关联账户

#include <stdio.h>
#define N 100

int connected(int* m, int p, int q)
{
	return m[p]==m[q]? 1 : 0;
}

void link(int* m, int p, int q)
{
	int i;
	if(connected(m,p,q)) return;
	int pID = m[p];
	int qID = m[q];
	for(i=0; i<N; i++) if(m[i]==pID)m[i]=qID;  //填空位置
}

int main()
{
	int m[N];
	int i;
	for(i=0; i<N; i++) m[i] = i; //初始状态，每个节点自成一个连通域
	link(m,0,1); //添加两个账户间的转账关联
	link(m,1,2); 
	link(m,3,4); 
	link(m,5,6); 
	link(m,6,7); 
	link(m,8,9); 
	link(m,3,7); 
	
	printf("%d ", connected(m,4,7));
	printf("%d ", connected(m,4,5));
	printf("%d ", connected(m,7,9));
	printf("%d ", connected(m,9,2));
	return 0;
}