c语言链表集合求并集用字母表示,c语言给定两个集合A和B，求集合A和集合B的并集。给定两个集合A和B，求集合A和集合B的并集。例如：A={1，2，3}，B={2，3，4}，则A∪B={1，2，3，4}...

struct Link *Union(struct Link *head1, struct Link *head2)

{

struct Link *p1 = head1->next, *p2 = head2->next;

struct Link *head, *p, *q;

head = (struct Link *)malloc(sizeof(struct Link));

head->next = NULL;

p = head;

while ((p1 != NULL) && (p2 != NULL))

{

q = (struct Link*)malloc(sizeof(struct Link));

q->next = NULL;

if (p1->data == p2->data)

{

q->data = p1->data;

p1 = p1->next;

p2 = p2->next;

}

else if (p1->data < p2->data)

{

q->data = p1->data;

p1 = p1->next;

}

else

{

q->data = p2->data;

p2 = p2->next;

}

p->next = q;

p = q;

}

if(p1 != NULL){

while(p1 != NULL){

q = (struct* Link)malloc(sizeof(struct Link));

q->next = NULL;

q->data = p1->data;

p1 = p1->next;

p->next = q;

p = q;

}

}else if(p2 != NULL){

q = (struct* Link)malloc(sizeof(struct Link));

q->next = NULL;

q->data = p2->data;

p2 = p2->next;

p->next = q;

p = q;

}

return head;

}

//适用于p1,p2链表都没有重复data的情况

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2017-07-10

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