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(3, 7)==4
  assert absolute_difference(-1, 1)==2
  assert absolute_difference(-5, -3)==2
  assert absolute_difference(0, 0)==0
output: def absolute_difference(A, B): 
      return abs(A - B)