Challenge #130: Is There an Echo in Here?

[JoeM]

You have a source system that doesn't seem to be working quite as expected. The system will frequently take any given word and duplicate it within a string. You job is to clean it up! Below we have a few sample phrases that are indicative of the system's problem. Find all words that have duplicate consecutive words and reduce the duplication to a single word again!

(Advanced Users: There is a one tool solution for this!)

Deja Vu anyone anyone?

[JoBen]

Good post! Cheers!

[danilang]

The power in that one tool!  Even if the syntax is almost as convoluted as APL

Spoiler

Dan

[danrh]

Spoiler

I'm not sure how I survived before I discovered RegEx...

REGEX_Replace([Phrase], '(^|[ ])(.*) (\2)', '$1$2')

[ggruccio]

Will have to look at those one-tool solutions - Impressive!

For this one I had an immediate idea to solve it a certain way --- which worked!

[patrick_digan]

Here is my 1 tool solution. 

Spoiler

Isn't it funny how we're all accomplishing the same thing but our regex expressions are slightly different and will handle new data slightly differently....

[brgilbert]

Learning RegEx so it's helpful to see examples of how it all works.  

Spoiler

REGEX_Replace([Phrase], '(^|\s)(.*) (\2)', "$1$2")

[mpennington]

Solution attached.

Spoiler

Always a bit of trial and error for me to make these RegEx patterns work, but I think I got it.  

[OldDogNewTricks]

1 tool solution...

[papalow]

Thank you for the challenge