查询地图中所有景点的最短路径c语言代码
时间: 2023-09-16 08:09:00 浏览: 109
以下是使用Dijkstra算法查询地图中所有景点的最短路径的C语言代码:
```c
#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
#define V 6 // 图中顶点的个数
int minDistance(int dist[], int sptSet[])
{
int min = INT_MAX, min_index;
for (int v = 0; v < V; v++)
if (sptSet[v] == 0 && dist[v] <= min)
min = dist[v], min_index = v;
return min_index;
}
void printSolution(int dist[], int n)
{
printf("Vertex Distance from Source\n");
for (int i = 0; i < V; i++)
printf("%d \t\t %d\n", i, dist[i]);
}
void dijkstra(int graph[V][V], int src)
{
int dist[V];
int sptSet[V];
for (int i = 0; i < V; i++)
dist[i] = INT_MAX, sptSet[i] = 0;
dist[src] = 0;
for (int count = 0; count < V - 1; count++)
{
int u = minDistance(dist, sptSet);
sptSet[u] = 1;
for (int v = 0; v < V; v++)
if (!sptSet[v] && graph[u][v] && dist[u] != INT_MAX && dist[u] + graph[u][v] < dist[v])
dist[v] = dist[u] + graph[u][v];
}
printSolution(dist, V);
}
int main()
{
int graph[V][V] = {{0, 4, 0, 0, 0, 0},
{4, 0, 8, 0, 0, 0},
{0, 8, 0, 7, 0, 4},
{0, 0, 7, 0, 9, 14},
{0, 0, 0, 9, 0, 10},
{0, 0, 4, 14, 10, 0}};
dijkstra(graph, 0);
return 0;
}
```
上述代码中,我们假设地图中有6个景点,用一个6 * 6的邻接矩阵来存储地图。其中,graph[i][j]表示从景点i到景点j的距离。我们使用Dijkstra算法来求解从0号景点到其他景点的最短路径,最后输出结果。
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