A. (rear-front+m)mod m B. (rear-front+1)mod m C. (rear-front-1+m)mod m D. (rear-front)mod m
A. (rear+1)MOD n==front B. rear==front C. rear+1==front D. (rear-1)MOD n==front
A. r-f B. (n+f-r)%n C. n+f-r D. (n+r-f)%n
A. QU->rear-QU->front==m0 B. QU->rear-QU->front-1==m0 C. QU->front==QU->rear D. QU->front==QU->rear+1
A. stack B. char C. sackt D. shtck
A. 对 B. 错