





"""simple docstring"""





def 		lowerCAmelCase_     (  lowercase_       :							list[int]		):

 '''simple docstring'''






 if len(lowercase_		) > 1:
  __SCREAMING_SNAKE_CASE			:      Dict 							=	len(lowercase_		) // 2  # Finds the middle of the array
  __SCREAMING_SNAKE_CASE			:      Tuple 							=	arr[
      :middle_length
  ]  # Creates an array of the elements in the first half.
  __SCREAMING_SNAKE_CASE			:      str 							=	arr[
      middle_length:
  ]  # Creates an array of the elements in the second half.
  __SCREAMING_SNAKE_CASE			:      Optional[Any] 							=	len(lowercase_		)
  __SCREAMING_SNAKE_CASE			:      List[Any] 							=	len(lowercase_		)
  merge(lowercase_		)  # Starts sorting the left.
  merge(lowercase_		)  # Starts sorting the right
  __SCREAMING_SNAKE_CASE			:      List[Any] 							=	0  # Left Counter
  __SCREAMING_SNAKE_CASE			:      List[Any] 							=	0  # Right Counter
  __SCREAMING_SNAKE_CASE			:      Optional[int] 							=	0  # Position Counter
  while (
      left_index < left_size and right_index < right_size
  ):  # Runs until the lowers size of the left and right are sorted.
   if left_array[left_index] < right_array[right_index]:
    __SCREAMING_SNAKE_CASE			:      List[Any] 							=	left_array[left_index]
    left_index += 1
   else:
    __SCREAMING_SNAKE_CASE			:      Dict 							=	right_array[right_index]
    right_index += 1
   index += 1
  while (
      left_index < left_size
  ):  # Adds the left over elements in the left half of the array
   __SCREAMING_SNAKE_CASE			:      str 							=	left_array[left_index]
   left_index += 1
   index += 1
  while (
      right_index < right_size
  ):  # Adds the left over elements in the right half of the array
   __SCREAMING_SNAKE_CASE			:      str 							=	right_array[right_index]
   right_index += 1
   index += 1
 return arr


if __name__ == "__main__":
    import doctest

    doctest.testmod()








"""simple docstring"""





#
# Sort large text files in a minimum amount of memory
#
import argparse
import os





class       snake_case		:
      lowerCamelCase__      =			'''block_{0}.dat'''

      def __init__(      self       :int						,							_lowerCamelCase       :Dict						):
       __SCREAMING_SNAKE_CASE			:      List[str] 							=	filename
       __SCREAMING_SNAKE_CASE			:      Tuple 							=	[]

      def 						SCREAMING_SNAKE_CASE_      (      self       :List[Any]						,							_lowerCamelCase       :Tuple						,							_lowerCamelCase       :Union[str, Any]						):
       __SCREAMING_SNAKE_CASE			:      Any 							=	self.BLOCK_FILENAME_FORMAT.format(_lowerCamelCase						)
       with open(_lowerCamelCase						,							'''w'''						) as file:
        file.write(_lowerCamelCase						)
       self.block_filenames.append(_lowerCamelCase						)

      def 						SCREAMING_SNAKE_CASE_      (      self       :int						):
       return self.block_filenames

      def 						SCREAMING_SNAKE_CASE_      (      self       :Tuple						,							_lowerCamelCase       :List[str]						,							_lowerCamelCase       :Optional[Any]=None						):
       __SCREAMING_SNAKE_CASE			:      int 							=	0
       with open(self.filename						) as file:
        while True:
         __SCREAMING_SNAKE_CASE			:      Any 							=	file.readlines(_lowerCamelCase						)

         if lines == []:
          break

         if sort_key is None:
          lines.sort()
         else:
          lines.sort(key=_lowerCamelCase						)

         self.write_block(''''''.join(_lowerCamelCase						)						,							_lowerCamelCase						)
         i += 1



      def 						SCREAMING_SNAKE_CASE_      (      self       :Tuple						):
       map(os.remove						,							self.block_filenames						)







class       snake_case		:

      def 						SCREAMING_SNAKE_CASE_      (      self       :int						,							_lowerCamelCase       :Tuple						):
       __SCREAMING_SNAKE_CASE			:      List[str] 							=	-1
       __SCREAMING_SNAKE_CASE			:      List[str] 							=	None

       for i in range(len(_lowerCamelCase						)						):
        if min_str is None or choices[i] < min_str:
         __SCREAMING_SNAKE_CASE			:      Tuple 							=	i

       return min_index







class       snake_case		:

      def __init__(      self       :str						,							_lowerCamelCase       :Tuple						):
       __SCREAMING_SNAKE_CASE			:      Any 							=	files
       __SCREAMING_SNAKE_CASE			:      str 							=	set()
       __SCREAMING_SNAKE_CASE			:      Dict 							=	len(_lowerCamelCase						)
       __SCREAMING_SNAKE_CASE			:      str 							=	{i: None for i in range(self.num_buffers						)}

      def 						SCREAMING_SNAKE_CASE_      (      self       :Optional[Any]						):
       return {
           i: self.buffers[i] for i in range(self.num_buffers						) if i not in self.empty
       }

      def 						SCREAMING_SNAKE_CASE_      (      self       :Union[str, Any]						):
       for i in range(self.num_buffers						):
        if self.buffers[i] is None and i not in self.empty:
         __SCREAMING_SNAKE_CASE			:      int 							=	self.files[i].readline()

         if self.buffers[i] == "":
          self.empty.add(_lowerCamelCase						)
          self.files[i].close()

       if len(self.empty						) == self.num_buffers:
        return False

       return True



      def 						SCREAMING_SNAKE_CASE_      (      self       :Any						,							_lowerCamelCase       :List[str]						):
       __SCREAMING_SNAKE_CASE			:      Dict 							=	self.buffers[index]
       __SCREAMING_SNAKE_CASE			:      List[Any] 							=	None

       return value







class       snake_case		:

      def __init__(      self       :List[Any]						,							_lowerCamelCase       :Optional[int]						):
       __SCREAMING_SNAKE_CASE			:      Optional[int] 							=	merge_strategy

      def 						SCREAMING_SNAKE_CASE_      (      self       :int						,							_lowerCamelCase       :Tuple						,							_lowerCamelCase       :Any						,							_lowerCamelCase       :str						):
       __SCREAMING_SNAKE_CASE			:      List[Any] 							=	FilesArray(self.get_file_handles(_lowerCamelCase						,							_lowerCamelCase						)						)
       with open(_lowerCamelCase						,							'''w'''						,							_lowerCamelCase						) as outfile:
        while buffers.refresh():
         __SCREAMING_SNAKE_CASE			:      List[Any] 							=	self.merge_strategy.select(buffers.get_dict()						)
         outfile.write(buffers.unshift(_lowerCamelCase						)						)



      def 						SCREAMING_SNAKE_CASE_      (      self       :Union[str, Any]						,							_lowerCamelCase       :int						,							_lowerCamelCase       :Optional[Any]						):
       __SCREAMING_SNAKE_CASE			:      Union[str, Any] 							=	{}

       for i in range(len(_lowerCamelCase						)						):
        __SCREAMING_SNAKE_CASE			:      Optional[int] 							=	open(filenames[i]						,							'''r'''						,							_lowerCamelCase						)  # noqa: UP015

       return files







class       snake_case		:

      def __init__(      self       :Dict						,							_lowerCamelCase       :str						):
       __SCREAMING_SNAKE_CASE			:      int 							=	block_size

      def 						SCREAMING_SNAKE_CASE_      (      self       :Optional[Any]						,							_lowerCamelCase       :List[str]						,							_lowerCamelCase       :Dict=None						):
       __SCREAMING_SNAKE_CASE			:      Dict 							=	self.get_number_blocks(_lowerCamelCase						,							self.block_size						)
       __SCREAMING_SNAKE_CASE			:      Dict 							=	FileSplitter(_lowerCamelCase						)
       splitter.split(self.block_size						,							_lowerCamelCase						)

       __SCREAMING_SNAKE_CASE			:      Any 							=	FileMerger(NWayMerge()						)
       __SCREAMING_SNAKE_CASE			:      List[Any] 							=	self.block_size / (num_blocks + 1)
       merger.merge(splitter.get_block_filenames()						,							filename + '''.out'''						,							_lowerCamelCase						)

       splitter.cleanup()



      def 						SCREAMING_SNAKE_CASE_      (      self       :Dict						,							_lowerCamelCase       :str						,							_lowerCamelCase       :List[Any]						):
       return (os.stat(_lowerCamelCase						).st_size / block_size) + 1







def 		lowerCAmelCase_     (  lowercase_       :							str		):

 '''simple docstring'''






 if string[-1].lower() == "k":
  return int(string[:-1]		) * 1024
 elif string[-1].lower() == "m":
  return int(string[:-1]		) * 1024 * 1024
 elif string[-1].lower() == "g":
  return int(string[:-1]		) * 1024 * 1024 * 1024
 else:
  return int(lowercase_		)




def 		lowerCAmelCase_     (  ):

 '''simple docstring'''






 __SCREAMING_SNAKE_CASE			:      Optional[Any] 							=	argparse.ArgumentParser()
 parser.add_argument(
     '''-m'''			,				'''--mem'''			,				help='''amount of memory to use for sorting'''			,				default='''100M'''		)
 parser.add_argument(
     '''filename'''			,				metavar='''<filename>'''			,				nargs=1			,				help='''name of file to sort'''		)
 __SCREAMING_SNAKE_CASE			:      Optional[Any] 							=	parser.parse_args()

 __SCREAMING_SNAKE_CASE			:      List[str] 							=	ExternalSort(parse_memory(args.mem		)		)
 sorter.sort(args.filename[0]		)


if __name__ == "__main__":
    main()

