c#ae二次开发最短路径查询代码
时间: 2024-09-18 17:17:52 浏览: 43
在C#中,如果你想要实现一个图的最短路径查询算法,例如常见的Dijkstra算法或Floyd-Warshall算法,通常会利用邻接矩阵或者邻接表的数据结构来存储图。以下是一个简单的Dijkstra算法的示例代码,它适用于有向无环图(DAG):
```csharp
using System;
using System.Collections.Generic;
class Program
{
private static List<int>[] adjList; // 邻接列表表示图
public static void Main()
{
int numVertices = 6; // 图的顶点数
// 初始化图数据...
dijkstra(0); // 从顶点0开始寻找最短路径
Console.WriteLine("Shortest path from vertex 0 to all other vertices:");
for (int i = 1; i < numVertices; i++)
Console.WriteLine($"Distance from 0 to {i}: {shortestDistance[i]}");
}
// Dijkstra算法实现
public static void dijkstra(int start)
{
bool[] visited = new bool[numVertices]; // 记录是否访问过的节点
int[] shortestDistance = new int[numVertices]; // 最短距离数组,初始化为无穷大
shortestDistance[start] = 0;
for (int iter = 0; iter < numVertices - 1; ++iter)
{
int u = FindMinDistanceNode(shortestDistance, visited);
visited[u] = true;
foreach (int v in adjList[u])
{
if (!visited[v])
{
int alt = shortestDistance[u] + GetEdgeWeight(u, v);
if (alt < shortestDistance[v])
shortestDistance[v] = alt;
}
}
}
}
// 辅助函数:找到距离最小且未访问的节点
private static int FindMinDistanceNode(int[] dist, bool[] visited)
{
int minDist = int.MaxValue;
int minIndex = -1;
for (int i = 0; i < dist.Length; i++)
{
if (!visited[i] && dist[i] <= minDist)
{
minDist = dist[i];
minIndex = i;
}
}
return minIndex;
}
// 获取边的权重,这里假设权重为整数
private static int GetEdgeWeight(int u, int v)
{
// 实际应用中,此处应该替换为实际的边权重计算逻辑
return adjList[u].IndexOf(v);
}
}
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