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用数组A[0…m-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+re)mod m

B.(rear-front+m+1)mod m

C.(rear-front+m-1)mod m

D.(rear-front-m-1)mod m


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