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  1. or download this
      @reverse = reverse @data;
      @data = @reverse;
    
  2. or download this
      print $data[-1];
      print $data[$#data];
    ...
      print $data[0];
      print shift @data;  # NOTE: THIS SHORTENS THE ARRAY
      print scalar splice(@data,0,1);  # NOTE: SAME AS shift