/**
* Definition for a binary tree node.
* struct TreeNode {
* int val;
* TreeNode *left;
* TreeNode *right;
* TreeNode(int x) : val(x), left(NULL), right(NULL) {}
* };
*/
class...
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其他好文 时间:
2015-07-02 19:31:46
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1. Question判断一个二叉树是否是对称的。Given a binary tree, check whether it is a mirror of itself (ie, symmetric around its center).For example, this binary tree i...
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其他好文 时间:
2015-06-24 23:54:40
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183
#83 Remove Duplicates from Sorted List
Given a sorted linked list, delete all duplicates such that each element appear only once.
For example,
Given 1->1->2, return 1->2.
Given 1->1->2->3->3...
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其他好文 时间:
2015-06-24 19:01:53
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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:
2015-06-21 14:37:26
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145
简介有一个平衡二叉树:红黑树(Red Black Tree),由红黑树Rudolf Bayer至1972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:红黑树。红...
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其他好文 时间:
2015-06-20 11:52:39
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240
Description:Given 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:
2015-06-19 18:09:13
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81
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:
2015-06-19 10:12:00
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128
本文假设你已经有一些基本的Xcode开发经验, 并注册了iOS开发者账号.相关基础加密算法现代密码学中, 主要有两种加密算法:对称密钥加密和公开密钥加密.对称密钥加密对称密钥加密(Symmetric-key algorithm)又称为对称加密, 私钥加密, 共享密钥加密.这类算法在加密和解密时使用相...
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移动开发 时间:
2015-06-18 21:31:01
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298
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...
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其他好文 时间:
2015-06-12 10:13:12
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166
有个问题,就是不能和same tree一样光看root 做recursive而是必须比较左右节点,因为对称是指整个树否则就会出现 1 2 2 # 3 3public class Solution { public boolean isSymmetric(TreeNode root) { ...
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其他好文 时间:
2015-06-10 06:31:42
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104