def OP2BTree(lista, BTree):
if not (lista is None or BTree is None):
for item in lista:
aux = BTree.get(item)
if aux == None:
BTree.insert(item)
return str(BTree)
def OP3BTree(lista, BTree):
if not (lista is None or BTree is None):
for item in lista:
aux = BTree.get(item)
if aux != None:
lista.remove(item)
return str(lista)
def OP1BTree(lista, BTree):
if not (lista is None or BTree is None):
inter = []
for item in lista:
aux = BTree.get(item)
if aux == item:
inter.append(item)
return inter