While working on a question to remove duplicate words in a sentence, I found this solution :
(?i)(\b\w+\b)(\s+\1\b)+
So lets say the sentence is
She left LEft leFT now
Now, as far as I understand, the 1st group - "(\b\w+\b)" matches "left" as it should be a boundary character followed by one or more word characters followed by a boundary character again; and 2nd group "(\s+\1\b)" matches "LEft leFT" as it should be (one or more spaces followed by the group 1 match followed by a boundary character) - repeated one or more times.
But when I try to print them like this :
while (matcher.find()) {
System.out.println (m.group(1) + " - " + m.group(2));
}
The result I expected is
left - LEft leFT
But the actual result is
left - leFT
Can someone explain how this's is happening.
