在单链表指针为p的结点之后插入指针为s的结点,正确的操作是( )
(A)p->next=s;s->next=p->next;
(B)s->next=p->next;p->next=s;
(C)p->next=s;p->next=s->next;
(D)p->next=s->next;p->next=s;
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(A)p->next=s;s->next=p->next;
(B)s->next=p->next;p->next=s;
(C)p->next=s;p->next=s->next;
(D)p->next=s->next;p->next=s;