def lmr_f(self,root):
stack=[]
while root is not None or len(stack)!=0:
if root is not None:
stack.append(root)
root=root.left
else:
root=stack.pop()
result2.append(root.val)
root=root.right
stack=[]
while root is not None or len(stack)!=0:
if root is not None:
stack.append(root)
root=root.left
else:
root=stack.pop()
result2.append(root.val)
root=root.right
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05-11 11:58
中国矿业大学 Java 
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