题目:
Given a linked list, swap every two adjacent nodes and return its head.
For example,
Given 1->2->3->4, you should return the list as 2->1->4->3.
Your algorithm should use only constant...
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其他好文 时间:
2015-01-29 17:37:16
阅读次数:
111
Implement regular expression matching with support for '.' and '*'.
'.' Matches any single character.
'*' Matches zero or more of the preceding element.
The matching should cover the entire input st...
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其他好文 时间:
2015-01-29 14:39:45
阅读次数:
107
Implement regular expression matching with support for ‘.’ and ‘*’.
‘.’ Matches any single character.
‘*’ Matches zero or more of the preceding element.
The matching should cover the...
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其他好文 时间:
2015-01-29 12:43:39
阅读次数:
167
There are two sorted arrays A and B of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexity should be O(log (m+n)).
用二分的方法求合并数组的中值。用找第k大的值来求,不断去掉较小的一半,...
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其他好文 时间:
2015-01-29 12:43:29
阅读次数:
175
public class TestMemcached {
public static void main(String[] args) {
// memcached should be running on port 11211 but NOT on 11212
BasicConfigurator.configure();
String...
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编程语言 时间:
2015-01-29 10:29:38
阅读次数:
199
Givenn, generate all structurally uniqueBST's(binary search trees) that store values 1...n.For example,Givenn= 3, your program should return all 5 uni...
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其他好文 时间:
2015-01-28 23:56:50
阅读次数:
231
机器学习基础
[维基]《List of machine learning concepts》机器学习概念集锦,统观机器学习全局的好材料。要好好利用维基这个大宝库——尤其是人工整理的知识结构和体系,比细节更有价值!《FAQ: What machine
learning book should I start with? ? Ben Mabey》 机器学习入门该看什么书?文章介绍了基本经典的...
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其他好文 时间:
2015-01-28 16:03:24
阅读次数:
194
Given an integer n, return the number of trailing zeroes in n!.
Note: Your solution should be in logarithmic time complexity.
题目是非常简单的,计算一个数字递归相乘后末尾0的个数
在相乘出现2*5才有可能出现0,2一般是足够的,主要是5的个数,因为是阶乘,...
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其他好文 时间:
2015-01-28 13:06:21
阅读次数:
123
编译的时候,发生如下错误:class file has wrong version 50.0, should be 49.0究其原因:由于引入的第三方jar包的编译器版本与当前编译器版本不一致造成。这个类是在JDK1.6的环境下编译的,把他放在JDK1.5环境的服务器下发生以上错误,只要将这个类重新...
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其他好文 时间:
2015-01-28 11:03:21
阅读次数:
143
今天学习了使用 HTTP协议,从Android客户端往Tomcat服务器端以GET发送请求,途中无意中发现自己写的Handler类被Android提示:This Handler class should be static or leaks might occur. 往google上type,发.....
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移动开发 时间:
2015-01-28 06:08:26
阅读次数:
157