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树中是否存在路径和为 sum leecode java
https://oj.leetcode.com/problems/path-sum//** * Definition for binary tree * public class TreeNode { * int val; * TreeNode left; * TreeNod...
分类:编程语言   时间:2014-07-01 13:09:20    阅读次数:198
leetcode 题解:Binary Tree Level Order Traversal (二叉树的层序遍历)
题目:Given a binary tree, return thelevel ordertraversal of its nodes' values. (ie, from left to right, level by level).For example:Given binary tree{3,...
分类:其他好文   时间:2014-07-01 12:44:09    阅读次数:199
Leetcode:Gray Code 格雷码
Gray Code:The gray code is a binary numeral system where two successive values differ in only one bit.Given a non-negative integer n representing the ...
分类:其他好文   时间:2014-07-01 12:42:16    阅读次数:192
leetcode题解:Tree Level Order Traversal II (二叉树的层序遍历 2)
题目:Given a binary tree, return thebottom-up level ordertraversal of its nodes' values. (ie, from left to right, level by level from leaf to root).For ...
分类:其他好文   时间:2014-07-01 12:26:07    阅读次数:215
leecode 树是否是平衡树 java
https://oj.leetcode.com/problems/validate-binary-search-tree/1.中序遍历是否有序/** * Definition for binary tree * public class TreeNode { * int val; * ...
分类:编程语言   时间:2014-07-01 12:20:06    阅读次数:173
UVa 575 Skew Binary 歪斜二进制
呵呵,这个翻译还是很直白的嘛,大家意会就好。第一次看到这个高大上题目还是有点小害怕的,还好题没有做过深的文章。只要按照规则转化成十进制就好了,而且题目本身也说了最大不超过一个int的范围(2^31-1 ==2147483647)。直接位运算就好了。Skew BinaryWhen a number i...
分类:其他好文   时间:2014-07-01 10:13:16    阅读次数:219
关于curl: (2) Failed Initialization
一开始是因为curl无法访问https网上说,要重新编译安装curl 我就下载.. ./configure make make install 结果出现 curl: (2) Failed Initialization 好吧,我整个人都跪了. 满世界找原因... 找到这个  It means that the curl binary is picking ...
分类:其他好文   时间:2014-07-01 08:07:03    阅读次数:545
Flatten Binary Tree to Linked List
题目 Given a binary tree, flatten it to a linked list in-place. For example, Given 1 / 2 5 / \ 3 4 6 The flattened tree should look lik...
分类:其他好文   时间:2014-07-01 08:03:10    阅读次数:127
Binary Tree Preorder Traversal
题目 Given a binary tree, return the preorder traversal of its nodes' values. For example: Given binary tree {1,#,2,3}, 1 2 / 3 return [1,2,3]. Note: Recu...
分类:其他好文   时间:2014-07-01 07:06:56    阅读次数:177
Binary Tree Postorder Traversal
题目 Given a binary tree, return the postorder traversal of its nodes' values. For example: Given binary tree {1,#,2,3}, 1 2 / 3 return [3,2,1]. Note: Rec...
分类:其他好文   时间:2014-07-01 07:06:11    阅读次数:214
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