PHP-Fusion Powered Website - Articles: C++ Program to Implement Traveling Salesman Problem using Nearest Neighbour Algorithm

Users Online

· Guests Online: 97

· Members Online: 0

· Total Members: 188
· Newest Member: meenachowdary055

Forum Threads

Newest Threads

No Threads created

Hottest Threads

No Threads created

Latest Articles

· Do while loop
· The for loop in C
· C while loop
· Pointers in C
· Functions in C

Oh no! Where's the JavaScript?
Your Web browser does not have JavaScript enabled or does not support JavaScript. Please enable JavaScript on your Web browser to properly view this Web site,
or upgrade to a Web browser that does support JavaScript; Firefox, Safari, Opera, Chrome or a version of Internet Explorer newer then version 6.

Articles Hierarchy

Articles Home » C++ » C++ Program to Implement Traveling Salesman Problem using Nearest Neighbour Algorithm

C++ Program to Implement Traveling Salesman Problem using Nearest Neighbour Algorithm

This C++ program implements the Travelling Salesman Problem which computes the minimum cost required to visit all the nodes by traversing across the edges only once.

Here is the source code of the C++ program to display the minimum cost by taking an undirected graph as input. This C++ program is successfully compiled and run on DevCpp, a C++ compiler. The program output is given below.

```
/*
```

* C++ Program to Implement Traveling Salesman Problem using Nearest neighbour Algorithm

```
 */
```
```
#include<stdio.h>
```
```
#include<conio.h>
```
```
#include<iostream>
```
```
using namespace std;
```
```
int c = 0,cost = 999;
```
```
int graph[4][4] = { {0, 10, 15, 20},
```
```
                    {10, 0, 35, 25},
```
```
                    {15, 35, 0, 30},
```
```
                    {20, 25, 30, 0}
```
```
                  };
```
```
void swap (int *x, int *y)
```
```
{
```
```
    int temp;
```
```
    temp = *x;
```
```
    *x = *y;
```
```
    *y = temp;
```
```
}
```
```
void copy_array(int *a, int n)
```
```
{
```
```
    int i, sum = 0;
```
```
    for(i = 0; i <= n; i++)
```
```
    {
```

        sum += graph[a[i % 4]][a[(i + 1) % 4]];

```
    }
```
```
    if (cost > sum)
```
```
    {
```
```
        cost = sum;
```
```
    }
```
```
}  
```
```
void permute(int *a, int i, int n) 
```
```
{
```
```
   int j, k; 
```
```
   if (i == n)
```
```
   {
```
```
        copy_array(a, n);
```
```
   }
```
```
   else
```
```
   {
```
```
        for (j = i; j <= n; j++)
```
```
        {
```
```
            swap((a + i), (a + j));
```
```
            permute(a, i + 1, n);
```
```
            swap((a + i), (a + j));
```
```
        }
```
```
    }
```
```
} 
```
```
int main()
```
```
{
```
```
   int i, j;
```
```
   int a[] = {0, 1, 2, 3};  
```
```
   permute(a, 0, 3);
```
```
   cout<<"minimum cost:"<<cost<<endl;
```
```
   getch();
```
```
}
```

Output
minimum cost:80

Users Online

Forum Threads

Latest Articles

Articles Hierarchy

C++ Program to Implement Traveling Salesman Problem using Nearest Neighbour Algorithm

C++ Program to Implement Traveling Salesman Problem using Nearest Neighbour Algorithm

Comments

Post Comment

Ratings