问题描述:
[单选]
用数组A[0..N-1]存放循环队列的元素值,若其头尾指针分别为front和rear,则循环队列中当前元素的个数为()
A.(rear-front+mod m
B.(rear-front+1)mod m
C.(rear-front-1+mod m
D.(rear-fronmom
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