Input:
id|Name|app1|app2
1|abc|234|231|
2|xyz|123|215|
1|abc|265|321|
3|asd|213|235|

In the above input if id gets repeated I am appending app1,app2 . And printing it once . My expected output as follows,
Output:
id|Name|app1|app2
1|abc|234,265|231,321|
2|xyz|123|215|
3|asd|213|235|

My Code:
#! usr/bin/perl
use strict;
use warnings;
my $basedir = 'E:\Perl\Input\\';
my $file ='doctor.txt';
my $counter = 0;
my %RepeatNumber;
my $pos=0;
 
open(OUTFILE, '>', 'E:\Perl\Output\DoctorOpFile.csv') || die $!;
open(FH, '<', join('', $basedir, $file)) || die $!;
my $line = readline(FH);

unless ($counter) {
chomp $line;
         print OUTFILE $line;
         print OUTFILE "\n";
    }
    while ($line = readline(FH)) {
chomp $line;
 my @obj = split('\|',$line);
if($RepeatNumber{$obj[0]}++)
{
my $str1= join("|",$obj[0]);
my $str2=join(",",$obj[2],$obj[3]);
print OUTFILE join("|",$str1,$str2);
print OUTFILE "\n";
}
}

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In reply to appending values based on criteria by logeshwaran

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