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#define _CRT_SECURE_NO_WARNINGS
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#define TRUE 1
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#define FALSE 0
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#define OK 1
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#define ERROR 0
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#define INFEASIBLE -1
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#define OVERFLOW -2
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typedef int Status;
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typedef struct
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{
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int OccurTime;//事件发生时刻
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int NType;//事件类型,0表示到达事件,1-4表示四个窗口的离开事件
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}Event, ElemType;
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typedef struct LNode
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{
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ElemType data;
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struct LNode* next;
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}LNode, * LinkList;
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typedef LinkList EventList;
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typedef struct
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{
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int ArrivalTime;//到达时刻
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int Duration;//办理事务所需事件
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}QElemType;
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typedef struct QNode
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{
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QElemType data;
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struct QNode* next;
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}QNode, * QueuePtr;
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typedef struct
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{
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QueuePtr front;//队头指针
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QueuePtr rear;//队尾指针
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}LinkQueue;
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EventList ev;//事件表
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Event en;//事件
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LinkQueue q[5];//四个客户队列
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QElemType customer;//客户记录
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int TotalTime, CustomerNum, CloseTime;
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void Bank_Simulation(int CloseTime);//银行业务模拟,统计一天内客户在银行逗留的平均时间
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int cmp(Event a, Event b);//比较事件发生先后
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void OpenForDay();//银行开门
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void OrderInsert(EventList L, Event en, int(*cmp)(Event a, Event b));//插入事件
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void CustomerArrived();//客户进门
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void CustomerDepature();//客户离开
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int Minimum(LinkQueue Q[5]);//求长度最短队列
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Status InitList(LinkList& L);//链表初始化
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Status ListInsert_L(LinkList& L, int i, ElemType e);//在第i个位置之前插入元素e
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Status ListEmpty(LinkList L);//判断链表是否为空
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Status DelFirst(LinkList L, LNode*& q);//删除链表中第一个结点并以q返回
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LNode* GetHead(LinkList L);//返回链表头结点
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ElemType GetCurElem(LNode* p);//已知p指向线性链表中的一个结点,返回p所指结点中元素的值
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void PrintEventList();//打印事件链表
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Status ListTraverse(LinkList& L);//遍历链表
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Status InitQueue(LinkQueue& Q);//链队列的初始化
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Status EnQueue(LinkQueue& Q, QElemType e);//入队
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Status DeQueue(LinkQueue& Q, QElemType& e);//出队
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int QueueLength(LinkQueue Q);//返回队列的长度
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Status GetHead(LinkQueue Q, QElemType& e);//获取队头元素 注:由于参数个数不同,发生函数重载
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Status QueueEmpty(LinkQueue Q);//判断队列是否为空
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void PrintQueue();//打印队列
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Status QueueTraverse(LinkQueue Q);//遍历队列Q
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int main()
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{
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srand((unsigned)time(NULL));//设定随机数种子
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printf("请输入银行的营业时间(min):");
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scanf("%d", &CloseTime);
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Bank_Simulation(CloseTime);
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return 0;
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}
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void Bank_Simulation(int CloseTime)//银行业务模拟,统计一天内客户在银行逗留的平均时间
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{
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OpenForDay();//开始营业
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LNode* p;
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while (!ListEmpty(ev))
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{
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DelFirst(GetHead(ev), p);
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printf("********action********\n");
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en = GetCurElem(p);
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if (en.NType == 0)
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{
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CustomerArrived();
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}
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else
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{
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CustomerDepature();
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}
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PrintQueue();
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PrintEventList();
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}
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printf("The Average Time is %f\n", (float)TotalTime / CustomerNum);
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}
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int cmp(Event a, Event b)//比较事件发生先后
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{
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if (a.OccurTime > b.OccurTime) return 1;
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if (a.OccurTime = b.OccurTime) return 0;
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if (a.OccurTime < b.OccurTime) return -1;
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}
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void OpenForDay()//银行开门
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//初始化操作
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{
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TotalTime = 0;//初始化累计时间为0
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CustomerNum = 0;//初始化客户数为0
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InitList(ev);//初始化事件链表为空表
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en.OccurTime = 0;
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en.NType = 0;//设定第一个客户到达事件
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OrderInsert(ev, en, cmp);
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for (int i = 1; i <= 4; i++)
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InitQueue(q[i]);//将四个银行窗口队列初始化
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}
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}
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void OrderInsert(EventList L, Event en, int(*cmp)(Event a, Event b))//插入事件
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//事件插入函数,将不同事件按发生时间递增排序
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{
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LNode* p = L;
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int i = 1;
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while (p->next && cmp(en, p->next->data) > 0)//找到事件发生时间所在事件链表中的位置
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{
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p = p->next;
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i++;
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}
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ListInsert_L(ev, i, en);//插入该事件
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}
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void CustomerArrived()//客户进门
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//处理客户到达事件,en.NType=0
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{
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CustomerNum++;
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int durtime = rand() % 30 + 1;//客户处理事务时间
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int intertime = rand() % 8;//下一个客户到达的时间间隔
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int t = en.OccurTime + intertime;//下一个客户到达的时刻
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if (t < CloseTime)//如果他在营业时间内进来
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{
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printf("一个新客户在银行营业%2dmin后进来,办理业务花费了%2dmin,下一个客户过了%2dmin后进来\n", en.OccurTime, durtime, intertime);
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OrderInsert(ev, { t, 0 }, cmp);//插入客户进门事件,NType=0为到达事件
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}
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int i = Minimum(q);//客户找最短队开始排队
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EnQueue(q[i], { en.OccurTime, durtime });
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if (QueueLength(q[i]) == 1)
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{
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OrderInsert(ev, { en.OccurTime + durtime,i }, cmp);//队列长度为1时,设定一个离开事件
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}
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}
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void CustomerDepature()//客户离开
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{
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int i = en.NType;
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DeQueue(q[i], customer);//删除第i队列的排头客户
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TotalTime += en.OccurTime - customer.ArrivalTime;//累计客户逗留时间
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if (!QueueEmpty(q[i])) {
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GetHead(q[i], customer);
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OrderInsert(ev, { en.OccurTime + customer.Duration, i }, cmp);//插入事件
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}
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}
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int Minimum(LinkQueue Q[5])//求长度最短队列
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{
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int minLength = QueueLength(Q[1]);
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int i = 1;
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for (int j = 2; j < 5; j++)
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{
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if (minLength > QueueLength(Q[j]))
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{
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minLength = QueueLength(Q[j]);
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i = j;
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}
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}
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return i;
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}
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