input: Write a function to print the absolute difference between two given numbers.
  def absolute_difference(A, B): 
      return abs(A - B) 
    
  assert absolute_difference(9, 5)==4
  assert absolute_difference(5, 9)==4
  assert absolute_difference(0, 0)==0
  assert absolute_difference(-5, 5)==10
  assert absolute_difference(-3, -7)==4
output: def absolute_difference(A, B): 
      return abs(A - B)