带头结点的单链表head为空的判定条件是()。 A.head==NULL B.hea 发布时间:2017-08-20 07:55 │ 来源:www.tikuol.com 题型:单项选择题 简答题 问题: 带头结点的单链表head为空的判定条件是()。A.head==NULLB.head->next==NULLC.head->next!=NULLD.head!=NULL
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