数据结构上机实验

关于文件的输入输出，只要在主函数中添加：

freopen("E:\\read9.txt","r",stdin);
freopen("E:\\write9.txt","w",stdout);

即可。

其余地方的输入输出不变，但是必须用scanf和printf进行输入输出。

实验一迷宫问题（bfs)

  1 #include"iostream"
  2 #include"stdio.h"
  3 #include"algorithm"
  4 #include"queue"
  5 #include"string.h"
  6 #include"cmath"
  7 #include"stack"
  8 #include"fstream"
  9 #define mx 105
 10 #define inf 1000
 11 using namespace std;
 12 int n,m;
 13 int sx,sy,ex,ey;
 14 int  maze[mx][mx],vis[mx][mx];
 15 int dir[8][2]= {{0,1},{0,-1},{1,0},{-1,0},{-1,-1},{-1,1},{1,-1},{1,1}};
 16 bool judge(int x,int y)
 17 {
 18     if(maze[x][y]==0&&x>=0&&x<n&&y>=0&&y<m)
 19     {
 20         return true;
 21     }
 22     return false;
 23 }
 24 void output(int step)
 25 {        
 26     int i;
 27     stack<int>path;
 28     path.push(ex*m+ey);
 29     printf("%s%d\n","最少步骤是：",step);
 30     int x=ex,y=ey,dx,dy;
 31     while(vis[x][y]!=0)
 32     {
 33         for(i=0;i<8;i++)
 34         {
 35             dx=x+dir[i][0];
 36             dy=y+dir[i][1];
 37             if(dx>=0&&dx<n&&dy>=0&&dy<m)
 38             if(vis[dx][dy]==vis[x][y]-1)
 39             {
 40                 path.push(dx*m+dy);
 41                 break;
 42             }
 43         }
 44         x=dx;y=dy;
 45     }
 46     printf("%s","最短路径为：");
 47     while(!path.empty())
 48      {
 49          int u=path.top();
 50          path.pop();
 51          x=u/m;y=u%m;
 52          if(x!=ex||y!=ey)
 53         printf("%s%d%s%d%s%s","(",x,",",y,")","->");
 54          else printf("%s%d%s%d%s\n\n","(",x,",",y,")");
 55      }
 56 
 57 }
 58 void bfs(int step)
 59 {
 60     queue<int>q;
 61     int i,x,y,dx,dy,u;
 62     x=sx;y=sy;
 63     u=x*m+y;
 64     q.push(u);
 65     while(!q.empty())
 66     {
 67         u=q.front();
 68         q.pop();
 69         x=u/m;y=u%m;
 70         if(x==ex&&y==ey)
 71         {
 72             output(step);
 73             return;
 74         }
 75         int flag=1;
 76         step=vis[x][y];
 77         for(i=0;i<8;i++)
 78         {
 79             dx=x+dir[i][0];
 80             dy=y+dir[i][1];
 81             if(judge(dx,dy))
 82             {
 83                    if(flag){step++;flag=0;}
 84                     maze[dx][dy]=1;
 85                     if(step<vis[dx][dy])
 86                     vis[dx][dy]=step;
 87                     u=dx*m+dy;
 88                     q.push(u);
 89 
 90             }
 91         }
 92     }
 93     printf("%s","没有满足条件的通路！\n");
 94 }
 95 int main()
 96 {
 97     int i,j;
 98     freopen("C://read.txt","r",stdin);
 99     freopen("C://write.txt","w",stdout);
100     while(scanf("%d%d",&n,&m),n||m)
101     {
102         for(i=0;i<n;i++)
103         {
104             for(j=0;j<m;j++)
105                 {scanf("%d",&maze[i][j]);vis[i][j]=inf;}
106         }
107         scanf("%d%d%d%d",&sx,&sy,&ex,&ey);
108         maze[sx][sy]=1;
109         vis[sx][sy]=0;
110         bfs(0);
111     }
112     return 0;
113 }

View Code

实验二锦标赛问题(简单的分治思想）

 1 #include"iostream"
 2 #include"stdio.h"
 3 #include"cmath"
 4 #include"string.h"
 5 #include"algorithm"
 6 #include"queue"
 7 using namespace std;
 8 const int mx=1005;
 9 int calendar[mx][mx];//日程表
10 FILE*  rfile=fopen("E:\\read2.txt","r");
11 FILE*  wfile=fopen("E:\\write2.txt","w");//文件读写
12 void championship(int k)
13 {
14     int i,j,t;
15     calendar[1][1]=1;//只有两个人比赛的情况
16     calendar[1][2]=2;
17     calendar[2][1]=2;
18     calendar[2][2]=1;
19     int temp=1;
20     for(t=1;t<k;t++)
21     {
22         temp*=2;
23         for(i=1;i<=temp;i++)
24         {
25             for(j=1;j<=temp;j++)
26             {
27                 calendar[i+temp][j+temp]=calendar[i][j];
28             }
29         }
30       for(i=1;i<=temp;i++)//用分治的方式打表
31             {
32                 for(j=1;j<=temp;j++)
33                 {
34                     calendar[i+temp][j]=calendar[i][j]+temp;
35                 }
36             }
37 
38        for(i=temp+1;i<=temp*2;i++)
39             {
40                 for(j=1;j<=temp;j++)
41                 {
42                     calendar[i-temp][j+temp]=calendar[i][j];
43                 }
44             }
45     }
46 
47     int n=pow(2,k);
48     for(i=1;i<=n;i++)//日程表的输出
49     {
50         for(j=1;j<=n;j++)
51             fprintf(wfile,"%d ",calendar[i][j]);
52         fprintf(wfile,"%s\n","");
53     }
54     fprintf(wfile,"%s\n","");//文件输出
55 }
56 int main()
57 {
58     int k,icase=0;
59     while((fscanf(rfile,"%d",&k),k!=-1))
60     {
61         fprintf(wfile,"%s%d%s\n","Case ",++icase," :");
62         fprintf(wfile,"%s%d\n","input k :",k);
63         championship(k);
64     }
65     fclose(wfile);
66     fclose(rfile);
67     return 0;
68 }

View Code

实验三 kruskal算法（最小生成树）

  1 #include"iostream"
  2 #include"stdio.h"
  3 #include"algorithm"
  4 #include"cmath"
  5 #include"string.h"
  6 #include"string"
  7 using namespace std;
  8 
  9 const int mx=105;
 10 const int inf=32767;
 11 FILE*  rfile=fopen("E:\\read3.txt","r");
 12 FILE*  wfile=fopen("E:\\write3.txt","w");//文件读写
 13 struct Edge//记录边的两个端点和权值
 14 {
 15     int u;
 16     int v;
 17     int w;
 18 };
 19 
 20 struct Mgraph
 21 {
 22     int edges[mx][mx];//存储边
 23     int n;//顶点数
 24 };
 25 
 26 struct UFStree//并查集的数据结构
 27 {
 28     int data;//节点对应的编号
 29     int  parent;//节点对应双亲下标
 30     int rank;//节点对应秩
 31 };
 32 
 33 bool cmp(const Edge a,const Edge b)
 34 {
 35     return a.w<b.w;
 36 }
 37 void Make_set(UFStree t[],int n)//初始化
 38 {
 39     for(int i=0;i<n;i++)
 40     {
 41         t[i].rank=0;
 42         t[i].parent=i;
 43     }
 44 }
 45 
 46 int Find_set(UFStree t[],int  x)//查找集合的代表元素
 47 {
 48     while(x!=t[x].parent)
 49         x=t[x].parent;
 50     return x;
 51 }
 52 
 53 void Union(UFStree t[],int x,int y)//将两个集合并为一个
 54 {
 55     x=Find_set(t,x);
 56     y=Find_set(t,y);
 57     if(t[x].rank>t[y].rank)//将秩小的作为秩大的子集
 58         t[y].parent=x;
 59     else
 60     {
 61         t[x].parent=y;
 62         if(t[x].rank==t[y].rank) t[y].rank++;
 63     }
 64 }
 65 
 66 void  Kruskal(Mgraph g)//求最小生成树的算法
 67 {
 68 
 69     int i,j,k,u1,v1,sn1,sn2;
 70     UFStree t[mx];
 71     Edge E[mx];
 72     k=1;                //E数组的下标从1开始
 73     for(i=0;i<g.n;i++)   //由g产生的边集E
 74         for(j=0;j<g.n;j++)
 75     {
 76         if(g.edges[i][j]!=0&&g.edges[i][j]!=inf)//取出图的邻接矩阵中所有的边
 77         {
 78             E[k].u=i;E[k].v=j;E[k++].w=g.edges[i][j];
 79         }
 80     }
 81     sort(E,E+k,cmp);//按边的权值从小到大排序
 82     Make_set(t,g.n);
 83     k=1;//k表示当前构造生成树的第几条边，初值为1
 84     j=1;//E中边的下标，初值为1
 85     while(k<g.n)
 86     {
 87         u1=E[j].u;
 88         v1=E[j].v;
 89         sn1=Find_set(t,u1);
 90         sn2=Find_set(t,v1);
 91         if(sn1!=sn2)//两定顶点属于不同的集合，该边是最小生成树的一条边
 92         {
 93             fprintf(wfile,"%s%d%s%d%s%d\n","(",u1,",",v1,"):",E[j].w);
 94             k++;//生成边数增1
 95             Union(t,u1,v1);//将 u1和v1两个顶点合并
 96         }
 97         j++;
 98     }
 99 }
100 
101 int main()
102 {
103     Mgraph g;
104     int i,j,n;
105     fprintf(wfile,"%s\n\n","输入顶点数为0时结束！");
106     while(fscanf(rfile,"%d",&n),n)
107     {
108         fprintf(wfile,"%s%d\n","输入图的顶点数目:",n);
109         g.n=n;
110         fprintf(wfile,"%s\n","输入每个顶点与n个顶点边的权值:");
111         for(i=0;i<n;i++)
112         {
113             for(j=0;j<n;j++)
114               {fscanf(rfile,"%d",&g.edges[i][j]);//取地址符很关键
115                fprintf(wfile,"%d ",g.edges[i][j]);
116               }
117               fprintf(wfile,"%s\n","");
118         }
119         fprintf(wfile,"%s\n","输出构成最小生成树的边和顶点集：");
120         Kruskal(g);
121         fprintf(wfile,"%s\n","");
122     }
123     fclose(wfile);//关闭文件
124     fclose(rfile);
125     return 0;
126 }

View Code

实验四哈夫曼编码

  1 #include"iostream"
  2 #include"stdio.h"
  3 #include"algorithm"
  4 #include"string"
  5 #include"string.h"
  6 #include"cmath"
  7 #include"fstream"
  8 using namespace std;
  9 const int mx=105;
 10 const int inf=32767;//表示无穷
 11 FILE* rfile=fopen("E:\\read4.txt","r");
 12 FILE* wfile=fopen("E:\\write4.txt","w");
 13 struct htnode
 14 {
 15     char data;//节点值
 16     double weight;//权重
 17     int parent;//双亲节点
 18     int lchild;//左孩子节点
 19     int rchild;//右孩子节点
 20 };
 21 
 22 struct hcode
 23 {
 24     char cd[mx];//存放当前结点的哈夫曼码
 25     int start;//cd[start]~cd[n]存放哈夫曼码
 26 };
 27 void CreatHuffman(htnode ht[],int n)
 28 {
 29     int i,j,k,lnode,rnode;
 30     double min1,min2;
 31     for(i=0;i<2*n-1;i++)//所有节点的相关域置初值-1
 32     {
 33         ht[i].parent=ht[i].lchild=ht[i].rchild=-1;
 34     }
 35     for(i=n;i<2*n-1;i++)//构造哈弗曼树
 36     {
 37         min1=min2=inf;
 38         lnode=rnode=-1;//lnode和rnode为最小权重的两个结点位置
 39         for(k=0;k<=i-1;k++)//在ht[]中找权值最小的两个结点
 40         {
 41             if(ht[k].parent==-1)//只在尚未构造二叉树的结点中查找
 42             {
 43                 if(ht[k].weight<min1)
 44             {
 45                 min2=min1;rnode=lnode;
 46                 min1=ht[k].weight;lnode=k;
 47             }
 48             else if(ht[k].weight<min2)
 49             {
 50                 min2=ht[k].weight;rnode=k;
 51             }
 52             }
 53         }
 54         ht[i].weight=ht[lnode].weight+ht[rnode].weight;
 55         ht[i].lchild=lnode;ht[i].rchild=rnode;//ht[i]作为双亲结点
 56         ht[lnode].parent=i;ht[rnode].parent=i;
 57     }
 58 }
 59 
 60 void CreatHuffmanCode(htnode ht[],hcode hcd[],int n)
 61 {
 62     int i,f,c;
 63     hcode hc;
 64     for(i=0;i<n;i++)//根据哈夫曼树求哈夫曼编码
 65     {
 66         hc.start=n;c=i;
 67         f=ht[i].parent;
 68         while(f!=-1)
 69         {
 70             if(ht[f].lchild==c)
 71                 hc.cd[hc.start--]='0';
 72             else
 73                 hc.cd[hc.start--]='1';
 74             c=f;f=ht[f].parent;
 75         }
 76         hc.start++;hcd[i]=hc;
 77     }
 78 }
 79 void display(htnode ht[],hcode hcd[],int n)
 80 {
 81     for(int i=0;i<n;i++)
 82     {
 83         fprintf(wfile,"%c%s",ht[i].data,": ");
 84         for(int j=hcd[i].start;j<=n;j++)
 85             fprintf(wfile,"%c",hcd[i].cd[j]);
 86         fprintf(wfile,"%s\n","");
 87     }
 88      fprintf(wfile,"%s\n","");
 89 }
 90 int main()
 91 {
 92     htnode ht[mx];
 93     hcode hcd[mx];
 94     char enter;//用于清除换行
 95     int n,i,j;
 96     while(fscanf(rfile,"%d",&n),n)
 97     {
 98         for(i=0;i<n;i++)
 99         {
100             fscanf(rfile,"%c%c%lf",&enter,&ht[i].data,&ht[i].weight);
101         }
102         CreatHuffman(ht,n);
103         CreatHuffmanCode(ht,hcd,n);
104         display(ht,hcd,n);
105     }
106     fclose(wfile);
107     fclose(rfile);
108     return 0;
109 }

View Code

实验五树和二叉树

任务（1）和（2）：

  1 #include"iostream"
  2 #include"stdio.h"
  3 #include"algorithm"
  4 #include"string"
  5 #include"string.h"
  6 #include"Stack"
  7 #include"queue"
  8 #include"vector"
  9 //顺序表ADT的定义
 10 //datatype的定义
 11 #ifndef datatype
 12 #define datatype NODE
 13 #define _ERROR NULL
 14 #endif
 15 FILE* rfile=fopen("E:\\read5.txt","r");
 16 FILE* wfile=fopen("E:\\write5.txt","w");
 17 //树结点的定义
 18 struct Tnode{
 19     struct Tnode * lchild;
 20     struct Tnode * rchild;
 21     char* data;//data用于保存节点信息，类型为字符串
 22 };
 23 typedef struct Tnode * Bitree;
 24 typedef struct Tnode * NODE;
 25 struct Table{  //为了定义栈
 26     datatype* Table_head;
 27     int Length;
 28     int Max_Length;
 29 };
 30 typedef struct Table* mystable;
 31 
 32 //栈ADT的定义
 33 typedef struct Table* mystack;
 34 //为顺序表分配空间，将所有数据初始化为init
 35 mystable Assign(const int maxlen,datatype init)
 36 {
 37     mystable temp;
 38     if((temp=(mystable)malloc(sizeof(struct Table)))!=NULL){//分配空间成功
 39         temp->Max_Length = maxlen;
 40         temp->Length=0;
 41         if((temp->Table_head=(datatype *)malloc(sizeof(datatype)*maxlen))!=NULL)
 42             for(int i=0;i<maxlen;i++)
 43                 *(temp->Table_head+i)=init;
 44         else
 45             return NULL;
 46         return temp;
 47     }
 48     return NULL;
 49 }
 50 
 51 //判断表是否为空
 52 int isEmpty(const mystable table)
 53 {
 54     if (table==NULL)
 55         return -1;
 56     if(table->Length == 0)
 57         return 1;
 58     return 0;
 59 }
 60 
 61 //判断表是否为满
 62 int isFull(const mystable table)
 63 {
 64     if (table==NULL)
 65         return -1;
 66     if(table->Length == table->Max_Length)
 67         return 1;
 68     return 0;
 69 }
 70 
 71 //获取position位置的数据
 72 datatype get(const mystable table,int position)
 73 {
 74     if (position>table->Length-1 || position<0)
 75         return _ERROR;
 76     return *(table->Table_head + position);
 77 }
 78 
 79 //获取表长
 80 int getLength(const mystable table)
 81 {
 82     if (table==NULL)
 83         return -1;
 84     return table->Length;
 85 }
 86 
 87 //从表中删除一个数据
 88 int Remove(const mystable table,int position)
 89 {
 90     int i=0;
 91     if(table==NULL)
 92         return -1;
 93     if(position>table->Length-1 || position<0)
 94         return 0;
 95     for(i=position;i<table->Length-1;i++)
 96         *(table->Table_head+i)=*(table->Table_head+(i+1));
 97     table->Length--;
 98     return 1;
 99 }
100 
101 //插入一个数据到position位置
102 int Insert(mystable table,int position,datatype data)
103 {
104     int i=0;
105     if(table==NULL)
106         return -1;
107     if(position>table->Length || position<0)
108         return 0;
109     if(isFull(table)==0){
110         for(i=table->Length;i>position;i--)
111             *(table->Table_head+i)=*(table->Table_head+(i-1));
112         *(table->Table_head+i)=data;
113         table->Length++;
114     }else{
115         mystable temp;
116         if((temp=(mystable)malloc(sizeof(struct Table)))==NULL)
117             return -1;
118        if((temp->Table_head=(datatype*) malloc(sizeof(datatype)*(table->Max_Length+1)))==NULL)
119             return -1;
120         temp->Length=table->Max_Length+1;
121         temp->Max_Length=table->Max_Length+1;
122         for(i=0;i<position;i++)
123             *(temp->Table_head+i)=*(table->Table_head+i);
124         *(temp->Table_head+i)=data;
125         for(i++;i<temp->Length;i++)
126             *(temp->Table_head+i)=*(table->Table_head+(i-1));
127         free(table->Table_head);
128         free(table);
129         table=temp;
130     }
131     return 1;
132 }
133 
134 //释放表占用的空间
135 int del(const mystable table)
136 {
137     free(table->Table_head);
138     free(table);
139     return 1;
140 }
141 //在表的最后插入一个数据
142 int add(const mystable table,datatype x)
143 {
144     return Insert(table,table->Length,x);
145 }
146 //初始化栈，分配空间
147 mystack initial()
148 {
149     return Assign(100,0);
150 }
151 
152 //从栈中弹出一个数据
153 datatype pop(mystack Stack)
154 {
155     if(Stack==NULL)
156         return _ERROR;
157     if(isEmpty(Stack))
158         return _ERROR;
159     datatype data;
160     data=get(Stack,Stack->Length-1);
161     Remove(Stack,Stack->Length-1);
162     return data;
163 }
164 
165 //返回栈顶的数据但不弹出
166 datatype peek(mystack Stack)
167 {
168     if(Stack==NULL)
169         return _ERROR;
170     if(isEmpty(Stack))
171         return _ERROR;
172     datatype data;
173     data=get(Stack,Stack->Length-1);
174     return data;
175 }
176 
177 //向栈中压入数据
178 int push(mystack Stack,datatype x)
179 {
180     return Insert(Stack,Stack->Length,x);
181 }
182 
183 
184 //分配一个新的树节点
185 NODE newNode(char* data)
186 {
187     NODE temp=(NODE)malloc(sizeof(struct Tnode));
188     if(temp==NULL)
189         return NULL;
190     temp->lchild=NULL;
191     temp->rchild=NULL;
192     temp->data=data;
193     return temp;
194 }
195 
196 //字符串转化为中缀顺序表，这是本实验的核心代码
197 mystable char_to_infix(char ex[])
198 {
199     int length=strlen(ex);
200     mystable infix=Assign(length,NULL);
201     char* temp;
202     for (int i = 0; i < length; i++) {
203         if ((ex[i] >= '0' && ex[i] <= '9') || ex[i] == '.' ) {
204         //若是数字字符则查询直到遇到一个不是数字的字符
205             int Count=0;
206             for(int j=i;(ex[j] >= '0' && ex[j] <= '9') || ex[j] == '.';j++,Count++);
207             temp=(char *)malloc(sizeof(char)*(Count+1));
208             for(int j=0;j<Count;j++)
209                 temp[j]=ex[i+j];
210             temp[Count]='\0';
211             add(infix,newNode(temp));
212             i=i+Count-1;
213         }else{
214             temp=(char *)malloc(sizeof(char)*2);
215             temp[0]=ex[i];temp[1]='\0';
216             add(infix,newNode(temp));
217         }
218     }
219     return infix;
220 }
221 
222 //中缀表达式转化为后缀表达式
223 mystable infix_to_postfix(mystable infix)
224 {
225     mystack Stack=initial();
226     mystable postfix=Assign(getLength(infix),NULL);
227     for (int i = 0; i < getLength(infix); i++) {
228         char opF,opS;
229         opF=get(infix,i)->data[0];
230         if ((opF>='0' && opF<='9') || opF=='.' || (opF>='a' && opF<='z'))
231         //数字则直接压入后缀表达式
232             add(postfix,get(infix,i));
233         else{
234             if (getLength(Stack) == 0) {
235                 push(Stack,get(infix,i));
236             } else if (opF == '(') {
237                 push(Stack,get(infix,i));
238             } else if (opF == ')') {
239             //遇到右括号，将栈中的数据依次弹出，直到遇到左括号
240                 do {
241                     opS = peek(Stack)->data[0];
242                     if (opS != '(')
243                         add(postfix,pop(Stack));
244                     else
245                         pop(Stack);
246                 } while (opS != '(');
247             } else {
248             //比较优先级，若优先级高于栈顶元素则压入栈，否则弹出
249                 do {
250                     opS = peek(Stack)->data[0];
251                     int spriority,fpriority;
252                     switch(opS){
253                     //设置优先级
254                     case '+':spriority=4;break;
255                     case '-':spriority=4;break;
256                     case '*':spriority=3;break;
257                     case '/':spriority=3;break;
258                     case '^':spriority=2;break;
259                     case '(':spriority=7;break;
260                     }
261                     switch(opF){
262                     case '+':fpriority=4;break;
263                     case '-':fpriority=4;break;
264                     case '*':fpriority=3;break;
265                     case '/':fpriority=3;break;
266                     case '^':fpriority=2;break;
267                     case '(':spriority=7;break;
268                     }
269                     if (fpriority >= spriority)
270                         add(postfix,pop(Stack));
271                     else
272                         break;
273                 } while (getLength(Stack) != 0);
274                 push(Stack,get(infix,i));
275             }
276         }
277     }
278     while (getLength(Stack) != 0)
279         add(postfix,pop(Stack));
280 //释放括号占用的内存
281     for(int i=0;i<getLength(infix);i++){
282         NODE temp=get(infix,i);
283         if(temp->data[0]=='(' || temp->data[0]==')'){
284             free(temp->data);
285             free(temp);
286         }
287     }
288     //释放栈占用的内存
289     del(Stack);
290     //释放掉前缀表达式占用的内存
291     del(infix);
292     return postfix;
293 }
294 
295 //生成表达式树
296 Bitree postfix_to_binarytree(mystable postfix)
297 {
298     mystack Stack=initial();
299     for (int i = 0; i < getLength(postfix); i++) {
300         char name;
301         name=get(postfix,i)->data[0];
302         if ((name>='0' && name<='9') || name=='.' || (name>='a' && name<='z')){
303             push(Stack,get(postfix,i));
304         }else{
305             NODE parent=get(postfix,i);
306             NODE lchild,rchild;
307             //从栈中弹出操作数，将运算符节点的两个儿子指针指向操作数结点
308             if(getLength(Stack)!=0){
309                 rchild=pop(Stack);
310                 parent->rchild=rchild;
311             }
312             if(getLength(Stack)!=0){
313                 lchild=pop(Stack);
314                 parent->lchild=lchild;
315             }
316             push(Stack,parent);
317         }
318     }
319     if(getLength(Stack)!=1){
320         return NULL;
321     }else{
322         NODE result=pop(Stack);
323         //释放内存
324         free(Stack);
325         free(postfix);
326         return result;
327     }
328 }
329 
330 //打印前缀表达式
331 void print_prefix(Bitree node)
332 {
333     if(node==NULL)
334         return;
335     fprintf(wfile,"%s",node->data);
336     if(node->lchild!=NULL)
337         print_prefix(node->lchild);
338     if(node->rchild!=NULL)
339         print_prefix(node->rchild);
340 }
341 
342 //打印后缀表达式
343 void print_postfix(Bitree node)
344 {
345     if(node==NULL)
346         return;
347     if(node->lchild!=NULL)
348         print_postfix(node->lchild);
349     if(node->rchild!=NULL)
350         print_postfix(node->rchild);
351     fprintf(wfile,"%s",node->data);
352 }
353 
354 
355 
356 //递归打印叶节点递归函数入口
357 void _print_path_with_recursion(Bitree tree,NODE path[],int depth)
358 {
359     if(tree==NULL)
360         return;
361     //若为叶节点则打印路径
362     if(tree->lchild==NULL && tree->rchild==NULL){
363         fprintf(wfile,"%s : %s",tree->data,tree->data);
364         for(int i=depth-1;i>=0;i--)
365             fprintf(wfile," %s",path[i]->data);
366         fprintf(wfile,"%s\n","");
367     }
368     if(tree->lchild!=NULL){
369         path[depth]=tree;
370         _print_path_with_recursion(tree->lchild,path,depth+1);
371     }
372     if(tree->rchild!=NULL){
373         path[depth]=tree;
374         _print_path_with_recursion(tree->rchild,path,depth+1);
375     }
376 }
377 
378 //非递归打印叶节点
379 void print_path_without_recursion(Bitree tree)
380 {
381     NODE curr=tree;
382     NODE path[100];
383     //存放深度的数组
384     int depth[100];
385     int top=0,curdepth=0;
386 
387     mystack track=initial();
388     do{
389         if(curr!=NULL){
390             if(curr->lchild==NULL && curr->rchild==NULL){
391                 fprintf(wfile,"%s : %s",curr->data,curr->data);
392                 for(int i=curdepth-1;i>=0;i--)
393                     fprintf(wfile," %s",path[i]->data);
394                 fprintf(wfile,"%s\n","");
395                 //从栈中弹出下一个要访问的结点，并将当前深度更新为该结点深度
396                 curr=pop(track);
397                 curdepth=depth[--top];
398             }else{
399                 path[curdepth]=curr;
400                 push(track,curr->rchild);
401                 depth[top++]=++curdepth;
402                 curr=curr->lchild;
403             }
404         }else{
405             curr=pop(track);
406             curdepth=depth[--top];
407         }
408     }while(curr!=NULL || getLength(track)!=0);
409 }
410 //递归打印叶节点主程序入口
411 void print_path_with_recursion(Bitree tree)
412 {
413     NODE path[100];
414     _print_path_with_recursion(tree,path,0);
415 }
416 int main(){
417     char ch[100];
418     int icase=1;
419     while(fscanf(rfile,"%s",ch),strcmp(ch,"no")!=0)//输入表达式
420   {
421     fprintf(wfile,"%s%d%s\n\n","案例 #",icase++,": ");
422     mystable infix=char_to_infix(ch);
423     mystable postfix=infix_to_postfix(infix);
424     Bitree root=postfix_to_binarytree(postfix);
425     if(root==NULL)
426         fprintf(wfile,"%s","输入有误!\n\n");
427     else{
428         fprintf(wfile,"%s","输出前缀表达式:  ");
429         print_prefix(root);//输出前缀式
430         fprintf(wfile,"%s\n\n","");
431         fprintf(wfile,"%s","输出后缀表达式:  ");
432         print_postfix(root);//输出后缀式2
433         fprintf(wfile,"%s\n\n","");
434         fprintf(wfile,"%s\n","用递归打印从根节点到叶子节点的路径：");
435         print_path_with_recursion(root);
436         fprintf(wfile,"%s\n","");
437         fprintf(wfile,"%s\n","用非递归打印从根节点到叶子节点的路径：");
438         print_path_without_recursion(root);
439     }
440  }
441     return 0;
442 }

View Code

任务（3）：

对于拓扑排序，我用了两种方法，一种是利用邻接矩阵：

  1 #include"iostream"
  2 #include"stdio.h"
  3 #include"cmath"
  4 #include"string.h"
  5 #include"queue"
  6 #include"stack"
  7 #include"vector"
  8 #include"algorithm"
  9 #include"fstream"
 10 using namespace std;
 11 const int mx=105;
 12 const int inf=32767;//表示无穷大
 13 FILE* rfile=fopen("E:\\read6.txt","r");
 14 FILE* wfile=fopen("E:\\write6.txt","w");
 15 int n,m;;//n表示节点的数目，m表示边的数目
 16 int topoArray[mx];//拓扑排序的数组
 17 bool visited[mx];//用来标记该顶点是否已被访问过
 18 bool cnt[mx];//用于拓扑排序中判断某个点是否已进栈
 19 struct Mgraph//图的邻接矩阵
 20 {
 21     int NumVertices,NumEdges;
 22     int Edges[mx][mx];
 23 };
 24 struct EdgeNode//邻接表的边节点类型
 25 {
 26     int dest;//边的另一顶点位置
 27     int weight;//边的权重
 28     EdgeNode *link;//下一条链指针
 29 };
 30 struct VertexNode//顶点节点类型（表头节点）
 31 {
 32     int data;
 33     EdgeNode *first;
 34 };
 35 struct ALGraph//邻接表类型
 36 {
 37     VertexNode verticeslish[mx];
 38     int NumVetices,NumEdeges;
 39 };
 40 //创建图的邻接矩阵表示
 41 void Creat_Mgraph(Mgraph &M)
 42 {
 43         int i;
 44         M.NumVertices=n;
 45         M.NumEdges=m;
 46         //初始化所有边之间的权值为-1,表示两个结点之间无直接通路
 47         memset(M.Edges,-1,sizeof(M.Edges));
 48         for(i=0;i<m;i++)
 49         {
 50             int p,q,w;
 51             fscanf(rfile,"%d%d%d",&p,&q,&w);
 52             M.Edges[p][q]=w;
 53         }
 54 }
 55 //将邻接矩阵转换为邻接表表示
 56 void Mgraph_to_ALGraph(Mgraph &M,ALGraph &ALG)
 57 {
 58     ALG.NumVetices=M.NumVertices;
 59     ALG.NumEdeges=M.NumEdges;
 60     int i,j;
 61     for(i=0;i<n;i++)
 62     {
 63         ALG.verticeslish[i].data=i;
 64         ALG.verticeslish[i].first=NULL;
 65         for(j=0;j<n;j++)
 66         {
 67             if(M.Edges[i][j]!=-1)
 68             {
 69                 EdgeNode  *temp=new EdgeNode;
 70                 temp->link=ALG.verticeslish[i].first;
 71                 temp->weight=M.Edges[i][j];
 72                 temp->dest=j;
 73                 ALG.verticeslish[i].first=temp;
 74             }
 75         }
 76     }
 77 }
 78 //输出图的邻接矩阵表示
 79 void Output_Mgraph(Mgraph &M)
 80 {
 81     int i,j;
 82     for(i=0;i<M.NumVertices;i++)
 83     {
 84         fprintf(wfile,"%d%s",i,": ");
 85         for(j=0;j<M.NumVertices;j++)
 86         {
 87             fprintf(wfile,"%d%s",M.Edges[i][j]," ");
 88         }
 89         fprintf(wfile,"%s\n","");
 90     }
 91      fprintf(wfile,"%s\n","");
 92 }
 93 //输出图的邻接表表示
 94 void Output_ALGraph(ALGraph &ALG)
 95 {
 96      int i;
 97      for(i=0;i<ALG.NumVetices;i++)
 98      {
 99          int flag=false;
100          fprintf(wfile,"%d%s",i,": ");
101          EdgeNode *temp;
102          temp=ALG.verticeslish[i].first;
103          while(temp!=NULL)
104          {
105              flag=true;
106              fprintf(wfile,"%d%s%d%s",temp->dest,"(",temp->weight,")  ");
107              temp=temp->link;
108          }
109          if(!flag) fprintf(wfile,"%s\n","空");
110          fprintf(wfile,"%s\n","");
111      }
112 }
113 //用dfs递归遍历从0开始的深度优先遍历序列
114 void Dfs_From_0(int k,ALGraph &ALG)
115 {
116     if(!visited[k])
117     {
118         fprintf(wfile,"%d%s",k," ");
119         visited[k]=true;
120         EdgeNode *temp=ALG.verticeslish[k].first;
121         while(temp!=NULL)
122         {
123             Dfs_From_0(temp->dest,ALG);
124             temp=temp->link;
125         }
126     }
127 }
128 //从0开始的广度优先遍历非递归算法
129 void Bfs_From_0(int k,ALGraph &ALG)
130 {
131     memset(visited,false,sizeof(visited));
132     fprintf(wfile,"%d%s",k," ");
133     visited[k]=true;
134     EdgeNode *temp=ALG.verticeslish[k].first;
135     queue<EdgeNode *>q;
136     while(temp!=NULL)
137     {
138         if(!visited[temp->dest])
139             {q.push(temp);visited[temp->dest]=true;}
140             temp=temp->link;
141     }
142     EdgeNode *cur;
143     while(!q.empty())
144     {
145         cur=q.front();
146         q.pop();
147         k=cur->dest;
148         fprintf(wfile,"%d%s",k," ");
149         cur=ALG.verticeslish[k].first;
150         while(cur!=NULL)
151         {
152             if(!visited[cur->dest])
153             {q.push(cur);visited[cur->dest]=true;}
154             cur=cur->link;
155         }
156     }
157 }
158 //判断某个节点是否入度为零
159 bool Judge_Column(Mgraph &M,int k)
160 {
161     int i;
162     for(i=0;i<M.NumVertices;i++)
163     {
164         if(M.Edges[i][k]!=-1)
165         {
166             return false;
167         }
168     }
169     return true;
170 }
171 //输出拓扑排序的结果
172 void Output_Topoarray(Mgraph &M,int k)
173 {
174     if(k<M.NumVertices)
175         fprintf(wfile,"%s\n","图中有有向环！");
176     else
177     {
178         fprintf(wfile,"%s","输出该图的拓扑序列： ");
179         for(int i=0;i<k;i++)
180             fprintf(wfile,"%d%s",topoArray[i]," ");
181     }
182     fprintf(wfile,"%s\n","");
183 }
184 //进行拓扑排序
185 void TopologicalSort(Mgraph &M)
186 {
187     memset(cnt,false,sizeof(cnt));
188     stack<int>S;
189     int k=0,i,j;
190     for(i=0;i<M.NumVertices;i++)
191     {
192         if(Judge_Column(M,i)&&!cnt[i])
193         {
194             cnt[i]=true;
195             topoArray[k++]=i;
196             S.push(i);
197         }
198     }
199     while(!S.empty())
200     {
201         int cur=S.top();
202         S.pop();
203         for(j=0;j<M.NumVertices;j++)
204             M.Edges[cur][j]=-1;
205         for(i=0;i<M.NumVertices;i++)
206        {
207          if(Judge_Column(M,i)&&!cnt[i])
208          {
209             cnt[i]=true;
210             topoArray[k++]=i;
211             S.push(i);
212           }
213        }
214     }
215     Output_Topoarray(M,k);
216 }
217 
218 int main()
219 {
220     int iCase=1;//案例个数
221     Mgraph M;
222     ALGraph ALG;
223     while(fscanf(rfile,"%d%d",&n,&m),n&&m)
224     {
225          fprintf(wfile,"%s%d%s\n","案例 #",iCase++,": ");
226          Creat_Mgraph(M);
227          Mgraph_to_ALGraph(M,ALG);
228          fprintf(wfile,"%s\n","输出图的邻接矩阵表示：");
229          Output_Mgraph(M);
230          fprintf(wfile,"%s\n","输出图的邻接表表示:");
231          Output_ALGraph(ALG);
232          memset(visited,false,sizeof(visited));
233          fprintf(wfile,"%s","输出从0开始的递归dfs遍历：");
234          Dfs_From_0(0,ALG);
235          fprintf(wfile,"%s\n","");
236          fprintf(wfile,"%s","输出从0开始的非递归bfs遍历： ");
237          Bfs_From_0(0,ALG);
238          fprintf(wfile,"%s\n","");
239          TopologicalSort(M);
240          fprintf(wfile,"%s\n","");
241     }
242     return 0;
243 }

View Code

一种是利用邻接表：

  1 #include <stdio.h>
  2 #include <stdlib.h>
  3 #include <Queue>
  4 #include <string.h>
  5 #include <Stack>
  6 using namespace std;
  7 bool visit[1000];
  8 int inCount[1000];
  9 
 10 typedef struct EdgeNode{
 11       int dest;
 12       int cost;
 13       struct EdgeNode *Link;
 14 };
 15 typedef struct VertexNode
 16 {
 17       int data;
 18       struct EdgeNode *first;
 19 };
 20 typedef struct ALGraph
 21 {
 22       VertexNode *VerticesList;
 23       int numVertices,numEdges;
 24 };
 25 void InitGraph(ALGraph& G)
 26 {
 27       G.numVertices=0;
 28       G.numEdges=0;
 29       G.VerticesList=new VertexNode[1000];
 30       for (int i=0;i<1000;i++)
 31       {
 32             G.VerticesList[i].first=NULL;
 33       }
 34 };
 35 int GetVertexPos(ALGraph& G,int vertex)/*找出该顶点的顶点号*/
 36 {
 37       for (int i=0;i<G.numVertices;i++)
 38             if (G.VerticesList[i].data==vertex)
 39                   return i;
 40       return -1;
 41 }
 42 int GetValue(ALGraph& G,int i)/*返回顶点i，不合理则返回0*/
 43 {
 44       if (i==-1)
 45             return 0;
 46       else
 47             return G.VerticesList[i].data;
 48 };
 49 int FirstNeighbor(ALGraph& G,int v)/*返回顶点v的第一个邻接顶点的顶点号，若无则返回-1*/
 50 {
 51       if (v!=-1)
 52       {
 53             EdgeNode *p=G.VerticesList[v].first;
 54             if (p!=NULL)
 55                   return p->dest;
 56       }
 57       else return -1;
 58 }
 59 
 60 int NextNeighbor(ALGraph &g, int v, int w)/*返回在顶点v的邻接顶点w后的下一个顶点号，没有则返回-1*/
 61 {
 62     EdgeNode *p;
 63     p=g.VerticesList[v].first;
 64     while(p)
 65     {
 66         if(p->dest==w&&p->Link!=NULL)
 67             return p->Link->dest;
 68         p=p->Link;
 69     }
 70     return -1;
 71 }
 72 
 73 void creat(ALGraph& G)
 74 {
 75       int i,j,k;
 76       EdgeNode *s;
 77       int n,m;
 78       int weight;
 79       printf("请输入顶点数和边数：\n");
 80       scanf("%d %d",&G.numVertices,&G.numEdges);
 81       printf("输入顶点信息：\n");
 82       for (i=0;i<G.numVertices;i++)
 83       {
 84             scanf("%d",&G.VerticesList[i].data);
 85             G.VerticesList[i].first=NULL;
 86       }
 87       printf("输入边的信息：\n");
 88       for (k=0;k<G.numEdges;k++)
 89       {
 90             scanf("%d %d %d",&i,&j,&weight);
 91             s=new EdgeNode;
 92             s->dest=j;
 93             inCount[j]++;
 94             s->cost=weight;
 95             s->Link=G.VerticesList[i].first;
 96 
 97             G.VerticesList[i].first=s;
 98       }
 99 
100 }
101 
102 int Numberofvertices(ALGraph& G)/*返回图中的顶点个数*/
103 {
104       return G.numVertices;
105 }
106 void PrintfGraph(ALGraph& G)/*输出有向图邻接表*/
107 {
108       int i,j;
109       EdgeNode *p;
110       printf("图G的顶点数是:%d\n",G.numVertices);
111       printf("顶点向量的值是:");
112       for (i=0;i<G.numVertices;i++)
113             printf("%d  ",G.VerticesList[i].data);
114       printf("\n");
115       printf("图G的边数是:%d\n",G.numEdges);
116       for (i=0;i<G.numVertices;i++){
117             for (p=G.VerticesList[i].first;p!=NULL;p=p->Link)
118                   printf("(%d,%d,%d)\n",i,p->dest,p->cost);
119       }
120 };
121 void DFS(ALGraph& G,int v,bool visited[])/*DFS*/
122 {
123       printf("%d  ",GetValue(G,v));
124       visited[v]=true;
125       int w=FirstNeighbor(G,v);
126       while (w!=-1)
127       {
128             if (visited[w]==false)
129                   DFS(G,w,visited);
130             w=NextNeighbor(G,v,w);
131       }
132 };
133 
134 
135 void BFS(ALGraph&G, int v)/*BFS*/
136 {
137       int i,k,w,n=Numberofvertices(G);
138       for (i=0;i<n;i++)
139             visit[i]=false;
140       queue <int > q;/*创建队列*/
141       if (!visit[v])
142       {
143             printf("%d  ",G.VerticesList[v].data);
144             visit[v]=true;
145       }
146       q.push(v);
147       while (!q.empty())
148       {
149             int vv=q.front();
150             q.pop();
151             for (int w = FirstNeighbor(G, vv); w >= 0; w = NextNeighbor(G, vv, w))
152             {
153                   if (!visit[w])
154                   {
155                         printf("%d  ",G.VerticesList[w].data);
156                         visit[w] = true;
157                         q.push(w);
158                   }
159             }
160       }
161       delete[]visit;
162 };
163 void TopologicalSort(ALGraph& g)//拓扑排序算法
164 {
165 
166     stack<int> s;
167     for(int i=1;i<=g.numVertices;i++)
168         if(!inCount[i])
169             s.push(g.VerticesList[i].data);//入度为0者进栈
170     int count=0;
171     while(!s.empty())
172     {
173         int v = s.top();
174         s.pop();
175         printf("%d  ",v);
176         count++;
177         for(EdgeNode *p = g.VerticesList[v].first ; p!=NULL ; p=p->Link)
178         {
179             //对i号顶点的每个邻接点的入度减1,新产生的入度为0的顶点进栈
180             int k = p->dest;
181             if(!(--inCount[g.VerticesList[k].data]))
182                   s.push(g.VerticesList[k].data);
183         }
184     }
185     printf("\n")
186     if(count<g.numVertices)
187       printf("存在回路\n");
188     else
189       printf("存在拓扑排序\n");
190 }
191 
192 
193 int main()
194 {
195       int start;
196       int i,j;
197       ALGraph G;
198       InitGraph(G);
199       creat(G);
200       PrintfGraph(G);
201       TopologicalSort(G);
202       printf("输入从哪个点开始DFS遍历:\n");
203       scanf("%d",&start);
204       DFS(G,start,visit);
205       printf("\n");
206       printf("输入从哪个点开始BFS遍历:\n");
207       scanf("%d",&start);
208       BFS(G,start);
209       printf("\n");
210 
211       return 0;
212 }

View Code

实验六：

1、顺序查找和二分查找

 1 #include"iostream"
 2 #include"stdio.h"
 3 #include"algorithm"
 4 #include"string.h"
 5 #include"string"
 6 #include"fstream"
 7 #include"cmath"
 8 #include"queue"
 9 #include"stack"
10 #include"vector"
11 using namespace std;
12 const int mx=1005;
13 FILE* rfile=fopen("E:\\read7.txt","r");
14 FILE* wfile=fopen("E:\\write7.txt","w");
15 
16 struct SeqList //顺序表的数据结构
17 {
18     int DataNum;
19     int data[mx];
20 };
21 //顺序查找
22 int SeqFind(SeqList &L,int x)
23 {
24     int step=1;
25     L.data[L.DataNum]=x;//监视哨
26     for(int i=0;i<=L.DataNum;i++)
27     {
28         fprintf(wfile,"%s%d%s%d %d\n","第 ",step++," 步查找到的值和下标分别为:",L.data[i],i);
29         if(x==L.data[i]) return i;
30     }
31 }
32 //二分查找
33 int BinFind(SeqList &L,int x)
34 {
35     int step=1;
36     int mid,left,high;
37     left=0;high=L.DataNum-1;
38     while(left<=high)
39     {
40          mid=(left+high)/2;
41          fprintf(wfile,"%s%d%s%d %d\n","第 ",step++," 步查找到的值和下标分别为:",L.data[mid],mid);
42          if(L.data[mid]==x)
43             return mid;
44          else if(x<L.data[mid])
45             high=mid-1;
46          else
47             left=mid+1;
48     }
49     return L.DataNum;
50 }
51 int main()
52 {
53     int iCase=1;//案例个数
54     int num;//元素个数；
55     int i,j,FindNum;//FindNum为查找返回的下标
56     while(fscanf(rfile,"%d",&num),num!=0)
57     {
58         fprintf(wfile,"%s%d%s\n","案例 #",iCase++,": ");
59         SeqList L;
60         L.DataNum=num;
61         fprintf(wfile,"%s","输出原始序列： ");
62         for(i=0;i<num;i++)
63             {fscanf(rfile,"%d",&L.data[i]);fprintf(wfile,"%d ",L.data[i]);}
64         fprintf(wfile,"%s\n","");
65         fscanf(rfile,"%d",&FindNum);
66         fprintf(wfile,"%s%d\n\n","需要查找的数(顺序查找）： ",FindNum);
67         fprintf(wfile,"%s\n","输出查找过程： ");
68         int FindResult=SeqFind(L,FindNum);
69            fprintf(wfile,"%s\n","输出查找结果： ");
70         if(FindResult==L.DataNum)
71             fprintf(wfile,"%s%d%s\n\n","原序列中不存在 ",FindNum,"!");
72         else
73             fprintf(wfile,"%d%s%d\n\n",FindNum," 在原序列中的下标为: ",FindResult);
74         sort(L.data,L.data+L.DataNum);
75         fprintf(wfile,"%s","将上面的序列排好序输出： ");
76         for(i=0;i<num;i++)
77             fprintf(wfile,"%d%s",L.data[i]," ");
78         fprintf(wfile,"%s\n\n","");
79         fprintf(wfile,"%s%d\n\n","需要查找的数(折半查找）： ",FindNum);
80         FindResult=BinFind(L,FindNum);
81         fprintf(wfile,"%s\n","输出查找结果： ");
82         if(FindResult==L.DataNum)
83             fprintf(wfile,"%s%d%s\n\n","新序列中不存在 ",FindNum,"!");
84         else
85             fprintf(wfile,"%d%s%d\n\n",FindNum," 在新序列中的下标为: ",FindResult);
86     }
87     return 0;
88 }

View Code

2、直接插入排序

 1 #include"iostream"
 2 #include"stdio.h"
 3 #include"algorithm"
 4 #include"string.h"
 5 #include"string"
 6 #include"cmath"
 7 #include"queue"
 8 #include"stack"
 9 #include"vector"
10 #include"fstream"
11 using namespace std;
12 const int mx=1005;
13 //输出序列
14 void Output_Array(int Array[],int Num)
15 {
16     int i;
17     for(i=0;i<Num;i++)
18         printf("%d ",Array[i]);
19     printf("\n");
20 }
21 //直接插入排序
22 void Straight_Insertion_Sort(int Array[],int Num)
23 {
24     int i,j;
25     for(i=1;i<Num;i++)
26     {
27         if(Array[i]<Array[i-1])
28         {
29             int temp=Array[i];
30             for(j=i-1;j>=0&&Array[j]>temp;j--)
31             {
32                 Array[j+1]=Array[j];
33             }
34             Array[j+1]=temp;
35         }
36         printf("第%d次进行插入排序得到的序列： ",i);
37         Output_Array(Array,Num);
38     }
39 }
40 
41 int main()
42 {
43     int iCase=1;
44     freopen("E:\\read8.txt","r",stdin);
45     freopen("E:\\write8.txt","w",stdout);
46     int Array[mx];
47     int i,j,Num;
48     while(scanf("%d",&Num),Num!=0)
49     {
50         printf("案例 #%d ：\n",iCase++);
51         for(i=0;i<Num;i++)
52             scanf("%d",&Array[i]);
53         printf("原始序列：");
54         for(i=0;i<Num;i++)
55             printf("%d ",Array[i]);
56         printf("\n");
57         Straight_Insertion_Sort(Array,Num);
58     }
59 }

View Code

3、快速排序

 1 #include"iostream"
 2 #include"stdio.h"
 3 #include"algorithm"
 4 #include"string.h"
 5 #include"string"
 6 #include"cmath"
 7 #include"queue"
 8 #include"stack"
 9 #include"vector"
10 #include"map"
11 using namespace std;
12 const int mx=1005;
13 int step;//记录快速排序进行的步数
14 int num;//记录序列中元素的个数
15 void Quick_Sort(int Array[],int low,int high)
16 {
17     if(low>=high) return;
18     int first=low;
19     int last=high;
20     int key=Array[first];
21     while(first<last)//将比key小的放到key前面，比key大的放到key后面
22     {
23         while(first<last&&Array[last]>=key) last--;
24         Array[first]=Array[last];
25         while(first<last&&Array[first]<=key) first++;
26         Array[last]=Array[first];
27     }
28     Array[first]=key;
29     printf("第 %d 次排序后的序列： ",step++);//输出序列
30     for(int  i=0;i<num;i++)
31         printf("%d ",Array[i]);
32     printf("\n");
33     Quick_Sort(Array,low,first-1);//分治的思想
34     Quick_Sort(Array,first+1,high);
35 }
36 int main()
37 {
38     int i,iCase=1;
39     int Array[mx];
40     freopen("E:\\read9.txt","r",stdin);
41     freopen("E:\\write9.txt","w",stdout);
42     while(scanf("%d",&num),num!=0)
43     {
44         step=1;
45         printf("案例 #%d ： \n",iCase++);
46         for(i=0;i<num;i++)
47             scanf("%d",&Array[i]);
48         printf("进行快速排序：\n");
49         Quick_Sort(Array,0,num-1);
50     }
51     return 0;
52 }

View Code

posted @ 2015-09-07 18:36 Wei_java 阅读(295) 评论(1) 编辑收藏举报

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