new_contents: import sort 
  
  def main():
    test1_list = [1,3,5,7,9]
    print sort.bubble_sort(test1_list)
    
    print sort.insert_sort(test1_list)
    
    print sort.merge_sort(test1_list)
    
    print sort.quick_sort(test1_list)
    
  main()
  
subject: Add tests for sort