如果按层次遍历,存下每一层的点,会MLE。1、递归版本:关键还是子问题的划分。 1 /** 2 * Definition for binary tree 3 * struct TreeNode { 4 * int val; 5 * TreeNode *left; 6 * ...
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其他好文 时间:
2014-07-07 13:58:07
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181
题目:Symmetric TreeGiven a binary tree, check whether it is a mirror of itself (ie, symmetric around its center).For example, this binary tree is symmet...
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其他好文 时间:
2014-06-20 18:44:41
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279
Given a binary tree, check whether it is a mirror of itself (ie, symmetric around its center).For example, this binary tree is symmetric: 1 / \ ...
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其他好文 时间:
2014-06-18 13:29:31
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214
Given a binary tree, check whether it is a mirror of itself (ie, symmetric around its center).
For example, this binary tree is symmetric:
1
/ 2 2
/ \ / 3 4 4 3
But the f...
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其他好文 时间:
2014-06-15 19:49:35
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176
Symmetric TreeGiven a binary tree, check whether it is a mirror of itself (ie, symmetric around its center).For example, this binary tree is symmetric...
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其他好文 时间:
2014-06-15 18:55:36
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188
Given a binary tree, check whether it is a
mirror of itself (ie, symmetric around its center).For example, this binary tree
is symmetric: 1 / \ ...
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其他好文 时间:
2014-06-10 11:51:42
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213
最近用java进行一个blowfish的加密算法,但是在我们的eclipse上报出Illegal key
size的错误。google后发现原因是:ymmetricDS加密symmetric.properties中数据库密码产生"Illegal Key
Size"错误根据symmetricDS的gu...
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编程语言 时间:
2014-06-08 18:41:23
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324
题目
Given a binary tree, check whether it is a mirror of itself (ie, symmetric around its center).
For example, this binary tree is symmetric:
1
/ 2 2
/ \ / 3 4 4 3
...
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其他好文 时间:
2014-06-08 18:12:04
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248
介绍还有一种平衡二叉树:红黑树(Red Black Tree),红黑树由Rudolf
Bayer于1972年发明,当时被称为平衡二叉B树(symmetric binary B-trees),1978年被Leonidas J.
Guibas和Robert Sedgewick改成一个比較摩登的名字:红黑...
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其他好文 时间:
2014-06-02 20:05:23
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375
【题目】
Given a binary tree, check whether it is a mirror of itself (ie, symmetric around its center).
For example, this binary tree is symmetric:
1
/ 2 2
/ \ / 3 4 4 3
But the following is not:
1
/ 2 2
\ 3 3
No...
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其他好文 时间:
2014-06-02 10:56:14
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237