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题目

答案

#include
   
    #include
    
     struct Array{
   	int data;	struct Array *next;};int main(){
   	struct Array *head,*head1,*pa,*pb,*head2,*p,*temp;	head1=(struct Array *)malloc(sizeof(struct Array));	head1->next=NULL;	p=head1;	int t;	while(1)	{
   		scanf("%d",&t);		if(t==-1) break;		else		{
   			temp=(struct Array *)malloc(sizeof(struct Array));			temp->data=t;			temp->next=NULL;			p->next=temp;			p=p->next;		}	}	head2=(struct Array *)malloc(sizeof(struct Array));	head2->next=NULL;	p=head2;	while(1)	{
   		scanf("%d",&t);		if(t==-1) break;		else		{
   			temp=(struct Array *)malloc(sizeof(struct Array));			temp->data=t;			temp->next=NULL;			p->next=temp;			p=p->next;		}	}		head=(struct Array *)malloc(sizeof(struct Array));	head->next=NULL;	p=head;	pa=head1->next;	pb=head2->next;		while(pa&&pb)	{
   		if(pa->data==pb->data)		{
   			p->next=pa;			p=p->next;			pa=pa->next;			pb=pb->next;		}		else if(pa->data
     
      data)		pa=pa->next;		else if(pa->data>pb->data)		pb=pb->next;	}	p->next=NULL;	int flag=0;	if(head->next==NULL)	{
   		printf("NULL");		return 0;	}	while(head->next)	{
   		if(flag==0)		{
   			printf("%d",head->next->data);			flag=1; 		}		else printf(" %d",head->next->data);		head=head->next;	}}