Python 实现二叉树
#-*-codding:utf-8-*-classNode(object):"""节点"""def__init__(self,item):self.elem=itemself.lchild=Noneself.rchild=NoneclassTree(object):"""二叉树"""def__init__(self):self.root=Nonedefadd(self,item):node=Nod
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