new_contents: import unittest
  """
  Given an array of numbers, arrange them in a way that yields the maximum value.
  Input: 54 546 548 60
  Output: 6054854654
  Input: 1 34 3 98 9 76 45 4
  Output: 998764543431
  """
  
  """
  Approach:
  1. Sort the numbers using a custom comparator.
  2. The comparator works as follows: suppose it takes two numbers X and Y.
  3. If XY > YX, it returns 1, elif XY < YX, it returns -1 else it returns 0.
  4. For eg. suppose X = 60 and Y = 548. XY = 60548, YX = 54860. So, X should come before Y, hence return 1.
  """
  
  
  def combined_number_compartor(first, second):
      str_first_second = str(first) + str(second)
      str_second_first = str(second) + str(first)
      int_first_second = int(str_first_second)
      int_second_first = int(str_second_first)
  
      # Sorting is in non-increasing order
      if int_first_second > int_second_first:
          return -1
      elif int_first_second < int_second_first:
          return 1
      return 0
  
  
  def arrange_numbers_to_form_biggest_number(list_of_numbers):
      list_of_numbers = sorted(list_of_numbers, cmp=combined_number_compartor)
      return int(''.join(map(lambda x: str(x), list_of_numbers)))
  
  
  class TestArrangement(unittest.TestCase):
  
      def test_arrangement(self):
          self.assertEqual(arrange_numbers_to_form_biggest_number([54, 546, 548, 60]), 6054854654)
  
  
  
subject: Rearrange array numbers to form biggest number