二叉树 

 1 class node(object):
 2     def __init__(self,elem=-1,lchild=None,rchild=None):
 3         self.elem=elem
 4         self.lchild = lchild
 5         self.rchild =rchild
 6 
 7 
 8 class Tree(object):
 9     def __init__(self,root=None):
10         self.root=root
11 
12     def add(self,elem):
13         nodd =node(elem)
14         if self.root==None:
15             self.root =nodd
16         else:
17             queue =[]
18             queue.append(self.root)
19 
20         while queue:
21             cur = queue.pop(0)
22             if cur.lchild==None:
23                 cur.lchild = node
24                 return
25             elif cur.rchild==None:
26                 cur.rchild=node
27                 return
28             else:
29                 queue.append(cur.lchild)
30                 queue.append(cur.rchild)

 

posted @ 2019-05-08 15:34  竹心_兰君  阅读(186)  评论(0)    收藏  举报