#  LargestWithIntParameter.py  Copyright (c) Kari Laitinen

#  http://www.naturalprogramming.com

#  2006-05-21  File created.
#  2022-12-18  Converted to Python 3.

#  This program behaves in the same way as program LargestReturned.py
#  in the pythonfiles2 folder (directory).

#  This program demonstrates that it is possible to return
#  data to a calling program by using an object that stores
#  some "primitive" value.


class IntParameter :

   def __init__( self, given_initial_value  =  0 ) :

      self.int_value  =  given_initial_value


   def get_value( self ) :

      return  self.int_value


   def set_value( self, given_new_value ) :

      self.int_value  =  given_new_value




def search_largest_integer( list_of_integers,
                            number_of_integers_in_list,

                            largest_integer_to_caller ) :

   largest_integer  =  list_of_integers[ 0 ]
   integer_index    =  1

   while  integer_index  <  number_of_integers_in_list  :

      if  list_of_integers[ integer_index ] > largest_integer  :

         largest_integer  =  list_of_integers[ integer_index ]


      integer_index   +=  1


   largest_integer_to_caller.set_value( largest_integer )



#  The main program begins.

first_list   =  [ 44, 2, 66, 33, 9 ]
second_list  =  [ 888, 777, 66, 999, 998, 997 ]

found_largest_integer  =  IntParameter()

search_largest_integer( first_list, 5,
                        found_largest_integer )

print( "\n The largest integer in first_list is %d."  %  \
                          found_largest_integer.get_value() )

search_largest_integer( second_list, 6,
                        found_largest_integer )

print( "\n The largest integer in second_list is %d."  %  \
                          found_largest_integer.get_value() )