MAX = 5
queue = [None] * MAX
front = 0
rear = 0
def enqueue(x):
    global rear, queue
    queue[rear] = x
    rear = (rear + 1) % MAX

def dequeue():
    global front
    front = (front + 1) % MAX

if __name__ == "__main__":
    enqueue(1)
    enqueue(2)
    enqueue(3)
    enqueue(4)

    dequeue()
    dequeue()

    enqueue(5)
    enqueue(6)

    print("队列数组：", queue)
    print("front下标位置：", front)
    print("rear下标位置：", rear)