通过对“2-3树”的改造，形成一种新的数据结构；即平衡树（BT）。

Through changing 2-3 tree, a new data structure is formed-BT.

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松鼠从一棵树跳到另一棵树时，是什么帮助它保持平衡？

What helps the squirrel to balance when jumping from tree to tree?

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红黑树是一个自平衡的二叉查找树。

Red-black tree is a self-balancing binary search tree.

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一种阵列已经是一个平衡的二叉树，它是真的吗？

An array is already a balanced B-tree, it is true?

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注意：要注意平衡，否则圣诞树很容易倒的。

Note: To balance the attention, otherwise Christmas tree is easy grade.

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给出一个二叉树，判断它高度是不是平衡的。

Given a binary tree, determine if it is height-balanced.

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判断一棵树是否为平衡二叉树。

Given a binary tree, determine if it is height-balanced.

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我们必须种更多的树来保持生态平衡。

We must plant more trees and keep the balance of nature.

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他走起路来好象鼻子上平衡着家族树似的。

He walks as if balancing the family tree on his nose.

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他走起路来好象鼻子上平衡着家族树似的。

He walks as if balancing the family tree on his nose.

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