一、循环队列的基础知识
1.循环队列需要几个参数来确定
循环队列需要2个参数，front和rear
2.循环队列各个参数的含义
（1）队列初始化时，front和rear值都为零；
（2）当队列不为空时，front指向队列的第一个元素，rear指向队列最后一个元素的下一个位置；
（3）当队列为空时，front与rear的值相等，但不一定为零；
3.循环队列入队的伪算法
（1）把值存在rear所在的位置；
（2）rear=（rear+1）%maxsize ，其中maxsize代表数组的长度；(I. Basic knowledge of circular queues
1. Loop queues require several parameters to determine
Loop queue requires 2 parameters, front and rear
2. The meaning of each parameter of the loop queue
(1) When the queue is initialized, both front and rear values are zero;
(2) When the queue is not empty, front points to the first element of the queue, rear to the next position of the last element of the queue;
(3) When the queue is empty, the value of front and rear is equal, but not necessarily zero;
3. The team's pseudo algorithm
(1) Where the value exists in the rear position;
(2) rear= (rear+1)%maxsize, wherein maxsize represents the length of the array;)