def __init__(self, capacity=None):
"""
:param capacity: 栈的容积
"""
if capacity is None:
self.array = Array()
else:
self.array = Array(capacity)
def __init__(self, capacity=None, arr=None):
if arr is not None:
# 构建一个大根堆，通过heapify操作
self._heapify(arr)
return
if capacity is None:
self._data = Array()
else:
self._data = Array(capacity)
def __init__(self, capacity=None):
if capacity is None:
self.array = Array()
else:
self.array = Array(capacity)