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Regular Expression, detecting certain words

Posted on 2007-04-08
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Last Modified: 2010-04-23
Hi,

I've got a regular expression that checks if sentences such as "A duck is a bird" or "A kitten is a cat" are valid:

^(A)\s\w+\s(is)\s(a)\s\w+$

I'm using vb.net and I want to tell which words are different, i.e I want to pickup from the first sentence "duck" and "bird" and "kitten" and "cat" from the second one.  How can I do this?

Cheers,
Col.
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Question by:whos_wee_dug
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4 Comments
 
LVL 84

Expert Comment

by:ozo
ID: 18873597
^A\s\(w+)\sis\sa\s(\w+)$
0
 

Author Comment

by:whos_wee_dug
ID: 18873599
Also, I tried this but it didn't quite work:

        Dim test As String = "A duck is a bird"
        Dim re As New Regex("^(A)\s\w+\s(is)\s(a)\s\w+$")
        test = re.Replace(test, "$1 $2 $3 $4 $5")
        Response.Write("<br/>'" + test + "'")
0
 
LVL 84

Accepted Solution

by:
ozo earned 250 total points
ID: 18873605
Dim re As New Regex("^(A)\s(\w+)\s(is)\s(a)\s(\w+)$")
0
 

Author Comment

by:whos_wee_dug
ID: 18873609
thanks once again ozo, you've been a great help.

Cheers,
Col.
0

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