class BSTSet(Set):
def __init__(self):
self.bst = BST()
# 判断集合是否为空
def is_empty(self):
return self.bst.is_empty()
# 添加 ele 至集合
def add(self, ele):
self.bst.add(ele)
# 是否包含元素 ele
def contains(self, ele):
return self.bst.contains(ele)
# 从集合内删除 ele
def remove(self, ele):
self.remove(ele)
# 获取集合大小
def get_size(self):
return self.bst.get_size()
