How to find difference between two strings

Ruby
1

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

2

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!

3

On Jul 30, 9:17 am, Priyank S. [email protected] 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 F.s.

4

On Fri, Jul 30, 2010 at 8:17 AM, Priyank S.
[email protected]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.

5

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

There’s a “differ” gem which could be useful for you.

Gavin

6

Priyank S. 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

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 S.

7

On Jul 31, 1:11 am, Priyank S. [email protected] 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(//)

?