[作业]图的邻接表表示法

[作业]图的邻接表表示法

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//https://blog.csdn.net/buaa_shang/article/details/10399923
#include 
#include 
#define MAX_VERTEX_NUM 20
typedef struct ArcNode {	//边表
	int			adjvex;	
	ArcNode		*nextarc;
	type_info	*info;
};

typedef struct Vnode {		//顶点表
	char	data;
	ArcNode	*firstarc;
}VNode, AdjList[MAX_VERTEX_NUM];

typedef struct {
	AdjList	*vertices;
	int		vexnum;	//图中当前顶点数
	int		arcnum;	//图中当前边数
	int		kind;	//图的种类标志
}ALGraph;

void CreatALGraph(ALGraph* G) {
	int i, j, k;
	int a;
	ArcNode* s;

	printf("请输入顶点数和边数:\n");
	scanf("%d %d", &i, &j);
	G->vexnum = i;
	G->arcnum = j;
	printf("请输入顶点编号：\n");
	for (i = 1; i <= G->vexnum; i++) {		//建立顶点表
		scanf("%d", &a);
		G->vertices[i]->data = a;			//读入顶点信息
		G->vertices[i]->firstarc = NULL;	//边表头指针置为空
	}

	printf("请输入由两个定点构成的边，示例：0 1\n");
	for (k = 0; k < G->arcnum; k++)
	{
		scanf("%d %d", &i, &j);		//读入边(Vi, Vj)的顶点对应的序号
		s = (ArcNode *)malloc(sizeof(ArcNode));	//生成边表节点
		s->adjvex = j;
		s->nextarc = G->vertices[i]->firstarc;
		G->vertices[i]->firstarc = s;	//将新节点*s插入顶点Vi的边表头部
	}
}
int main() {

	int i, j;
	ALGraph* G = (ALGraph *)malloc(sizeof(ALGraph));
	G->vertices = (AdjList *)malloc(sizeof(Vnode) * MAX_VERTEX_NUM);

	CreatALGraph(G);


	for (i = 1; i <= G->vexnum; i++)
	{
		while (G->vertices[i]->firstarc)
		{
			printf("%d -> ", G->vertices[i]->data);
			printf("%d\n", G->vertices[i]->firstarc->adjvex);
			G->vertices[i]->firstarc = G->vertices[i]->firstarc->nextarc;
		}
	}
	return 0;
}