you'll need a hash to check for the dupes.
$hash{$_}++ foreach(split /\t/,$string);
foreach (keys (%hash)) {print $_."\n" if ($hash{$_} > 1 && /^\D+$/)}

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"one who asks a question is a fool for five minutes; one who does not ask a question remains a fool forever."

mk at perl dot org dot br

In reply to Re^4: How do you find duplicates in a string? by mk.
in thread How do you find duplicates in a string? by Anonymous Monk

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