最佳答案:队列长度计算公式:( r e a r − f r o n t + m a x S i z e ) % m a x S i z e ( rear - front + maxSize)\% maxSize
队列长度计算公式:
( r e a r − f r o n t + m a x S i z e ) % m a x S i z e ( rear - front + maxSize)\% maxSize(rear−front+maxSize)%maxSize
+maxSize:目的是防止rear - front < 0
%maxSize:目的是防止当rear - front > 0时,又+ maxSize导致队列长度>maxSize