stk._Push(item)
elif ops.get(item) < ops.get(stk._getLast()):
for i in range(stk._getLen()):
que._Push(stk._Pop())
stk._Push(item)
elif ops.get(item) == ops.get(stk._getLast()):
que._Push(stk._Pop())
stk._Push(item)
for item in range(stk._getLen()):
que._Push(stk._Pop())
print('posfijo: ')
que._Print()
res = Stack()
for i in range(que._getLen()):
item = que._Pop()
if item.isnumeric():
res._Push(item)
elif item in ops:
b = int(res._Pop())
a = int(res._Pop())
if item == '^':
res._Push(pow(a, b))
elif item == 'R':
res._Push(pow(a, 1 / b))
elif item == '*':
res._Push(a * b)
