91av视频/亚洲h视频/操亚洲美女/外国一级黄色毛片 - 国产三级三级三级三级

資源簡介

1、對文本信源，尋求最佳壓縮方案，現完整的無失真壓縮的編譯碼算法，完成對文本文件的壓縮及解壓。 2、構建性能分析模塊，實現對信源熵的統計、壓縮后的傳輸率（bits/symbol），以及恢復文本的完整情況進行分析。

資源截圖

代碼片段和文件信息 

#include?
#include?
#include?
#include?
#include?
#include?
#include?

#define?OK?1
#define?ERROR?0

struct?node
{
????long?weight;
????unsigned?char?ch;
????int?parentlchildrchild;
????char?code[256];
????int?Length;
}huffmannode[512];

int?compress（）;
int?uncompress（）;
int?select（struct?node?*nodeint?n）;
int?coding（struct?node?*nodeint?n）;

int?main（）
{
????int?choice;
	printf（“*************************************************************************\n“）;
	printf（“*******************************電子科學學院******************************\n“）;
	printf（“*****************************信息理論與編碼******************************\n“）;
	printf（“***********************無失真信源編碼*游程+Huffman碼*********************\n“）;
	printf（“***************************徐櫻笑、張巍燁、孫權**************************\n“）;
	printf（“*************************************************************************\n“）;
????printf（“please?choose?the?operation:\n“）;
????printf（“1.compress?file\n“）;
????printf（“2.uncompress?file\n“）;
????printf（“3.exit\n“）;
????scanf（“%d“&choice）;
????if（choice==1）compress（）;
????else?if（choice==2）uncompress（）;
????else?if（choice==3）return?0;
????else?printf（“ERROR！\n“）;
????return?0;
}

int?select（struct?node?*nodeint?n）//找出兩個無父節點且權值最低的結點
{
????int?i;
????int?s;
????long?min=214748364;
????for（i=0;i<=n;i++）
????{
????????if（node[i].parent!=-1）continue;
????????if（node[i].weight????????{
????????????min=node[i].weight;
????????????s=i;
????????}
????}
????return?s;
}

int?coding（struct?node*nodeint?n）//哈弗曼編碼
{
????int?begin;
????int?ifc;
????char?codes[256];
????codes[n-1]=‘\0‘;
????for（i=0;i????{
????????begin=n-1;
????????for（c=if=node[i].parent;f!=-1;c=ff=node[f].parent）
????????{
????????????begin--;
????????????if（node[f].lchild==c）
????????????????codes[begin]=‘0‘;
????????????else
????????????????codes[begin]=‘1‘;
????????}
????????strcpy（node[i].code&codes[begin]）;
????????node[i].Length=strlen（node[i].code）;
????}
????return?OK;
}

int?compress（）//壓縮
{
????int?countnmjis1s2;
????char?infile[20]outfile[20]ch1=0ch2=0ch=‘#‘codes[256];
????unsigned?char?c;
????FILE?*ifp*ofp1*ofp;
????long?Filelength=0filelength=0lengenth=0ff;
????double?time;
????float?ratespeed;
????clock_t?beginfinish;
????printf（“please?input?the?path?and?the?name?of?the?source?file:“）;
????scanf（“%s“infile）;
????ifp=fopen（infile“rb“）;
????if（ifp==NULL）
????{
????????printf（“Not?found!\n“）;
????????return?ERROR;
????}
????ofp1=fopen（“C:\\Users\\Administrator\\Documents\\pythonexercise\\untitled\\c\\combined\\combined\\combined\\1.txt““wb“）;
????printf（“please?input?the?path?and?the?name?of?the?object?file:“）;
????scanf（“%s“outfile）;
????ofp=fopen（outfile“wb“）;
????if（ofp==NULL）
????{
????????printf（“Not?found!\n“）;
????????return?ERROR;
????}
????begin=clock（）;
????while（!feof（ifp

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-02-05?21:27??combined\
?????目錄???????????0??2018-02-05?21:27??combined\Debug\
?????文件???????40448??2018-01-02?23:25??combined\Debug\combined.exe
?????文件??????352220??2018-01-02?23:25??combined\Debug\combined.ilk
?????文件??????445440??2018-01-02?23:25??combined\Debug\combined.pdb
?????目錄???????????0??2018-02-05?21:27??combined\combined\
?????文件????????6599??2018-01-02?23:27??combined\combined\1.txt
?????文件????????4411??2018-01-02?23:29??combined\combined\2.txt
?????目錄???????????0??2018-02-05?21:26??combined\combined\Debug\
?????文件????????6768??2018-01-02?23:25??combined\combined\Debug\CL.read.1.tlog
?????文件????????2408??2018-01-02?23:25??combined\combined\Debug\CL.write.1.tlog
?????文件????????2490??2018-01-02?23:25??combined\combined\Debug\cl.command.1.tlog
?????文件?????????406??2017-12-30?10:16??combined\combined\Debug\combined.exe.embed.manifest
?????文件?????????472??2018-01-02?23:19??combined\combined\Debug\combined.exe.embed.manifest.res
?????文件?????????381??2018-01-02?23:25??combined\combined\Debug\combined.exe.intermediate.manifest
?????文件?????????171??2018-01-02?23:28??combined\combined\Debug\combined.lastbuildstate
?????文件????????1106??2018-01-02?23:28??combined\combined\Debug\combined.log
?????文件???????36368??2018-01-02?23:25??combined\combined\Debug\combined.obj
?????文件?????????713??2017-12-30?10:14??combined\combined\Debug\combined.vcxprojResolveAssemblyReference.cache
?????文件???????????0??2017-12-30?10:14??combined\combined\Debug\combined.write.1.tlog
?????文件?????????206??2017-12-30?10:16??combined\combined\Debug\combined_manifest.rc
?????文件???????????2??2018-01-02?23:25??combined\combined\Debug\link-cvtres.read.1.tlog
?????文件???????????2??2018-01-02?23:25??combined\combined\Debug\link-cvtres.write.1.tlog
?????文件???????????2??2018-01-02?23:25??combined\combined\Debug\link.2692-cvtres.read.1.tlog
?????文件???????????2??2018-01-02?23:25??combined\combined\Debug\link.2692-cvtres.write.1.tlog
?????文件???????????2??2018-01-02?23:25??combined\combined\Debug\link.2692.read.1.tlog
?????文件???????????2??2018-01-02?23:25??combined\combined\Debug\link.2692.write.1.tlog
?????文件???????????2??2018-01-02?23:25??combined\combined\Debug\link.6724-cvtres.read.1.tlog
?????文件???????????2??2018-01-02?23:25??combined\combined\Debug\link.6724-cvtres.write.1.tlog
?????文件???????????2??2018-01-02?23:25??combined\combined\Debug\link.6724.read.1.tlog
?????文件???????????2??2018-01-02?23:25??combined\combined\Debug\link.6724.write.1.tlog
............此處省略34個文件信息

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