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LeetCode——Balanced Binary Tree
Given a binary tree, determine if it is height-balanced. For this problem, a height-balanced binary tree is defined as a binary tree in which the depth of the two subtrees of every node never diffe...
分类:其他好文   时间:2014-06-19 11:23:05    阅读次数:204
pig使用入门3-UDF的使用
1、Working with UDF(user defined function) pig能够支持两种类型的UDFs:eval和load/store, 其中load/store的自定义函数主要是用来加载和保存特定的数据格式; eval自定义函数主要用来进行常规的数据转换。1.1 eval 如...
分类:其他好文   时间:2014-06-18 23:43:45    阅读次数:495
忘记导入struts2-xxx-plugin-x.x.x.jar导致服务器启动报Unable to load configuration.Caused by: Parent package is not defined: xxx-default
今天做的一个Struts2+MyFaces(JSF)+Spring的应用,为了使用JSF,我的struts.xml中使用了如下代码 ...
分类:其他好文   时间:2014-06-18 16:54:18    阅读次数:441
javascript 变量/函数 提升
1.JavaScript hoisting(变量/函数 提升) 以下实验都是通过firefox的Console做的实验. console.log(a); ReferenceError: a is not defined console.log(a); 但是,如果在后面加上变量的定义...
分类:编程语言   时间:2014-06-18 12:39:33    阅读次数:223
Error creating bean with name 'memcachedClient'...java.lang.OutOfMemoryError
1,Tomcat启动报错如下:Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'memcachedClient' defined in file [/usr/local/apache-tomcat-6.0.37_6500/webapps/trade...
分类:编程语言   时间:2014-06-15 14:12:10    阅读次数:283
Message: u'$ is not defined' ; Stacktrace
status.html status status ...
分类:其他好文   时间:2014-06-15 08:41:16    阅读次数:188
OpenFlow学习笔记
Software-Defined Networking Network intelligence is (logically) centralized in software-based SDN controllers network operators and administrators can...
分类:其他好文   时间:2014-06-12 20:40:39    阅读次数:647
Leetcode | Balanced Binary Tree
Given a binary tree, determine if it is height-balanced.For this problem, a height-balanced binary tree is defined as a binary tree in which the depth...
分类:其他好文   时间:2014-06-12 08:10:28    阅读次数:194
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