问题及代码:
/*
*烟台大学计算机与控制工程学院
*作 者:孙丽玮
*完成日期:2016年11月23日
*问题描述:拓扑排序
*/
1、graph.h的代码(见图基本算法库)
2、graph.cpp的代码(见图基本算法库)
3、main.cpp的代码
#include
#include
#include "graph.h"
void TopSort(ALGraph *G)
{
int i,j;
int St[MAXV],top=-1; //栈St的指针为top
ArcNode *p;
for (i=0; in; i++) //入度置初值0
G->adjlist[i].count=0;
for (i=0; in; i++) //求所有顶点的入度
{
p=G->adjlist[i].firstarc;
while (p!=NULL)
{
G->adjlist[p->adjvex].count++;
p=p->nextarc;
}
}
for (i=0; in; i++)
if (G->adjlist[i].count==0) //入度为0的顶点进栈
{
top++;
St[top]=i;
}
while (top>-1) //栈不为空时循环
{
i=St[top];
top--; //出栈
printf("%d ",i); //输出顶点
p=G->adjlist[i].firstarc; //找第一个相邻顶点
while (p!=NULL)
{
j=p->adjvex;
G->adjlist[j].count--;
if (G->adjlist[j].count==0)//入度为0的相邻顶点进栈
{
top++;
St[top]=j;
}
p=p->nextarc; //找下一个相邻顶点
}
}
}
int main()
{
ALGraph *G;
int A[10][10]=
{
{0,0,0,1,1,0,0,0,0,1},
{0,0,1,1,0,0,0,1,0,0},
{0,0,0,0,1,1,0,0,1,0},
{0,0,0,0,0,0,1,0,0,0},
{0,0,0,0,0,0,0,1,0,0},
{0,0,0,0,1,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,1,0,0,0},
{0,0,0,0,0,0,0,0,0,1},
{0,0,0,0,0,0,0,0,0,0}
};
ArrayToList(A[0], 10, G);
DispAdj(G);
printf("\n");
printf("拓扑序列:");
TopSort(G);
printf("\n");
return 0;
}
运行结果: