Skip to main content

TRAVELLING SALESPERSON PROBLEM-BRANCH & BOUND


#include<iostream.h>
#include<conio.h>
class tsal
{
private:
int a[10][10],visited[10],n,cost;
public:
tsal()
{
cost=0;
}
void get()
{
int i,j;
cout<<"Enter no. of cities: ";
cin>>n;
cout<<"\nEnter cost matrix:\n";
for(i=0;i<n;i++)
{
cout<<"Enter elements of the row: "<<i+1<<"\n";
for(j=0;j<n;j++)
cin>>a[i][j];
visited[i]=0;
}
clrscr();
cout<<"\n\nThe cost list is:\n\n";
for(i=0;i<n;i++)
{
cout<<"\n\n";
for(j=0;j<n;j++)
cout<<" "<<a[i][j];
}
}
void mincost(int city)
{
int i,ncity;
visited[city]=1;
cout<<city+1<<"-->";
ncity=least(city);
if(ncity==999)
{
ncity=0;
cout<<ncity+1;
cost+=a[city][ncity];
return;
}
mincost(ncity);
}
int least(int c)
{
int i,nc=999;
int min=999,kmin;
for(i=0;i<n;i++)
{
if((a[c][i]!=0)&&(visited[i]==0))
if(a[c][i]<min)
{
min=a[i][0]+a[c][i];
kmin=a[c][i];
nc=i;
}
}
if(min!=999)
cost+=kmin;
return nc;
}
voidput()
{
cout<<"\n\nMinimum cost: ";
cout<<cost;
}
};
voidmain()
{
tsal t;
clrscr();
t.get();
cout<<"\n\nPath is: \n\n";
t.mincost(0);
t.put();
getch();
}

Labels:

Comments

Post a Comment

Popular posts from this blog

UDP SOCKETS CHAT APPLICATION (SERVER & CLIENT) USING C

SERVER #include<stdio.h> #include<netinet/in.h> #include<sys/types.h> #include<sys/socket.h> #include<netdb.h> #include<string.h> #include<stdlib.h> #define MAX 80 #define PORT 43454 #define SA struct sockaddr void func(int sockfd) { char buff[MAX]; int n,clen; struct sockaddr_in cli; clen=sizeof(cli); for(;;) { bzero(buff,MAX); recvfrom(sockfd,buff,sizeof(buff),0,(SA *)&cli,&clen); printf("From client %s To client",buff); bzero(buff,MAX); n=0; while((buff[n++]=getchar())!='\n'); sendto(sockfd,buff,sizeof(buff),0,(SA *)&cli,clen); if(strncmp("exit",buff,4)==0) { printf("Server Exit...\n"); break; } } } int main() { int sockfd; struct sockaddr_in servaddr; sockfd=socket(AF_INET,SOCK_DGRAM,0); if(sockfd==-1) { printf("socket creation failed...\n"); exit(0); } else printf("Socket successfully created..\n"); bzero(&servaddr,sizeof(s
5 comments
Read more

SIMULATION OF SLIDING WINDOW PROTOCOLS USING C

SENDER #include<sys/socket.h> #include<sys/types.h> #include<netinet/in.h> #include<netdb.h> #include<stdio.h> #include<string.h> #include<stdlib.h> #include<unistd.h> #include<errno.h> int main() { int sock,bytes_received,connected,true=1,i=1,s,f=0,sin_size; char send_data[1024],data[1024],c,fr[30]=" "; struct sockaddr_in server_addr,client_addr; if((sock=socket(AF_INET,SOCK_STREAM,0))==-1) { perror("Socket not created"); exit(1); } if(setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,&true,sizeof(int))==-1) { perror("Setsockopt"); exit(1); } server_addr.sin_family=AF_INET; server_addr.sin_port=htons(17000); server_addr.sin_addr.s_addr=INADDR_ANY; if(bind(sock,(struct sockaddr *)&server_addr,sizeof(struct sockaddr))==-1) { perror("Unable to bind"); exit(1); } if(listen(sock,5)==-1) { perror("Listen"); exit(1); } fflush(stdout); sin_size=sizeof(st
5 comments
Read more

TCP SOCKET DATE AND TIME USING C

SERVER #include<stdio.h> #include<sys/types.h> #include<sys/socket.h> #include<netinet/in.h> #include<time.h> #include<string.h> #include<stdlib.h> #define max 30 #define PORT 2100 int main() { int sersoc,clisoc,conn,len,wri; char str[max]; pid_t pid; time_t ticks; socklen_t clilen; struct sockaddr_in servaddr,cliaddr; servaddr.sin_family=AF_INET; servaddr.sin_port=htons(PORT); servaddr.sin_addr.s_addr=htonl(INADDR_ANY); if((sersoc=socket(AF_INET,SOCK_STREAM,0))<0) { perror("Socket Error"); exit(0); } if(bind(sersoc,(struct sockaddr *)&servaddr,sizeof(servaddr))<0) { perror("Bind Error"); exit(0); } listen(sersoc,10); for(;;) { len=sizeof(cliaddr); conn=(accept(sersoc,(struct sockaddr *)&clisoc,&len)); if((pid=fork())==0) { close(sersoc); ticks=time(NULL); strcpy(str,ctime(&ticks)); if(wri==(write(conn,str,sizeof(str),0))<0) { printf("Write Error");
3 comments
Read more