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843天前#include <iostream> |
#include <fstream> |
using namespace std; |
const int Infinity=-1; |
typedef char VexType; |
struct VexCell//顶点的信息 |
{ |
VexType data;//顶点数据 |
bool visited;//是否被访问过 |
}; |
struct ArcCell//弧的信息 |
{ |
int adj; |
}; |
const MVN=21; |
struct MGraph |
{ |
VexCell vexs[MVN];//顶点数组 |
ArcCell arcs[MVN][MVN];//邻接矩阵 |
int kind,vexnum,arcnum;//类型，顶点数，弧数 |
}; |
int LocateVex(MGraph &G,VexType v);//查找顶点 |
bool InsertVex(MGraph &G,VexType u);//插入顶点 |
bool InsertArc(MGraph &G,VexType u,VexType v,int w=1);//插入弧 |
void CreateGraph(MGraph&G,char fn[]);//建立图 |
int qiuru(MGraph&G,VexType &x);//顶点的入度 |
int qiuchu(MGraph&G,VexType &x);//顶点的出度 |
void Show(MGraph &G); |
int main() |
{ |
int count1=0; |
int count2=0; |
MGraph G; |
VexType fn[]="fn.txt"; |
CreateGraph(G,fn); |
Show(G);VexType x='a'; |
cout<<"顶点"<<x<<"的入度为："<<qiuru(G,x)<<endl; |
cout<<"顶点"<<x<<"的出度为："<<qiuchu(G,x)<<endl; |
return 0; |
} |
bool InsertVex(MGraph&G,VexType u) |
{ |
int i; |
if(G.vexnum+1>MVN)return false; |
i=LocateVex(G,u); |
if(i>0)return false; |
G.vexnum++; |
G.vexs[G.vexnum].data=u; |
for(i=1;i<=G.vexnum;i++) |
G.arcs[i][G.vexnum].adj=G.arcs[G.vexnum][i].adj=Infinity; |
return true; |
} |
bool InsertArc(MGraph&G,VexType u,VexType v,int w) |
{ |
int i,j; |
i=LocateVex(G,u);if(i==0)return false; |
j=LocateVex(G,v); |
if(j==0||j==i||G.arcs[i][j].adj!=Infinity)return false; |
G.arcs[i][j].adj=w; |
G.arcnum++; |
if(G.kind>=3) |
{ |
G.arcs[j][i].adj=w; |
G.arcnum++; |
} |
return true; |
} |
int LocateVex(MGraph&G,VexType v) |
{ |
int i; |
for(i=G.vexnum;i>0&&G.vexs[i].data!=v;i--); |
return i; |
} |
void CreateGraph(MGraph&G,char fn[]) |
{ |
int i,j,w;VexType u,v;ifstream f; |
f.open(fn);f>>G.kind;i=0; |
while(true) |
{ |
f>>u;if(u=='#')break; i++;G.vexs[i].data=u; |
} |
G.vexnum=i; |
for(i=1;i<=G.vexnum;i++) |
for(j=1;j<=G.vexnum;j++) G.arcs[i][j].adj=Infinity; |
G.arcnum=0; |
while(true)//边 |
{ |
f>>u>>v;if(u=='#'||v=='#')break; |
if(G.kind==1||G.kind==3) |
w=1; |
else f>>w; |
InsertArc(G,u,v,w); |
} |
f.close(); |
} |
void Show(MGraph &G) |
{ |
int i=1,j=1; |
cout<<"所有顶点为："; |
for(i;i<=G.vexnum;i++) |
cout<<G.vexs[i].data<<" "; |
cout<<endl<<"所有弧为："; |
if(G.kind==1) |
{ |
for(i=1;i<=G.vexnum;i++) |
for(j=1;j<= G.vexnum;j++) |
if(G.arcs[i][j].adj==1) |
cout<<"<"<<G.vexs[i].data<<","<<G.vexs[j].data<<"> "; |
} |
else |
{ |
for(i=1;i<=G.vexnum;i++) |
for(j=1;j<i;j++) |
if(G.arcs[i][j].adj==1) |
cout<<"("<<G.vexs[i].data<<","<<G.vexs[j].data<<") "; |
} |
cout << endl; |
} |
int qiuru(MGraph&G,VexType &x) |
{ |
int i,j;int count1=0; |
i=LocateVex(G,x); |
if(i==0)return -1; |
for(j=1;j<=G.vexnum;j++) |
{ |
if(G.arcs[j][i].adj!=Infinity) count1++; |
} |
return count1; |
} |
int qiuchu(MGraph&G,VexType &x) |
{ |
int i,j;int count2=0; |
i=LocateVex(G,x); |
if(i==0)return -1; |
for(j=1;j<=G.vexnum;j++) |
{ |
if(G.arcs[i][j].adj!=Infinity) count2++; |
} |
return count2; |
} |
//fn.txt |
1 |
a b c # |
a b |
b c |
a c |
# # |
