Regular Expression For Duplicate Words

Question

I\'m a regular expression newbie, and I can\'t quite figure out how to write a single regular expression that would "match" any duplicate consecutive words such as

Answer 1

Regex to Strip 2+ duplicate words (consecutive/non-consecutive words)

Try this regex that can catch 2 or more duplicates words and only leave behind one single word. And the duplicate words need not even be consecutive.

/\b(\w+)\b(?=.*?\b\1\b)/ig

Here, \b is used for Word Boundary, ?= is used for positive lookahead, and \1 is used for back-referencing.

Example Source