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Perl Misc
How to do this job with regular expression
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[QUOTE="Josef Moellers, post: 4778326"] You probably mean "letter" rather than "word", as there are no two identical words in that line. The keyword you are looking for is "backreference", e.g. $a =~ /(.)\1\1\1/; matches 4 identical anythings in $a. You can put more complex patterns between the parentheses if you desire. [/QUOTE]
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How to do this job with regular expression
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