使用队列模拟理发馆的排队现象评估连续营业T小时的理发店的营业情况，设其有N把理发椅，求顾客在理发店内平均等候时间和平均逗留时间。-Using cohort simulation barber shop, the queues to assess T-hour continuous operating conditions barber shop business, it has established the barber chair N, seeking customers in the barber shop the average waiting time and average length of stay.