add: 添加实训 '数据结构课程设计'

PracticalTrain/DataStructure/include/graph.h

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+// include/graph.h
+#ifndef GRAPH_H
+#define GRAPH_H
+
+#include <stdbool.h>
+#include "station.h"
+#include "route.h"
+
+// 邻接表节点
+typedef struct AdjNode {
+    int stationId;
+    int routeId;
+    double travelTime; // 行驶时间(分钟)
+    struct AdjNode* next;
+} AdjNode;
+
+// 邻接表
+typedef struct AdjList {
+    AdjNode* head;
+} AdjList;
+
+// 图结构
+typedef struct Graph {
+    AdjList adjLists[MAX_STATIONS];
+    int vertexCount;
+} Graph;
+
+// 路径节点
+typedef struct PathNode {
+    int stationId;
+    int routeId;
+    double time;
+    struct PathNode* next;
+} PathNode;
+
+// 图操作函数
+Graph* createGraph(int vertexCount);
+void destroyGraph(Graph* graph);
+void addEdge(Graph* graph, int from, int to, int routeId, double travelTime);
+void buildGraphFromRoutes(Graph* graph, const BusRoute routes[], int routeCount, 
+                          const Station stations[], int stationCount);
+
+// 路径查询函数
+PathNode* dijkstra(Graph* graph, int start, int end, double* totalTime);
+void freePath(PathNode* path);
+void displayPath(PathNode* path, const Station stations[], int stationCount,
+                const BusRoute routes[], int routeCount);
+
+#endif

PracticalTrain/DataStructure/include/route.h

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+// include/route.h
+#ifndef ROUTE_H
+#define ROUTE_H
+
+#include "station.h"
+
+#define MAX_STATIONS_PER_ROUTE 50
+
+typedef struct BusRoute {
+    int id;
+    char routeName[50];
+    int stationCount;
+    int stations[MAX_STATIONS_PER_ROUTE]; // 站点ID序列
+    double segmentTimes[MAX_STATIONS_PER_ROUTE]; // 每段行驶时间(分钟)
+} BusRoute;
+
+// 线路管理函数
+int loadRoutes(const char* filename, BusRoute routes[], int maxRoutes);
+void displayRoute(const BusRoute* route, const Station stations[], int stationCount);
+void displayAllRoutes(const BusRoute routes[], int routeCount, const Station stations[], int stationCount);
+
+#endif

PracticalTrain/DataStructure/include/station.h

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+// include/station.h
+#ifndef STATION_H
+#define STATION_H
+
+#define MAX_NAME 50
+#define MAX_STATIONS 100
+
+typedef struct Station {
+    int id;
+    char name[MAX_NAME];
+    double latitude;
+    double longitude;
+    int stopTime; // 停靠时间(秒)
+} Station;
+
+// 站点管理函数
+int loadStations(const char* filename, Station stations[], int maxStations);
+int findStationByName(const Station stations[], int count, const char* name);
+int findStationById(const Station stations[], int count, int id);
+void displayStation(const Station* station);
+void displayAllStations(const Station stations[], int count);
+
+#endif