haffman

香农编码的C++实现。原理说明以及源代码。(The Shannon coding C++. Principle of instructions and source code.)

顺序表插入删除，典型的教科书式的程序。老师给的。。。。。。(The order of the table insert removed, a typical textbook-style programs.)

利用C++实现的插入,删除,增加接点等功能(The use of C++ Realized insert, delete, increase the contact and other functions)

一个强大的图象压缩开发包，支持压缩格式为jpeg，jpeg2000有损无损压缩(A powerful image compression development kit, support for compression formats jpeg, jpeg2000 detrimental to lossless compression)

有关算术编码对文本压缩的程序在c++环境中实现(about arithmetic compressed)

利用Huffman编码方式对一段文字进行编码和解码。哈夫曼编码是可变字长编码(VLC)的一种。(Using the Huffman encoding method for encoding and decoding of a paragraph of text. Huffman code is a variable length coding (VLC) is a kind of.)

解压缩软件UNZIP的C源程序代码 The decompression software UNZIP C source code(The decompression software UNZIP C source code)

设电文字符集D及各字符出现的概率F如下： D={a，b，c，d，e，f，g，h}（字符数n=8） F={5，29，7，8，14，23，3，11}( ) 编写完成下列功能的程序： ①构造关于F的Huffman树； ②求出并打印D总各字符的Huffman编码。 程序结构： 类型说明； 构造Huffman树的函数：Huffman_tree(H[m+1])； 求Huffman编码的函数：Huffman_code(code[n+1])； main() { 变量说明； 输入字符集D及频率F； 调用Huffman_tree(H)； 调用Huffman_code(code)； 打印编码； Y 继续？ N 停止 }

w_ipp-sample-data-compression，Intel，IPP函数库，文件数据快速压缩解压缩工具包。可以进行数据加密解密告诉处理( W_ipp-sample-data-compression, Intel, IPP library, file compression and decompression tool for fast data packet. You can tell the encryption and decryption of data processing)

一种改进的方案，它针对硬故障集的特点利用指示频率连续长度码(FDR码)进行二次编码压缩。该方法充分利用测试集中无关位较多而测试模式之间变化位较少的特征，应用贪心算法对预先计算的测试集进行了重新排序，尽可能的使相邻的向量间具有最少的不同位，排列成一个最佳的差分向量序列，然后应用FDR码对差分向量序列进行编码,最后对压缩结果重新分块，按照一次压缩的流程进行二次压缩。在解压时，使用片上解压电路解压，能高效地还原出原测试集。最后通过对Soc部分标准电路硬故障集的测试结果显示，本方案具有较好的压缩率。(a new improved method was proposed in the paper,the method using Frequency-Directed Run-length(FDR codes)coding for the twice aimed at hard-fault. It fully takes advantage of the characters that there are many don’t-care bits in the test set but a few different bits between the test patterns, Then it applies the greed calculate way to sort the precomputed test sets and make the close together vector have the least different sites possibly. It uses the FDR codes to coding the vectors,then blocks the results and uses the FDR codes to compress for the second time. Decompression used of on-chip circuit extract unpack,it will be deoxidize the original test efficient.using the hard-fault to compress and the experimental results prove that the improved coding method of this paper has the better compression ratios has been proved at last. )