Hi Aaron,

Thanks for the reply. I tried your suggestion, but it was not working as I found that there was repeats in the second column (frequency) of my input file. So, I changed the format of first column of output by concatenating the tags to the end. In that way, it looks unique. Now, I would like to sort on the first column of my output. I did create another hash to make it work. So far it is not successful. The codes that I changed are below. Any suggestions will be helpful 

while (my $line=<$FILE1>)
{
    chomp $line;
    $line=~s/\t/,/g;
    my @columns=split(/,/, $line);
    my $tags=$columns[0];
    #$tag{$columns[0]}=\@columns;
     $tag{$tags}=$line;
}


    foreach my $tags (keys %tag){
    my $header;
    my $range=500000;
    my @columns=split(/,/,$tag{$tags});
        $tags=$columns[0];
       my $freq=$columns[1];
    my $random_number=int(rand($range));
        $header=">HWTI_".$freq."_".$random_number.$tags;
    $header=~tr/"//d;
    my $printline=$tag{$tags};
    $printline=$header.",".$printline;
            
    print $FILE2 "$printline\n";
    
    }

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In reply to Re^2: Sorting issue by bluray
in thread Sorting issue by bluray

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