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循环结构
前面已经说过选择结构了其实他和for相差不是太大,现在就来说说循环结构。循环结构有三种形式!1 for 2.while 3.do while 这三种都可以循环,不过他们之间还是有区别的,for和while是要先验证条件,如果条件满足才执行循环体,而后者do while是不管条件是否满足都要执...
分类:其他好文   时间:2014-05-10 20:03:50    阅读次数:326
sed
sed‘s/^/\//g‘4行首增加指定字符提取网页中的播放地址:#!/bin/bash printf"enteryourdir:" readdir echo"$dirisxx" cd$dir echo`pwd` forfilein`ls.` do if[-d$file];then echo$file cd$file echo`pwd` tree`pwd`|grepplay|sed‘s/.*//g‘>11 tree`pwd`|grepplay|sed‘s/.*//g..
分类:其他好文   时间:2014-05-03 00:53:15    阅读次数:336
HDFS追本溯源:租约,读写过程的容错处理及NN的主要数据结构
Lease 的机制:hdfs支持write-once-read-many,也就是说不支持并行写,那么对读写的互斥同步就是靠Lease实现的。Lease说白了就是一个有时间约束的锁。客户端写文件时需要先申请一个Lease,对应到namenode中的LeaseManager,客户端的client name就作为一个lease的holder,即租约持有者。LeaseManager起什么作用呢? 读写过程的容错是怎么做的?数据块是如何复制的?数据块的恢复机制?本文都有涉及。...
分类:其他好文   时间:2014-05-02 23:22:14    阅读次数:450
codeforces A. Shaass and Oskols 题解
Shaass has decided to hunt some birds. There are n horizontal electricity wires aligned parallel to each other. Wires are numbered 1 to n from top to bottom. On each wire there are some oskols sitti...
分类:其他好文   时间:2014-05-02 20:48:26    阅读次数:462
[数据结构暴力] zoj 3749 Chameleon
题目链接: http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode=3749 Chameleon Time Limit: 6 Seconds      Memory Limit: 65536 KB Given n groups of integers(all the integers are distin...
分类:其他好文   时间:2014-05-02 19:06:34    阅读次数:447
Lua--for循环控制结构
“参考Lua游戏开发实践指南” Lua提供两种控制结构(数字型和通用型)--Lua中的for语句的索引是从1开始的 数字型: 一个简单的示例如下1 for indx = 1, 10 do2 print(indx)3 end do关键字标记程序块的开始,end标记程序块的结束。 ...
分类:其他好文   时间:2014-05-02 17:26:51    阅读次数:702
leetcode: Search a 2D Matrix
Write an efficient algorithm that searches for a value in anmxnmatrix. This matrix has the following properties:Integers in each row are sorted from l...
分类:其他好文   时间:2014-05-02 10:41:53    阅读次数:267
UVA 之11300 - Spreading the Wealth
Problem A Communist regime is trying to redistribute wealth in a village. They have have decided to sit everyone around a circular table. First, everyone has converted all of their properties to co...
分类:其他好文   时间:2014-05-02 10:30:59    阅读次数:375
UVA之11292 Dragon of Loowater
Problem C: The Dragon of Loowater Once upon a time, in the Kingdom of Loowater, a minor nuisance turned into a major problem. The shores of Rellau Creek in central Loowater had always been a prime...
分类:其他好文   时间:2014-05-02 10:07:09    阅读次数:402
Reverse Linked List II
Reverse a linked list from positionmton. Do it in-place and in one-pass.For example:Given1->2->3->4->5->NULL,m= 2 andn= 4,return1->4->3->2->5->NULL.No...
分类:其他好文   时间:2014-05-02 09:10:46    阅读次数:252
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