原题地址：https://oj.leetcode.com/problems/path-sum/题意：Given
a binary tree and a sum, determine if the tree has a root-to-leaf path such that
adding up all...
分类：
编程语言 时间：
2014-05-26 18:37:11
阅读次数：
295
Agri-NetTime Limit: 1000MSMemory Limit:
10000KTotal Submissions: 37109Accepted: 14982DescriptionFarmer John has been
elected mayor of his town! One of...
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其他好文 时间：
2014-05-26 02:40:43
阅读次数：
236
一、概念CARP:CompositionAggregation
Principle合成聚合复用原则，尽量使用合成/聚合，尽量不使用类继承。合成聚合是“has a”的关系，而继承是“is
a”的关系。由于继承是一中强耦合的结构，父类变，子类必变。所以不是“is a”关系，我们一般不要用继承。优先使用合...
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其他好文 时间：
2014-05-26 01:31:47
阅读次数：
263
修改php.ini就可以了。1. 在PHP.ini中搜索关键字 :
allow_call_time_pass_reference 没有的自行建立。2. 将 Off 改成 On ,Web
Server重起就OK了~allow_call_time_pass_reference = Off 变成 allo...
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Web程序 时间：
2014-05-25 19:40:31
阅读次数：
265
Kitahara Haruki has bought n apples for Touma Kazusa and Ogiso Setsuna. Now he wants to divide all the apples between the friends.
Each apple weights 100 grams or 200 grams. Of course Kitahara Haru...
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其他好文 时间：
2014-05-25 09:01:36
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174
ADB启不来，报"The connection to adb is down, and a severe error has occured" 检查任务管理器，也没看到adb.exe. 尝试手工启动.
C:\Ndk\adt-bundle-window\sdk\platform-tools>adb kill-server
* server not running *
C:\Ndk\adt-...
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数据库 时间：
2014-05-25 07:32:54
阅读次数：
310
Kuriyama Mirai has killed many monsters and got many (namely n) stones. She numbers the stones from 1 to n.
The cost of the i-th stone is vi.
Kuriyama Mirai wants to know something about these sto...
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其他好文 时间：
2014-05-25 07:24:48
阅读次数：
315
题目如下：
Problem D: Hartals
A social research organization has determined a simple set of parameters to simulate the behavior of the political parties of our country. One of the ...
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其他好文 时间：
2014-05-24 23:10:01
阅读次数：
317
【题目】
Find the contiguous subarray within an array (containing at least one number) which has the largest sum.
For example, given the array [?2,1,?3,4,?1,2,1,?5,4],
the contiguous subarray [4,?1,2,1] has the largest sum = 6.
【题意】
给定一个数组，找出和最大的子数组，返回...
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其他好文 时间：
2014-05-24 22:19:17
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260
A bit is a binary digit, taking a logical value of either 1 or 0 (also referred to as "true" or "false" respectively). And every decimal number has a binary representation which is actually a series o...
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其他好文 时间：
2014-05-24 17:19:41
阅读次数：
335
