问题
单项选择题
循环队列的队头和队尾指针分别为front和rear，则判断循环队列为空的条件是（）。
A.front==rear
B.front==0
C.rear==0
D.front=rear+1
答案
参考答案：A
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循环队列的队头和队尾指针分别为front和rear，则判断循环队列为空的条件是（）。
A.front==rear
B.front==0
C.rear==0
D.front=rear+1
参考答案：A
It's Thursday.
It's Wednesday.
It's Sunday.
It's Friday.