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vb done, good interesting.
vb做的,好有意思,-vb done, good interesting.
- 2022-01-30 14:37:46下载
- 积分:1
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假设一个文件中出现了8种符号S0,SQ,S2,S3,S4,S5,S6,S7,那么每种符号要编码,至少需要3bit。假设编码成000,001, 010,011,1...
假设一个文件中出现了8种符号S0,SQ,S2,S3,S4,S5,S6,S7,那么每种符号要编码,至少需要3bit。假设编码成000,001, 010,011,100,101,110,111。那么符号序列S0S1S7S0S1S6S2S2S3S4S5S0S0S1编码后变成 000001111000001110010010011100101000000001,共用了42bit。我们发现S0,S1,S2这3个符号出现的频率比较大,其它符号出现的频率比较小,我们采用这样的编码方案:S0到S7的码辽分别01,11,101,0000,0001,0010,0011, 100,那么上述符号序列变成011110001110011101101000000010010010111,共用了39bit。尽管有些码字如 S3,S4,S5,S6变长了(由3位变成4位),但使用频繁的几个码字如S0,S1变短了,所以实现了压缩。对于上述的编码可能导致解码出现非单值性:比如说,如果S0的码字为01,S2的码字为011,那么当序列中出现011时,你不知道是S0的码字后面跟了个1,还是完整的一个S2的码字。因此,编码必须保证较短的编码决不能是较长编码的前缀。符合这种要求的编码称之为前缀编码。要构造符合这样的二进制编码体系,可以通过二叉树来实现。-Suppose a file appears in eight kinds of symbols S0, SQ, S2, S3, S4, S5, S6, S7, then each symbol to be encoded, at least 3bit. Suppose encoding 000,001, 010,011,100,101,110,111. Then the symbolic sequence S0S1S7S0S1S6S2S2S3S4S5S0S0S1 encoded into 000001111000001110010010011100101000000001, sharing a 42bit. We found that S0, S1, S2 these three symbols the frequency of relatively large, the other symbols the frequency is relatively smal
- 2022-04-27 21:17:34下载
- 积分:1
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数据结构课程设计报告1
数据结构课程设计报告1-sergyrt hgrth
- 2023-05-22 19:25:03下载
- 积分:1
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用VFP编的电脑查询系统,比较简单,适合初学者参考.
用VFP编的电脑查询系统,比较简单,适合初学者参考.-with VFP addendum to the computer search system, a relatively simple reference for beginners.
- 2022-03-11 17:47:08下载
- 积分:1
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The realization of a number of algorithms, using the pascal, including number th...
一些算法的实现,用的是pascal,包括数论、图论、高精度计算、排序算法、背包问题等。-The realization of a number of algorithms, using the pascal, including number theory, graph theory, high-precision computing, sorting algorithms, and so on knapsack problem.
- 2022-02-05 22:21:10下载
- 积分:1
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求乘积最大的子序列乘积,采用动态规划方法求解
求乘积最大的子序列乘积,采用动态规划方法求解-product for the greatest sequences product using dynamic programming method for
- 2023-07-04 19:25:03下载
- 积分:1
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关于数据结构的几篇文章
关于数据结构的几篇文章-data on the structure of the articles
- 2023-03-24 10:20:03下载
- 积分:1
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用VC++编写中值滤波的算法,具有图形界面
用VC++编写中值滤波的算法,具有图形界面-The algorithm of Filter ,which use VC++
- 2022-09-04 21:55:03下载
- 积分:1
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established procedures for the use of binary tree, the source of intron way, the...
建立、使用二叉树的程序,内含源程,是数据结构中必学知识。-established procedures for the use of binary tree, the source of intron way, the data structure is certainly knowledge.
- 2023-06-21 19:55:03下载
- 积分:1
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C#编写的应用程序,在VS2005下开发,包括GDI+的相关基本操作以及SQL Server数据库的操作...
C#编写的应用程序,在VS2005下开发,包括GDI+的相关基本操作以及SQL Server数据库的操作-C# Prepared applications, in VS2005 under development, including GDI+ Relevant basic operation and the operation of SQL Server database
- 2022-07-11 07:20:01下载
- 积分:1