What if I have an array called (@hydrogen_split).
Could I not write your code like this ? 

foreach $i(0..@hydrogen_split){             
    chomp;
    $hydrogen_split{$key}++;
}

for ( sort grep { $hydrogen_split{$key} !=1 } keys %hydrogen_split){
print "$key\n";
}

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In reply to Re: Re: Re: Re: finding duplicate data by harry34
in thread finding duplicate data by harry34

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