//  Largest.swift  Copyright (c) Kari Laitinen

//  http://www.naturalprogramming.com

//  2014-10-10  File created.
//  2016-11-04  Converted to Swift 3.

import Foundation


// The following function takes two input parameters and
// and one input/output parameter. Through the inout parameter
// the caller gets the Int value.

func search_largest_integer( _ array_of_integers : [ Int ],
                             _ number_of_integers_to_process : Int,
                             _ largest_integer : inout Int )
{
   largest_integer   =  array_of_integers[ 0 ]
   var  integer_index     =  1

   while   integer_index  <  number_of_integers_to_process 
   {
      if  array_of_integers[ integer_index ] > largest_integer
      {
         largest_integer  =  array_of_integers[ integer_index ]
      }

      integer_index   +=  1
   }
}

// Next is the main program in which the above function is
// called twice.

var  first_array   =  [ 44, 2, 66, 33, 9 ]
var  second_array  =  [ 888, 777, 66, 999, 998, 997 ]

var found_largest_integer : Int = 0 

search_largest_integer( first_array, 5, &found_largest_integer )

print( "\n The largest integer in first_array is "
    +  String( found_largest_integer )  +  ".\n" )

search_largest_integer( second_array, 6, &found_largest_integer )

print( "\n The largest integer in second_array is "
    +  String( found_largest_integer ) +  ".\n\n" )