshtein distance is  String#edit_distance in Ruby Facets.

> 
> i want difference like user know which diffrence on which character.
> 
There's a "differ" gem which could be useful for you.

Gavin

Priyank Shah wrote:
> Hi,
> 
> I have two strings, like
> @a = "hello"
> @b = "h123llo"
> 
> so in that how can i print diffrence?
> 
> i want difference like user know which diffrence on which character.
> 
> Please let me know if any one know.
> 
> Thanks in advance
> Priyank



Thanks to you all but i want difference so i used

http://codeidol.com/other/rubyckbk/Files-and-Directories/Comparing-Two-Files/

And its working fine but i actully want exact difference.

and it just shows me number of differences.

So if you have any idea regarding this then please suggest.

Thanks,
Priyank Shah

On Jul 31, 1:11 am, Priyank Shah <shahpriyan...@gmail.com> wrote:
>
>
> and it just shows me number of differences.
>
> So if you have any idea regarding this then please suggest.

As in:

   @b.split(//) - @a.split(//)

?