You are given a string with lower case letters only. Compress it by putting the count of the letter after it. If the letter appears once, Example: compress function: input = aaaabbc output = a4b2c decompress function: input = a2bc3 output = aabccc pu…

If you want to compress or decompress file when writing C++ code,you can choose zlib library,that's quite easy. 1,Download zlib library's code form website:http://zlib.net/ 2,Decompress the file you've downloaded,and then go to the directory "zlib-1.…

Given a string in compressed form, decompress it to the original string. The adjacent repeated characters in the original string are compressed to have the character followed by the number of repeated occurrences. Assumptions The string is not null T…

本文来自:https://msdn.microsoft.com/zh-cn/library/system.io.compression.gzipstream(v=vs.100).aspx using System; using System.IO; using System.IO.Compression; namespace zip { public class Program { public static void Main() { // Path to directory of files…

基本的文件 I/O 抽象基类 Stream 支持读取和写入字节. Stream 集成了异步支持. 其默认实现根据其相应的异步方法来定义同步读取和写入,反之亦然. 所有表示流的类都是从 Stream 类继承的. Stream 类及其派生类提供数据源和储存库的一般视图,使程序员不必了解操作系统和基础设备的具体细节. 流涉及三个基本操作: 可以从流读取. 读取是从流到数据结构(如字节数组)的数据传输. 可以向流写入. 写入是从数据源到流的数据传输. 流可以支持查找. 查找是对流内的当前位置进行的查询和…

数据传输时,有时需要将数据压缩和解压缩,本例使用GZIPOutputStream/GZIPInputStream实现. 1.使用ISO-8859-1作为中介编码,可以保证准确还原数据 2.字符编码确定时,可以在decompress方法最后一句中显式指定编码 package com.bcxin.business.utils; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.…

/// <summary> /// 压缩 解压 /// </summary> public class ZipHelper { #region 压缩解缩 /// <summary> /// 压缩指定字符串 /// </summary> /// <param name="strSource"></param> /// <returns></returns> public static stri…

1.创建文件夹 //using System.IO; Directory.CreateDirectory(%%1);   2.创建文件 //using System.IO; File.Create(%%1);   3.删除文件 //using System.IO; File.Delete(%%1);   4.删除文件夹 //using System.IO; Directory.Delete(%%1);   5.删除一个目录下所有的文件夹 //using System.IO; foreach (s…

经常会有文件过大,给文件的传输和增添了很多的麻烦,早先得知apach有个base64貌似可以用来压缩文件,但是测试没有什么效果,反而增大了文件的大小.今天了解了java自带的gzip包,如获至宝,超级好用又方便,记录下. 一.文件压缩 public static void compress(String fp_r,String fp_w){ try{ OutputStreamWriter os = new OutputStreamWriter(new GZIPOutputStream(new F…

应用场景:公司与外部公司数据对接,外部公司需申请指定IP访问.而本地ip经常变动,无法因ip变动时刻向外部公司申请绑定IP,给本地程序调试带来麻烦,故只能在指定ip服务器上搭建请求中转http请求: /// <summary> /// 中转 绑定ip中转请求:参数Base64解密,gzip压缩返回: /// kk /// </summary> public class tc : IHttpHandler { public void ProcessRequest(HttpContex…