A. O(n) B. O(n²) C. O(nlog2n) D. O(log2n)
A. s->next=p->next;p->next=s; B. p->next=s->next;s->next=p; C. q->next=p->next;s->next=p; D. p->next=s;s->next=q;
A. *S->top=e B. S->top++;*S->top=e; C. *S->top=e;S->top++; D. S->top=e;
A. 250 B. 254 C. 500 D. 501