http://www.perlmonks.org?node_id=589930


in reply to Five Ways to Reverse a String of Words (C#, Perl 5, Perl 6, Ruby, Haskell)

Still in Java-dom, here's a version in Groovy: 
def reverseWords( str ) {
  str.split('\\s+').
        findAll {it.length() > 0}.
        reverse().join(' ')
}

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