题目：An AVL tree is a self-balancing binary search tree. In an AVL tree, the heights of the two child subtrees of any node differ by at most one; if at ...
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其他好文 时间：
2015-04-06 11:15:43
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148
1. 利用magrittr包进行管道操作
很多情况下，管道操作符可以很大程度的简化代码，并且使其更加直观、易读、易懂，下面就简单说明了useR2014上颇受R用户喜爱的magrittr包。
the pipe operatoris one (if not THE) most important innovation introduced, this year, to the Recos...
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编程语言 时间：
2015-04-06 08:59:44
阅读次数：
287
题目：
Say you have an array for which the ith element is the price of a given stock on day i.If you were only permitted to complete at most one transaction (ie, buy one and sell one share of the stock),...
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其他好文 时间：
2015-04-05 23:37:03
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153
一： Plus One
题目：
Given a non-negative number represented as an array of digits, plus one to the number.
The digits are stored such that the most significant digit is at the head of the list.
...
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其他好文 时间：
2015-04-05 21:59:23
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159
Given a non-negative number represented as an array of digits, plus one to the number.
The digits are stored such that the most significant digit is at the head of the list.
class Solution {
p...
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其他好文 时间：
2015-04-05 17:33:17
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89
A sweet little monster Om Nom loves candies very much. One day he found himself in a rather tricky situation that required him to think a bit in order to enjoy candies the most. Would you succeed with...
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其他好文 时间：
2015-04-05 14:40:31
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171
E - Just a Hook
Time Limit:2000MS Memory Limit:32768KB 64bit IO Format:%I64d & %I64u
Submit Status Practice
Description
In the game of DotA, Pudge’s meat hook is actually the most horrible thing...
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其他好文 时间：
2015-04-05 09:12:34
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293
DescriptionYou may have wondered why most extraterrestrial life forms resemble humans, differing by superficial traits such as height, colour, wrinkles, ears, eyebrows and the like. A few bear no human...
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编程语言 时间：
2015-04-04 12:22:20
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621
Xiangqi
Problem Description
Xiangqi is one of the most popular two-player board games in China. The game represents a battle between two armies with the goal of capturing the enemy’s “genera...
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其他好文 时间：
2015-04-04 09:11:41
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191
AsyncTask是android自带的一个异步处理线程
它带了很多参数
都很方便使用
但是有一些注意事项
1:
官网说明： AsyncTasks should ideally be used for short operations (a few seconds at the most.) If you need to keep threads running f...
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其他好文 时间：
2015-04-04 06:52:53
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177
