find Same three word using Rexex

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Hi I would like to find same three word in a sentence
Eg: This is good good good time for for for all

I would like to find "good" and "for"

I used

C#

\b(\w+)\s+\1\b

but didn't get the result

Posted 8-Feb-15 23:05pm

Balav4

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Peter Leow · Answer 1 · 2015-02-08T23:51:00

Solution 3

Try this:

\b(\w+)\b\s+\1\b\s+\1\b

\1 means group 1 which refers to the (\w+)
effectively, the whole regex finds word that repeats thrice.

Posted 8-Feb-15 23:51pm

Peter Leow

Updated 8-Feb-15 23:54pm

v5

Santosh K. Tripathi · Answer 2 · 2015-02-08T23:20:00

Solution 1

Hi,
See these links and dig more about regular expression

1. The 30 Minute Regex Tutorial[^]

2. https://msdn.microsoft.com/en-us/library/ms228595.aspx[^]

3. http://www.dotnetperls.com/regex-match[^]

Posted 8-Feb-15 23:20pm

Santosh K. Tripathi

OriginalGriff · Answer 3 · 2015-02-08T23:22:00

That isn't really something a Regex is good at: it's a text processor, not a syntax analyser. It isn't good at comparing values to make sure they are the same.

Instead, do it in C# by using string.Split to break the sentence into individual words, and then either process them with a loop, or with Linq - it'll work a lot, lot better and be easier to read and modify later.