diff --git a/vscode.cpp b/vscode.cpp new file mode 100644 index 0000000..ff14ede --- /dev/null +++ b/vscode.cpp @@ -0,0 +1,372 @@ +#define _CRT_SECURE_NO_WARNINGS +#include +#include +#include +#define TRUE 1 +#define FALSE 0 +#define OK 1 +#define ERROR 0 +#define INFEASIBLE -1 +#define OVERFLOW -2 +typedef int Status; +typedef struct +{ +int OccurTime;//事件发生时刻 +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 +}Event, ElemType; + +typedef struct LNode +{ +ElemType data; +struct LNode* next; +}LNode, * LinkList; + +typedef LinkList EventList; +typedef struct +{ +int ArrivalTime;//到达时刻 +int Duration;//办理事务所需事件 +}QElemType; + +typedef struct QNode +{ +QElemType data; +struct QNode* next; +}QNode, * QueuePtr; + +typedef struct +{ +QueuePtr front;//队头指针 +QueuePtr rear;//队尾指针 +}LinkQueue; + + +EventList ev;//事件表 +Event en;//事件 +LinkQueue q[5];//四个客户队列 +QElemType customer;//客户记录 +int TotalTime, CustomerNum, CloseTime; +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 +int cmp(Event a, Event b);//比较事件发生先后 +void OpenForDay();//银行开门 +void OrderInsert(EventList L, Event en, int(*cmp)(Event a, Event b));//插入事件 +void CustomerArrived();//客户进门 +void CustomerDepature();//客户离开 +int Minimum(LinkQueue Q[5]);//求长度最短队列 +Status InitList(LinkList& L);//链表初始化 +Status ListInsert_L(LinkList& L, int i, ElemType e);//在第i个位置之前插入元素e +Status ListEmpty(LinkList L);//判断链表是否为空 +Status DelFirst(LinkList L, LNode*& q);//删除链表中第一个结点并以q返回 +LNode* GetHead(LinkList L);//返回链表头结点 +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 +void PrintEventList();//打印事件链表 +Status ListTraverse(LinkList& L);//遍历链表  +Status InitQueue(LinkQueue& Q);//链队列的初始化 +Status EnQueue(LinkQueue& Q, QElemType e);//入队 +Status DeQueue(LinkQueue& Q, QElemType& e);//出队 +int QueueLength(LinkQueue Q);//返回队列的长度 +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 +Status QueueEmpty(LinkQueue Q);//判断队列是否为空 +void PrintQueue();//打印队列 +Status QueueTraverse(LinkQueue Q);//遍历队列Q  + +/* +系统每次随机生成的是 +1)当前顾客顾客的柜台被服务时间 +2)当前顾客和下一个顾客到达的间隔时间 +记住这2点就便于理解整个代码 +每个顾客在银行的等待时间取决于队列里前一个节点的离开时间,而不是自己的到达时间+服务时间。*/ + +int main() +{ +srand((unsigned)time(NULL));//设定随机数种子 +printf("请输入银行的营业时间(min):"); +scanf("%d", &CloseTime); +Bank_Simulation(CloseTime); +return 0; +} +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 +{ +OpenForDay();//开始营业 +LNode* p; +while (!ListEmpty(ev)) +{ +DelFirst(GetHead(ev), p); +printf("********action********\n"); +en = GetCurElem(p); +if (en.NType == 0) +{ +CustomerArrived(); +} +else +{ +CustomerDepature(); +} +PrintQueue(); +PrintEventList(); +} +printf("The Average Time is %f\n", (float)TotalTime / CustomerNum); +} +int cmp(Event a, Event b)//比较事件发生先后 +{ +if (a.OccurTime > b.OccurTime) return 1; +if (a.OccurTime = b.OccurTime) return 0; +if (a.OccurTime < b.OccurTime) return -1; +} + +void OpenForDay()//银行开门 +//初始化操作 +{ +TotalTime = 0;//初始化累计时间为0 +CustomerNum = 0;//初始化客户数为0 +InitList(ev);//初始化事件链表为空表 +en.OccurTime = 0; +en.NType = 0;//设定第一个客户到达事件 +OrderInsert(ev, en, cmp); +for (int i = 1; i <= 4; i++) +{ +InitQueue(q[i]);//将四个银行窗口队列初始化 +} +} + +void OrderInsert(EventList L, Event en, int(*cmp)(Event a, Event b))//插入事件 +//事件插入函数,将不同事件按发生时间递增排序 +{ +LNode* p = L; +int i = 1; +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 +{ +p = p->next; +i++; +} +ListInsert_L(ev, i, en);//插入该事件 +} + +void CustomerArrived()//客户进门 +//处理客户到达事件,en.NType=0 +{ +CustomerNum++; +int durtime = rand() % 30 + 1;//客户处理事务时间 +int intertime = rand() % 8;//下一个客户到达的时间间隔 +int t = en.OccurTime + intertime;//下一个客户到达的时刻 +if (t < CloseTime)//如果他在营业时间内进来 +{ +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); +OrderInsert(ev, { t, 0 }, cmp);//插入客户进门事件,NType=0为到达事件 +} + +int i = Minimum(q);//客户找最短队开始排队 +EnQueue(q[i], { en.OccurTime, durtime }); +if (QueueLength(q[i]) == 1) +{ +OrderInsert(ev, { en.OccurTime + durtime,i }, cmp);//队列长度为1时,设定一个离开事件 +} +} + + +void CustomerDepature()//客户离开 +{ +int i = en.NType; +DeQueue(q[i], customer);//删除第i队列的排头客户 +TotalTime += en.OccurTime - customer.ArrivalTime;//累计客户逗留时间 +if (!QueueEmpty(q[i])) { +GetHead(q[i], customer); +OrderInsert(ev, { en.OccurTime + customer.Duration, i }, cmp);//插入事件 +} +} + + +int Minimum(LinkQueue Q[5])//求长度最短队列 +{ +int minLength = QueueLength(Q[1]); +int i = 1; +for (int j = 2; j < 5; j++) +{ +if (minLength > QueueLength(Q[j])) +{ +minLength = QueueLength(Q[j]); +i = j; +} +} +return i; +} + + +Status InitList(LinkList& L)//链表初始化 +{ +L = (LinkList)malloc(sizeof(LNode)); +if (!L) +{ +exit(OVERFLOW); +} +L->next = NULL; +return OK; +} + +Status ListInsert_L(LinkList& L, int i, ElemType e)//在第i个位置之前插入元素e +{ +LinkList p = L; +int j = 0; +while (p && j < i - 1)//注意是i-1,因为要找被插入元素的前一个元素 +{ +p = p->next; +j++; +} +if (!p || j > i - 1) +{ +return ERROR; +} +LinkList s = (LinkList)malloc(sizeof(LNode)); +if (!s) +{ +exit(OVERFLOW); +} +s->data = e; +s->next = p->next; +p->next = s; +return OK; +} +Status ListEmpty(LinkList L)//判断链表是否为空 +//空表:头指针和头结点仍然存在,但头结点指向NULL +{ +if (L->next) +{ +return FALSE; +} +else +{ +return TRUE; +} +} +Status DelFirst(LinkList L, LNode*& q)//删除链表中第一个结点并以q返回 +{ +if (!L->next) +{ +return ERROR; +} +q = L->next; +L->next = q->next; +return OK; +} +LNode* GetHead(LinkList L)//返回链表头结点 +{ +return L; +} + +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 +{ +return p->data; +} + +void PrintEventList()//打印事件链表  +{ +printf("Current Eventlist is:\n"); +ListTraverse(ev); +} +Status ListTraverse(LinkList& L) //遍历链表   +{ +LNode* p = L->next; +if (!p) { +printf("List is empty.\n"); +return ERROR; +} + +while (p != NULL) { +printf("OccurTime:%d,Event Type:%d\n", p->data.OccurTime, p->data.NType); +p = p->next; +} +printf("\n"); +return OK; +} + + + +Status InitQueue(LinkQueue& Q)//链队列的初始化 +{ +Q.front = Q.rear = (QueuePtr)malloc(sizeof(QNode)); +if (!Q.front) +{ +exit(OVERFLOW); +} +Q.front->next = NULL; +return OK; +} +Status EnQueue(LinkQueue& Q, QElemType e)//入队 +{ +QNode* p = (QueuePtr)malloc(sizeof(QNode)); +if (!p) +{ +exit(OVERFLOW); +} +p->data = e; +p->next = NULL; +Q.rear->next = p; +Q.rear = p; +return OK; +} +Status DeQueue(LinkQueue& Q, QElemType& e)//出队 +{ +if (Q.front == Q.rear) +{ +return ERROR; +} +QNode* p = Q.front->next; +e = p->data; +Q.front->next = p->next; +if (Q.rear == p)//注意这里要考虑到,当队列中最后一个元素被删后,队列尾指针也丢失了,因此需对队尾指针重新复制(指向头结点) +{ +Q.rear = Q.front; +} +free(p); +return OK; +} + +int QueueLength(LinkQueue Q)//返回队列的长度 +{ +int count = 0; +QNode* p = Q.front->next; +while (p) { +p = p->next; +count++; +} +return count; +} + +Status GetHead(LinkQueue Q, QElemType& e)//获取队头元素 +{ +if (Q.front == Q.rear) +{ return ERROR;} +e = Q.front->next->data; +} +Status QueueEmpty(LinkQueue Q)//判断队列是否为空 +{ +if (Q.front == Q.rear) +{ +return TRUE; +} +return FALSE; +} +void PrintQueue()//打印队列 +{ +//打印当前队列   +int i; +for (i = 1; i <= 4; i++) { +printf("窗口 %d 有 %d 个客户:", i, QueueLength(q[i])); +QueueTraverse(q[i]); +} +printf("\n"); +} +Status QueueTraverse(LinkQueue Q)//遍历队列Q   +{ +QNode* p = Q.front->next; +if (!p) { +printf("--Is empty.\n"); +return ERROR; +} +while (p) { +printf("(到达时刻 %d min 办理业务需要花费 %d min) ", p->data.ArrivalTime, p->data.Duration); +p = p->next; +} +printf("\n"); +return OK; +} diff --git a/vscode.exe b/vscode.exe new file mode 100644 index 0000000..5c98b10 Binary files /dev/null and b/vscode.exe differ