
from .balanced_parentheses import balanced_parentheses
from .stack import Stack






def  a_	( __lowercase     :			str				)				->						int:
			return {"+": 1, "-": 1, "*": 2, "/": 2, "^": 3}.get(__lowercase ,      -1				)






def  a_	( __lowercase     :			str				)				->						str:
			if not balanced_parentheses(__lowercase				):
						raise ValueError('Mismatched parentheses'				)
			_snake_case						=    Stack()
			_snake_case						=    []
			for char in expression_str:
						if char.isalpha() or char.isdigit():
									postfix.append(__lowercase				)
						elif char == "(":
									stack.push(__lowercase				)
						elif char == ")":
									while not stack.is_empty() and stack.peek() != "(":
												postfix.append(stack.pop()				)
									stack.pop()
						else:
									while not stack.is_empty() and precedence(__lowercase				) <= precedence(stack.peek()				):
												postfix.append(stack.pop()				)
									stack.push(__lowercase				)
			while not stack.is_empty():
						postfix.append(stack.pop()				)
			return " ".join(__lowercase				)


if __name__ == "__main__":
			from doctest import testmod

			testmod()
			_lowerCamelCase :       Tuple     					=    '''a+b*(c^d-e)^(f+g*h)-i'''

			print('''Infix to Postfix Notation demonstration:\n''')
			print('''Infix notation: ''' + expression)
			print('''Postfix notation: ''' + infix_to_postfix(expression))

import random
import sys

_lowerCamelCase :       Tuple     					=    '''ABCDEFGHIJKLMNOPQRSTUVWXYZ'''






def  a_	( )				->						None:
			_snake_case						=    input('Enter message: '				)
			_snake_case						=    'LFWOAYUISVKMNXPBDCRJTQEGHZ'
			_snake_case						=    input('Encrypt/Decrypt [e/d]: '				)

			check_valid_key(__lowercase				)

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

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






def  a_	( __lowercase     :			str				)				->						None:
			_snake_case						=    list(__lowercase				)
			_snake_case						=    list(__lowercase				)
			key_list.sort()
			letters_list.sort()

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






def  a_	( __lowercase     :			str ,      __lowercase     :			str				)				->						str:
			return translate_message(__lowercase ,      __lowercase ,      'encrypt'				)






def  a_	( __lowercase     :			str ,      __lowercase     :			str				)				->						str:
			return translate_message(__lowercase ,      __lowercase ,      'decrypt'				)






def  a_	( __lowercase     :			str ,      __lowercase     :			str ,      __lowercase     :			str				)				->						str:
			_snake_case						=    ''
			_snake_case						=    LETTERS
			_snake_case						=    key

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

			for symbol in message:
						if symbol.upper() in chars_a:
									_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  a_	( )				->						str:
			_snake_case						=    list(__lowercase				)
			random.shuffle(__lowercase				)
			return "".join(__lowercase				)


if __name__ == "__main__":
			main()