Hello,
I have created a hash after parsing a file in order to count the occurrence of values.
I am able to calculate and print the counts for the values, but it goes to output multiple times. How can I print duplicates once?
use strict;
#open file
open(my $in,"/Users/mydir/Desktop/CCDS.current.txt") or die " Can't op
+en file: $!";
#open out file
open(OUT, ">/Users/mydir/Desktop/genesperchrcnt.txt");
# initialize the hash
my %geneids=();
#open the file and push the info from the designated columns into it
# remove header
my $firstline = <$in>;
chomp $firstline;
while(<$in>){
    chomp; # remove the newline character
    my @fields = split (/\t/);
    #extract the columns that we are interested in.
    # Populate the key value pairs of the hash with $gene and $id
    $geneids{$fields[2]} = $fields[0];
    # initialize an array to store hash values
    my @chr;
    push @chr, $fields[0];
    #count chromosome number which is the value in the hash
    $geneids{$fields[0]}++;
    next if $geneids{$fields[0]} > 1;
    foreach my $values (sort values %geneids) {
        print OUT "Chromosome $values has $geneids{$values} genes\n"; 
    }
}
close($in);
close(OUT);
=cut Output
Chromosome 1 has 1635 genes
Chromosome 1 has 1635 genes
Chromosome 1 has 1635 genes
Chromosome 1 has 1635 genes
Chromosome 3 has 778 genes
Chromosome 3 has 778 genes
Chromosome 3 has 778 genes
Chromosome 3 has 778 genes
Chromosome 4 has 518 genes
Chromosome 4 has 518 genes
Chromosome 4 has 518 genes
Chromosome 4 has 518 genes

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I need each duplicate printed once. What's the best way to do this?
DeepSpace

In reply to how can I print my hash values once? by lomSpace

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