

from __future__ import annotations







def       snake_case__    (       lowerCAmelCase_,   lowerCAmelCase_      ):





     """simple docstring"""







     SCREAMING_SNAKE_CASE										=[None] * (len(lowerCAmelCase_      ) + len(lowerCAmelCase_      ))

     SCREAMING_SNAKE_CASE										=0  # pointer to current index for left Half
     SCREAMING_SNAKE_CASE										=0  # pointer to current index for the right Half
     SCREAMING_SNAKE_CASE										=0  # pointer to current index for the sorted array Half

     while pointera < len(lowerCAmelCase_      ) and pointera < len(lowerCAmelCase_      ):
          if left_half[pointera] < right_half[pointera]:
               SCREAMING_SNAKE_CASE										=left_half[pointera]
               pointera += 1
               index += 1
          else:
               SCREAMING_SNAKE_CASE										=right_half[pointera]
               pointera += 1
               index += 1
     while pointera < len(lowerCAmelCase_      ):
          SCREAMING_SNAKE_CASE										=left_half[pointera]
          pointera += 1
          index += 1

     while pointera < len(lowerCAmelCase_      ):
          SCREAMING_SNAKE_CASE										=right_half[pointera]
          pointera += 1
          index += 1

     return sorted_array







def       snake_case__    (       lowerCAmelCase_      ):





     """simple docstring"""







     if len(lowerCAmelCase_      ) <= 1:
          return array
     # the actual formula to calculate the middle element = left + (right - left) // 2
     # this avoids integer overflow in case of large N
     SCREAMING_SNAKE_CASE										=0 + (len(lowerCAmelCase_      ) - 0) // 2

     # Split the array into halves till the array length becomes equal to One
     # merge the arrays of single length returned by mergeSort function and
     # pass them into the merge arrays function which merges the array
     SCREAMING_SNAKE_CASE										=array[:middle]
     SCREAMING_SNAKE_CASE										=array[middle:]

     return merge(merge_sort(lowerCAmelCase_      ),   merge_sort(lowerCAmelCase_      )      )


if __name__ == "__main__":
 import doctest

 doctest.testmod()




import random
import sys

_lowerCamelCase								="ABCDEFGHIJKLMNOPQRSTUVWXYZ"







def       snake_case__    (       ):





     """simple docstring"""







     SCREAMING_SNAKE_CASE										=input('Enter message: '      )
     SCREAMING_SNAKE_CASE										='LFWOAYUISVKMNXPBDCRJTQEGHZ'
     SCREAMING_SNAKE_CASE										=input('Encrypt/Decrypt [e/d]: '      )

     check_valid_key(lowerCAmelCase_      )

     if resp.lower().startswith('e'      ):
          SCREAMING_SNAKE_CASE										='encrypt'
          SCREAMING_SNAKE_CASE										=encrypt_message(lowerCAmelCase_,   lowerCAmelCase_      )
     elif resp.lower().startswith('d'      ):
          SCREAMING_SNAKE_CASE										='decrypt'
          SCREAMING_SNAKE_CASE										=decrypt_message(lowerCAmelCase_,   lowerCAmelCase_      )

     print(F'\n{mode.title()}ion: \n{translated}'      )







def       snake_case__    (       lowerCAmelCase_      ):





     """simple docstring"""







     SCREAMING_SNAKE_CASE										=list(lowerCAmelCase_      )
     SCREAMING_SNAKE_CASE										=list(lowerCAmelCase_      )
     key_list.sort()
     letters_list.sort()

     if key_list != letters_list:
          sys.exit('Error in the key or symbol set.'      )







def       snake_case__    (       lowerCAmelCase_,   lowerCAmelCase_      ):





     """simple docstring"""







     return translate_message(lowerCAmelCase_,   lowerCAmelCase_,   'encrypt'      )







def       snake_case__    (       lowerCAmelCase_,   lowerCAmelCase_      ):





     """simple docstring"""







     return translate_message(lowerCAmelCase_,   lowerCAmelCase_,   'decrypt'      )







def       snake_case__    (       lowerCAmelCase_,   lowerCAmelCase_,   lowerCAmelCase_      ):





     """simple docstring"""







     SCREAMING_SNAKE_CASE										=''
     SCREAMING_SNAKE_CASE										=LETTERS
     SCREAMING_SNAKE_CASE										=key

     if mode == "decrypt":
          SCREAMING_SNAKE_CASE						,  SCREAMING_SNAKE_CASE										=chars_b, chars_a

     for symbol in message:
          if symbol.upper() in chars_a:
               SCREAMING_SNAKE_CASE										=chars_a.find(symbol.upper()      )
               if symbol.isupper():
                    translated += chars_b[sym_index].upper()
               else:
                    translated += chars_b[sym_index].lower()
          else:
               translated += symbol

     return translated







def       snake_case__    (       ):





     """simple docstring"""







     SCREAMING_SNAKE_CASE										=list(lowerCAmelCase_      )
     random.shuffle(lowerCAmelCase_      )
     return "".join(lowerCAmelCase_      )


if __name__ == "__main__":
 main()

