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假设循环队列的元素存储空间大小为m,队头指针f指向队头元素,队尾指针r指向队尾元素的下一个位置,“队空”的条件是()。

单选题
2021-09-02 00:26
A、f!=r
B、f==r
C、f==(r+1)%m
D、f!=(r+1)%m
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正确答案
B

试题解析

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