2018-07-08 23:28:29 +08:00
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''' mbinary
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#########################################################################
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# File : binaryTree.py
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# Author: mbinary
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# Mail: zhuheqin1@gmail.com
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# Blog: https://mbinary.coding.me
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# Github: https://github.com/mbinary
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# Created Time: 2018-05-19 23:07
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# Description:
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#########################################################################
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'''
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from functools import total_ordering
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@total_ordering
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class node:
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def __init__(self,val,left=None,right=None,freq = 1):
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self.val=val
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self.left=left
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self.right=right
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self.freq = freq
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def __lt__(self,nd):
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return self.val<nd.val
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def __eq__(self,nd):
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return self.val==nd.val
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def __repr__(self):
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return 'node({})'.format(self.val)
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class binaryTree:
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def __init__(self):
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self.root=None
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def add(self,val):
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def _add(nd,newNode):
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if nd<newNode:
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if nd.right is None:nd.right = newNode
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else:_add(nd.right,newNode)
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elif nd>newNode:
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if nd.left is None:nd.left = newNode
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else : _add(nd.left,newNode)
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else:nd.freq +=1
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_add(self.root,node(val))
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def find(self,val):
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prt= self._findPrt(self.root,node(val),None)
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if prt.left and prt.left.val==val:
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return prt.left
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elif prt.right and prt.right.val==val:return prt.right
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else :return None
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def _findPrt(self,nd,tgt,prt):
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if nd==tgt or nd is None:return prt
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elif nd<tgt:return self._findPrt(nd.right,tgt,nd)
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else:return self._findPrt(nd.left,tgt,nd)
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def delete(self,val):
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prt= self._findPrt(self.root,node(val),None)
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if prt.left and prt.left.val==val:
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l=prt.left
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if l.left is None:prt.left = l.right
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elif l.right is None : prt.left = l.left
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else:
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nd = l.left
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while nd.right is not None:nd = nd.right
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nd.right = l.right
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prt.left = l.left
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elif prt.right and prt.right.val==val:
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r=prt.right
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if r.right is None:prt.right = r.right
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elif r.right is None : prt.right = r.left
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else:
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nd = r.left
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while nd.right is not None:nd = nd.right
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nd.right = r.right
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prt.left = r.left
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def preOrder(self):
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def _p(nd):
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if nd is not None:
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print(nd)
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_p(nd.left)
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_p(nd.right)
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_p(self.root)
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if __name__=="__main__":
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t = binaryTree()
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for i in range(10):
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t.add((i-4)**2)
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t.preOrder()
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