哈夫曼編碼解碼實驗報告

WordWord■■哈夫曼編碼解碼實驗1.實驗要求掌握二叉樹的相關概念掌握構(gòu)造哈夫曼樹，進行哈夫曼編碼。對編碼容通過哈夫曼樹進行解碼。2.實驗容通過二叉樹構(gòu)造哈夫曼樹，并用哈夫曼樹對讀取的txt文件進行哈夫曼編碼。編碼完成后通過哈夫曼樹進行解碼。#include<stdio.h>#include<string.h>#defineMAX100//定義哈夫曼樹的存儲結(jié)構(gòu)typedefstruct{chardata;intweight;intparent;intlch;intrch;}HuffNode;//定義哈夫曼編碼的存儲結(jié)構(gòu)typedefstruct{charbit[MAX];intstart;}HuffCode;HuffNodeht[2*MAX];HuffCodehcd[MAX];intCoun[127]={0};intn;chars1[200000];chartext[5000];//構(gòu)造哈夫曼樹voidHuffmanTree(){inti,j,k,left,right,min1,min2;//printf("輸入葉子的節(jié)點數(shù)：")；//scanf("%d",&n);printf("字符數(shù)量=%d\n",n);for(i=1;i<=2*n-1;i++){ht[i].parent=ht[i].lch=ht[i].rch=0;}j=0;for(i=1;i<=n;i++){/*getchar();printf("輸入第%~個葉子節(jié)點的值：",i);scanf("%c",&ht[i].data);printf("輸入該節(jié)點的權(quán)值：")；scanf("%d",&ht[i].weight);*/for(;j<127;j++){if(Coun[j]!=0){ht[i].data=j;//printf("%c",ht[i].data);ht[i].weight=Coun[j];//printf("%d",ht[i].weight);break;}}j++;}printf("\n");for(i=1;i<=n;i++){printf("%c",ht[i].data);}printf("\n");for(i=n+1;i<=2*n-1;i++){//在前n個結(jié)點中選取權(quán)值最小的兩個結(jié)點構(gòu)成一顆二叉樹min1=min2=10000;//為min1和min2設置一^個比所有權(quán)值都大的值left=right=0;for(k=1;k<=i-1;k++)if(ht[k].parent==0)//若是根結(jié)點//令mini和min2為最小的兩個權(quán)值，left和right為權(quán)值最小的兩個結(jié)點位置if(ht[k].weight<min1){min2=min1;right=left;min1=ht[k].weight;left=k;}elseif(ht[k].weight<min2){min2=ht[k].weight;right=k;ht[left].parent=i;ht[right].parent=i;ht[i].weight=ht[left].weight+ht[right].weight;ht[i].lch=left;ht[i].rch=right;//構(gòu)造哈夫曼編碼voidHuffmanCode(){inti,c,k,f;HuffCodecd;for(i=1;i<=n;i++){cd.start=n;c=i;f=ht[i].parent;while(f!=0){if(ht[f].lch==c)cd.bit[cd.start]='0';elsecd.bit[cd.start]='1';cd.start--;WordWord■■WordWordc=f;f=ht[f].parent;}hcd[i]=cd;}printf("輸出哈夫曼編碼：\n");for(i=1;i<=n;i++){printf("%c:",ht[i].data);for(k=hcd[i].start+1;k<=n;k++)printf("%c",hcd[i].bit[k]);printf("\n");}}//對字母進行編碼voidCode()〃將字符與相應的哈夫曼編碼進行匹配，輸出編碼結(jié)果{inti=0,j,k,h=0;while(text[i]!='\0'){for(j=1;j<=n;j++){if(text[i]==ht[j].data){for(k=hcd[j].start+1;k<=n;k++){s1[h]=hcd[j].bit[k];h++;}break;}}i++;}//printf("編碼\n");//puts(s1);//printf("\n");}//解碼voidHuffmanDecode(){printf("解碼\n");intlen,i,f;charC;//charS[MAXCODE];//$。2/("%5"5);//使用gets()直接跳過len=strlen(s1);printf("s1:%d\n",len);f=2*n-1;for(i=0;i<len;i++){if(s1[i]=='0'){f=ht[f].lch;if(ht[f].lch==0&&ht[f].rch==0){C=ht[f].data;printf("%c",C);f=2*n-1;}}elseif(s1[i]=='1'){f=ht[f].rch;if(ht[f].lch==0&&ht[f].rch==0){C=ht[f].data;printf("%c",C);f=2*n-1;}}}printf("\n");}//統(tǒng)計字母個數(shù)及其權(quán)值voidCount(){inti,j,m;n=0;i=0;//printf("請僅輸入小寫字母\n");〃例程本省存在一個BUG,只輸入一個字母不能進行編碼(并未解決)//scanf("%s",s);while(text[i]!=''0')//使用ASCII碼表進行統(tǒng)計{m=text[i];//printf("%d\n",m);Coun[m]++;i++;}for(j=0;j<127;j++){if(Coun[j]!=0)n++;}}//markCodevoidmain(){intl=0;FILE*fp;fp=fopen("text.txt","r");if(fp==NULL){printf("文件打開失敗\n");while(1);}while(!feof(fp)){text[l]=fgetc(fp);l++;}printf("輸入文本\n");printf("%s\n",text);fclose(fp);Count();

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01010000010101D0010111100101111001000001010001T:1010100001;10101D010:111001000011：10101D00100:10101D0011：111CO1O0O1:1011%軟芬音半：elightfromdarkness.AndGodsawthatitwasgood.Andthere卵asrr,.:;ABGHILNRSTabcdefghiklnmDprstuvwxy『輸出哈夫曼編碼：對文本進行編碼mt鎏2AWINDOWS\systeri32\cmd.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-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微軟拼音半：輸出解碼結(jié)果

噩'2O'iAJS\sy&tem32\cmd.exeI：/：1010110翻碼hl：16674摩InthebtgireninsGadcrisatedtheheavensandtheearth.Nov;theearthwasformle"55andenpty,darkr.esswasuverthesurfaceofthedeep,andtheSpiritofCud河p=j：=：hovnringn^erthep=j：=：hovnringn^erthe皆弓十巾丁丹1sAndGod：=!aid?”Lattherebelight,"閂ndthere幗二1■ight.Godsawthatthelightwatgood,andheseparatedthelightfromthedarkn時me三Godcalledthslight"d：?y,'andthedarknesshe?allednight."Andthery5①eisevenir.g,andtherewasULuzning-thefirstday.AtidGodsaid：”Lettherebeane^spanse