zippera
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如何根据边构建二叉树?

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  •   zippera · Aug 21, 2015 via iPhone · 2236 views
    This topic created in 4026 days ago, the information mentioned may be changed or developed.
    给定节点个数 13 ,边数 12 ,并以点对的形式给出 12 个边,如
    1 2 4 5 1 4 …

    给出边的顺序是无序的。对左右子树的顺序不做要求,如上面的 2 可以建成 1 的左子树或右子树。
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