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TCP Retransmission
When the sending side sees a duplicate ACK, it knows that the other side must have received a packet out of order, which suggests that an earlier packet might have been lost. Since it is also p...
分类:其他好文   时间:2015-07-08 16:37:40    阅读次数:158
【android】在Eclipse在联想引jar包源代码
(前提是你有jar包源代码!!)、确保Referenced LIbraies下已经有该jar包,否则的话,右击该jar包选build path->add to build path。二、右键本project选properties后,在左側选java build path,然后在右边选项卡选order...
分类:移动开发   时间:2015-07-08 14:34:54    阅读次数:152
Android studio was unable to create a local connection in order...
以管理员身份运行cmd 输入netsh winsock reset 重启电脑
分类:移动开发   时间:2015-07-08 14:31:54    阅读次数:248
pig询问top k,每个返回hour和ad_network_id最大的两个记录(SUBSTRING,order,COUNT_STAR,limit)
pig里面有一个TOP功能。我不知道为什么用不了。有时间去看看pig源代码。SET job.name 'top_k';SET job.priority HIGH;--REGISTER piggybank.jar;REGISTER wizad-etl-udf-0.1.jar;--DEFINE Sequ...
分类:Web程序   时间:2015-07-08 14:30:14    阅读次数:137
newID()和RAND()
在SQL语言中,随机函数NEWID和rand()用法并不相同,下面就将为您示例分析这两个随机函数的区别,供您参考,希望对您深入理解SQL函数能起到作用。例句:SELECT * FROM TABLENAME ORDER BY NEWID() --随机排序SELECT TOP 10 * FROM TAB...
分类:其他好文   时间:2015-07-08 14:29:47    阅读次数:128
LeetCode90:Subsets II
Given a collection of integers that might contain duplicates, nums, return all possible subsets.Note: Elements in a subset must be in non-descending order. The solution set must not contain duplicate...
分类:其他好文   时间:2015-07-08 12:57:07    阅读次数:88
Oracle DBA常用SQL
监控SQL 1.监控事例的等待: select event,sum(decode(wait_time,0,0,1)) prev, sum(decode(wait_time,0,1,0)) curr,count(*) from v$session_wait group by event order b...
分类:数据库   时间:2015-07-08 12:22:57    阅读次数:222
Binary Tree Level Order Traversal II
同样,使用两个队列进行层间循环和层内循环。最后使用一个栈进行转置。PS:特别注意的是,对于vector的使用,在赋值的阶段会发生内存报错的情况:vector vec1;vec1[0]=1直接使用下标赋值是错误的,应使用的是push_back()函数进行数值添加。而,在调用已经赋值的变量时,可以使用下...
分类:其他好文   时间:2015-07-08 12:21:56    阅读次数:97
LeetCode60:Permutation Sequence
The set [1,2,3,…,n] contains a total of n! unique permutations.By listing and labeling all of the permutations in order, We get the following sequence (ie, for n = 3):1 “123” 2 “132” 3 “213”...
分类:其他好文   时间:2015-07-08 10:57:54    阅读次数:512
Java正则表达式示例
import java.util.regex.Matcher; import java.util.regex.Pattern;public class RegexMatches { public static void main( String args[] ){ // 按指定模式在字符串查找 String line = "This order was placed f...
分类:编程语言   时间:2015-07-08 09:35:09    阅读次数:140
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