



'''simple docstring'''



from .balanced_parentheses import balanced_parentheses
from .stack import Stack


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


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


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

				testmod()
				_lowercase       :						str						="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))







'''simple docstring'''


from __future__ import annotations







def     SCREAMING_SNAKE_CASE(	UpperCamelCase ,UpperCamelCase ,UpperCamelCase ,UpperCamelCase	)     ->     int:

	# Base Case
	if counter == 0 or capacity == 0:
		return 0

	# If weight of the nth item is more than Knapsack of capacity,
	#   then this item cannot be included in the optimal solution,
	# else return the maximum of two cases:
	#   (1) nth item included
	#   (2) not included
	if weights[counter - 1] > capacity:
		return knapsack(UpperCamelCase ,UpperCamelCase ,UpperCamelCase ,counter - 1	)
	else:
		UpperCAmelCase_		:   int													=       capacity - weights[counter - 1]
		UpperCAmelCase_		:   Optional[int]													=       values[counter - 1] + knapsack(
		    UpperCamelCase ,UpperCamelCase ,UpperCamelCase ,counter - 1	)
		UpperCAmelCase_		:   Any													=       knapsack(UpperCamelCase ,UpperCamelCase ,UpperCamelCase ,counter - 1	)
		return max(UpperCamelCase ,UpperCamelCase	)


if __name__ == "__main__":
						import doctest

						doctest.testmod()






