题目描述：The gray code is a binary numeral system
where two successive values differ in only one bit.Given a non-negative
integernrepresenting the total n...
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其他好文 时间：
2014-05-26 21:30:04
阅读次数：
296
日之前点击链接进行网上报名，只有报名成功的同学才能参加选拔赛。
问题 F: Graph
时间限制: 1 Sec 内存限制: 128 MB
提交: 30 解决: 5
[提交][状态][论坛]
题目描述
Your task is to judge whether a regular polygon can be drawn only by straightedge...
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其他好文 时间：
2014-05-26 05:29:16
阅读次数：
389
题目一：
Given a binary tree containing digits from 0-9 only, each root-to-leaf
path could represent a number.
An example is the root-to-leaf path 1->2->3 which represents the number 123.
Fin...
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其他好文 时间：
2014-05-26 04:06:41
阅读次数：
248
It seems like the year of 2013 came only yesterday. Do you know a curious fact? The year of 2013 is the first year after the old 1987 with only distinct digits.
Now you are suggested to solve the f...
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其他好文 时间：
2014-05-24 21:52:34
阅读次数：
320
最近一直在看并发编程网，这篇文章先记录下这个地方的理解。
上下文环境移步CopyOnWriteArrayList类set方法疑惑？
[java] view
plaincopyprint?
/** The array, accessed only via getArray/setArray. */
private volatile tr...
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其他好文 时间：
2014-05-22 07:11:36
阅读次数：
268
usingandusing namespacehave validity only in
the same block in which they are stated or in the entire source code file if
they are used directly in th...
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其他好文 时间：
2014-05-22 02:08:48
阅读次数：
268
Given a string, determine if it is a
palindrome, considering only alphanumeric characters and ignoring cases.For
example,"A man, a plan, a canal: Pana...
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其他好文 时间：
2014-05-21 21:20:54
阅读次数：
291
【题目】
Given a collection of candidate numbers (C) and a target number (T), find all unique combinations in C where the candidate numbers sums to T.
Each number in C may only be used once in the combination.
Note:
All numbers (including target) will be ...
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其他好文 时间：
2014-05-21 15:55:25
阅读次数：
259
VirtualBox的提供了四种网络接入模式，它们分别是：1、NAT
网络地址转换模式(NAT,Network Address Translation)2、Bridged Adapter 桥接模式3、Internal
内部网络模式4、Host-only Adapter 主机模式第一种 NAT模式解释...
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其他好文 时间：
2014-05-21 04:05:58
阅读次数：
292
【题目】
Write a program to solve a Sudoku puzzle by filling the empty cells.
Empty cells are indicated by the character '.'.
You may assume that there will be only one unique solution.
A sudoku puzzle...
...and its solution numbers marked in red.
...
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其他好文 时间：
2014-05-20 17:07:34
阅读次数：
335
