Help with a Regex

[chickenlicken]

Hello, looking for some help from Regex experts

I am doing some text analysis..

It is partially working, but I end up with some contradictions and repetitions.. e.g. NOT DOG, DOG-PRESENT, or NOT CAT, CAT-PRESENT, CAT-PRESENT. 

The -PRESENT ones are better quality than the 'NOTS' so these should overrule them

I need a Regex that removes repetitions, and looks for the key word (DOG or CAT) and if -PRESENT is there, removes the NOT [KEYWORD].

Is this possible?

[atcodedog05]

Hi @chickenlicken 

Can you provide some expected output It will help us get a better understanding of the usecase.

We will be happy to help : )

[chickenlicken]

So input would be NOT CAT, CAT-PRESENT, CAT-PRESENT

and output would be

CAT-PRESENT

[atcodedog05]

Hi @chickenlicken 

Here is how you can do it.

Workflow:

Hope this helps : )

[binu_acs]

@chickenlicken  are you looking for something like below

[chickenlicken]

Thank you, these both look like great solutions and mega quick !

[chickenlicken]

Is there a way I could adjust it so that it also works where the phrases aren't in this exact order?

Input could be: 

NOT CAT, CAT-PRESENT, CAT-PRESENT

And also 

CAT-PRESENT, NOT CAT

[binu_acs]

@chickenlicken 

[atcodedog05]

Hi @chickenlicken 

My solution should work for any order.

And you allowed to mark more than one posts as solution so feel free 🙂

Hope this helps : )

[chickenlicken]

Ah nearly but not quite there yet - it's complicated because there are lots of versions of these "animals", so if there is e.g. 

NOT DOG, DOG-PRESENT, CAT-PRESENT, NOT CAT, MOUSE-PRESENT then it messes it up

How about if i change the inputs to CAT-YES, CAT-NO, DOG-YES, DOG no, etc... and then split the records multiple times....?

I was wondering if a Regex that looked for the matching first component would be easier...