
'''simple docstring'''





class     a :




				def __init__(				self						:					Dict   ):
										snake_case							:  List[str]			=     []
										snake_case							:  Any			=     0
										snake_case							:  Union[str, Any]			=     0




				def __str__(				self						:					Dict   ):
										snake_case							:  Optional[Any]			=     '''<''' + str(self.entries   )[1:-1] + '''>'''
										return printed




				def 						__snake_case				(				self						:					Optional[int],     SCREAMING_SNAKE_CASE_						:					Union[str, Any]   ):
										self.entries.append(SCREAMING_SNAKE_CASE_   )
										snake_case							:  int			=     self.length + 1




				def 						__snake_case				(				self						:					Dict   ):
										snake_case							:  Tuple			=     self.length - 1
										snake_case							:  Optional[int]			=     self.entries[self.front]
										# self.front-=1
										# self.entries = self.entries[self.front:]
										snake_case							:  List[Any]			=     self.entries[1:]
										return dequeued




				def 						__snake_case				(				self						:					Tuple,     SCREAMING_SNAKE_CASE_						:					Dict   ):
										for _ in range(SCREAMING_SNAKE_CASE_   ):
																self.put(self.get()   )




				def 						__snake_case				(				self						:					List[str]   ):
										return self.entries[0]




				def 						__snake_case				(				self						:					int   ):
										return self.length








from .balanced_parentheses import balanced_parentheses
from .stack import Stack







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







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


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

      testmod()
      __UpperCAmelCase			:  Optional[int]										=				"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))






