单项选择题
A.O(1) B.O(n) C.O(n2) D.O(nlog2n)
A.单链表 B.双链表 C.单循环链表 D.顺序表
A.p→next=s; p→next→prior=s; S→prior=p; S→next=p→next; B.s→next=p; s→next=p→next; p→next=s; p→next→prior=s; C.p→next=s; s→prior=p; p→next→prior=s; s→next=p→next; D.s→prior=p; s→next=p→next; p→next→prior=s; p→next=S;
A.p->next==NULL B.p==NULL C.p->next==head D.p==head
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