已知L是带表头结点的非空单链表,且P结点既不是首元结点,也不是尾元结点,试从下列提供的答案中选
(1)删除P结点的语句序列是______;
(2)删除尾元结点的语句是______。
a P—>next=P—>next—>next b P=P—>next—>next
c while(P—>next!=Q)P=P—>next
d while(P—>next!—>next!=Q)P=P—>next
e while(P—>next!—>next!=NULL)P=P—>next
f Q=P g Q=P—>next
h P=L i L=L—>next
j free(Q)