- For every array element,
  - Extract the numeric component of the element.
  - If the hash contains a key matching the extracted component,
    - If the hash value is empty,
      - Print whatever
    - Else
      - Print whatever

[download]

Update: I was letting you do the work yourself, but since others have posted code, 

for my $id (@array_code) {
   my ($num) = $id =~ /(\d+)/ or next;
   next if !exists($code_numbers{$num});
   my $code = $code_numbers{$num} || 'IN';
   print("$id $code\n");
}

[download]

Or if %code_numbers can contain a value of '0', 

for my $id (@array_code) {
   my ($num) = $id =~ /(\d+)/ or next;
   next if !exists($code_numbers{$num});
   my $code = $code_numbers{$num};
   $code = 'IN' if !length($code);
   print("$id $code\n");
}

[download]

In reply to Re: Search Hash with array element Help! by ikegami
in thread Search Hash with array element Help! by Anonymous Monk

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