v-d矢量距离路由算法代码
时间: 2023-07-25 17:08:42 浏览: 68
v-d矢量距离路由算法(Vector-Distance Routing Algorithm)是一种基于向量距离的路由算法,常用于计算机网络中的路由选择。下面是一个简单的示例代码:
```
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define MAX_NODE_NUM 10
#define INF 0x7fffffff
int graph[MAX_NODE_NUM][MAX_NODE_NUM];
int dist[MAX_NODE_NUM];
int visited[MAX_NODE_NUM];
void dijkstra(int start, int end) {
memset(visited, 0, sizeof(visited));
for(int i = 0; i < MAX_NODE_NUM; i++) {
dist[i] = INF;
}
dist[start] = 0;
for(int i = 0; i < MAX_NODE_NUM; i++) {
int minDist = INF;
int minNode = -1;
for(int j = 0; j < MAX_NODE_NUM; j++) {
if(!visited[j] && dist[j] < minDist) {
minDist = dist[j];
minNode = j;
}
}
if(minNode == -1 || minNode == end) {
break;
}
visited[minNode] = 1;
for(int j = 0; j < MAX_NODE_NUM; j++) {
if(graph[minNode][j] != INF && !visited[j]) {
int newDist = dist[minNode] + graph[minNode][j];
if(newDist < dist[j]) {
dist[j] = newDist;
}
}
}
}
}
int main() {
memset(graph, 0x7f, sizeof(graph));
for(int i = 0; i < MAX_NODE_NUM; i++) {
graph[i][i] = 0;
}
graph[0][1] = 2;
graph[0][2] = 4;
graph[1][2] = 1;
graph[1][3] = 3;
graph[2][3] = 2;
graph[2][4] = 5;
graph[3][4] = 1;
dijkstra(0, 4);
printf("The shortest path from node 0 to node 4 is %d.\n", dist[4]);
return 0;
}
```
这段代码实现了一个简单的v-d矢量距离路由算法,将邻接矩阵表示的图存储在二维数组graph中,使用Dijkstra算法计算从节点0到节点4的最短路径。其中dist数组表示每个节点到源节点的最短距离,visited数组表示某个节点是否被访问过。