二叉树遍历的非递归算法相对于递归算法，减少了函数调用等开销，具有性能优势。

Compared with recursive algorithm for binary tree traversing, non-recursive algorithm reduces expenses of function calls, gains performance advantage.

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利用递归和非递归实现二叉树的中序遍历，利用队列实现二叉树的层次遍历。

Recursive and non recursive implementation of binary tree traversal, the use of queues to achieve the level of binary tree traversal.

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利用递归和非递归实现二叉树的中序遍历，利用队列实现二叉树的层次遍历。

Recursive and non recursive implementation of binary tree traversal, the use of queues to achieve the level of binary tree traversal.

youdao