上传文件至 '可供参考资料_zyx'

可供参考资料_zyx/银行排队问题.cpp

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+//问题2-2
+#include <iostream>
+#include <ctime>
+#include <stdlib.h> 
+#include <time.h> 
+#include <windows.h>
+
+using namespace std;
+
+#define Status int
+#define OVERFLOW 2
+#define ERROR 1
+#define OK 0;
+typedef int QElemType;
+
+int queue_number[10] = { 0 };//queue_number记录队列人数
+int i, j = 0;//i用于客户计数，j用于窗口计数
+int no = 0;//no用于记录客户序号，其中第一位客户的序号为1
+int time_length = 0;//time_length记录模拟程序运行时长
+int window_number = 0;
+
+typedef struct QNode
+{
+    int no;//序号
+    double amount;//总金额
+    double remain_amount;//未取金额（不计当前轮）
+    struct QNode* next;
+}QNode, * QueuePtr;
+
+typedef struct
+{
+    QueuePtr front; //队头指针
+    QueuePtr rear; //队尾指针
+}LinkQueue;
+
+Status InitQueue(LinkQueue& Q)
+{
+    Q.front = Q.rear = (QueuePtr)malloc(sizeof(QNode));
+    if (!Q.front) exit(OVERFLOW);
+    Q.front->next = NULL;
+    return OK;
+}
+
+Status DestroyQueue(LinkQueue& Q)
+{
+    while (Q.front)
+    {
+        Q.rear = Q.front->next;
+        free(Q.front);
+        Q.front = Q.rear;
+    }
+    return OK;
+}
+
+Status QueueEmpty(LinkQueue Q)
+{
+    return (Q.front == Q.rear);
+}
+
+Status GetHead(LinkQueue Q, int& e1, double& e2, double& e3)
+{
+    if (Q.front == Q.rear) return ERROR;
+    e1 = Q.front->next->no;
+    e2 = Q.front->next->amount;
+    e3 = Q.front->next->remain_amount;
+    return OK;
+}
+
+Status EnQueue(LinkQueue& Q, int& e1, double& e2, double& e3)
+{
+    QueuePtr p;
+    p = (QueuePtr)malloc(sizeof(QNode));
+    if (!p) exit(OVERFLOW);
+    p->no = e1;
+    p->amount = e2;
+    p->remain_amount = e3;
+    p->next = NULL;
+    Q.rear->next = p;
+    Q.rear = p;
+    return OK;
+}
+
+Status DeQueue(LinkQueue& Q, int& e1, double& e2, double& e3)
+{
+    if (Q.front == Q.rear) return ERROR;
+    QueuePtr p;
+    p = Q.front->next;
+    e1 = p->no;
+    e2 = p->amount;
+    e3 = p->remain_amount;
+    Q.front->next = p->next;
+    if (Q.rear == p) Q.rear = Q.front;
+    delete p;
+    return OK;
+}
+
+int MinQueue()
+{
+    int s = 10000, k = 0, temp;
+    for (k = 0;k < window_number;k++)
+    {
+        if (queue_number[k] < s)
+        {
+            temp = k;
+            s = queue_number[k];
+        }
+    }
+    return temp;
+}
+
+int MaxQueue()
+{
+    int s = -1, k = 0, temp;
+    for (k = 0;k < window_number;k++)
+    {
+        if (queue_number[k] > s)
+        {
+            temp = k;
+            s = queue_number[k];
+        }
+    }
+    return temp;
+}
+
+void Remove(LinkQueue& Q)//检查第一个人是否已取完。注意判断队列是否为空。
+{
+    if (!QueueEmpty(Q))
+    {
+        if (Q.front->next->remain_amount <= 1e-8)
+        {
+            int e1 = -1;
+            double e2 = -1, e3 = -1;
+            DeQueue(Q, e1, e2, e3);
+            SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),
+                FOREGROUND_INTENSITY | FOREGROUND_GREEN);//设置绿色
+            cout << "第" << (double)i / 10 + 0.1 << "秒时" << j + 1 << "号窗口"
+                << "第" << e1 << "位客户完成业务，取走共" << e2 << "万元。" << endl;
+            queue_number[j]--;
+        }
+    }
+}
+
+void Join(LinkQueue* q)
+{
+    int a = rand() % 60;
+    //a的值在0-60之间随机分布，只有当a=0到window_number-1时才产生新客户
+    //平均每6秒产生window_number个客户，与窗口数量对应
+    if (a < window_number)
+    {
+        no++;
+        double b = double(rand() % 191) / 10 + 1;//b的值在1-20之间随机分布(精度0.1)，代表用户取钱的金额数（单位：万元）
+        int m = MinQueue();
+        EnQueue(q[m], no, b, b);
+        SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),
+            FOREGROUND_INTENSITY | FOREGROUND_RED | FOREGROUND_GREEN);//设置红色和绿色相加
+        cout << "第" << (double)i / 10 + 0.1 << "秒时第" << no << "位客户进入窗口"
+            << m + 1 << "队列，需取" << b << "万元。" << endl;
+        queue_number[m]++;
+    }
+}
+
+void ChangeQuene(LinkQueue* q)
+{
+    int min = MinQueue(), max = MaxQueue();
+    while (queue_number[max] - queue_number[min] >= 2)
+    {
+        int e1;
+        double e2, e3;
+        DeQueue(q[max], e1, e2, e3);
+        EnQueue(q[min], e1, e2, e3);
+        SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), 
+            FOREGROUND_INTENSITY | FOREGROUND_BLUE);//设置蓝色
+        cout << "第" << e1 << "位客户从窗口" << max + 1 << "队列调整到窗口" << min + 1 << "队列" << endl;
+
+        queue_number[min]++;
+        queue_number[max]--;
+        min = MinQueue();
+        max = MaxQueue();
+    }
+}
+
+void Withdraw(LinkQueue& Q)
+{
+    if (!QueueEmpty(Q) && i != time_length)
+    {
+        Q.front->next->remain_amount -= 0.2;//每0.1秒取走0.2万
+    }
+}
+
+void Undone(LinkQueue& Q)
+{
+    while (!QueueEmpty(Q))
+    {
+        int e1 = -1;
+        double e2 = -1, e3 = -1;
+        DeQueue(Q, e1, e2, e3);
+        SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),
+            FOREGROUND_INTENSITY | FOREGROUND_GREEN | FOREGROUND_BLUE);//设置绿色和蓝色相加
+        cout << "窗口" << j + 1 << "队列第" << e1 <<
+            "位客户未完成业务，未取共" << e2 << "万元。" << endl;
+    }
+}
+
+int main()
+{
+    cout << "请输入模拟程序运行时长（单位：秒）（1-300之间的整数）：" << endl;
+    //time_length = 120;
+    cin >> time_length;
+    while (time_length <= 0 || time_length > 300)
+    {
+        cout << "您输入的时间不符合要求，请重新输入：";
+        cin >> time_length;
+    }
+
+    cout << "请输入银行窗口数（1-10之间的整数）：" << endl;
+    cin >> window_number;
+    while (window_number <= 0 || window_number > 10)
+    {
+        cout << "您输入的窗口数不符合要求，请重新输入：";
+        cin >> window_number;
+    }
+
+    LinkQueue* q = (LinkQueue*)malloc(window_number * sizeof(LinkQueue));
+
+    //队列初始化
+    for (j = 0;j < window_number;j++)
+    {
+        InitQueue(q[j]);
+    }
+
+    srand(time(nullptr));//设置随机数种子
+
+    //核心代码
+    for (i = 0;i <= time_length * 10;i++)//每0.1秒循环一次，直到到达预定时间
+    {
+        //先检查第一个人是否已取完。注意判断队列是否为空
+        for (j = 0;j < window_number;j++)
+        {
+            Remove(q[j]);
+        }
+
+        //再把新客户加到人最少的队伍
+        Join(q);
+
+        //再判定是否有客户需要重新选择队列
+        ChangeQuene(q);
+
+        //再给当前队伍第一位取钱，注意判断队列是否为空
+        //注意i=time_length时取钱业务已经停止
+        for (j = 0;j < window_number;j++)
+        {
+            Withdraw(q[j]);
+        }
+
+        Sleep(93);
+        //100单位为毫秒，即0.1秒。考虑到程序运行时间，将100改为93
+        //由于Sleep()函数的精度不高，因此循环间隔不能太小
+    }
+
+    //程序结束前，输出未取完钱的人的情况
+    SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),
+        FOREGROUND_INTENSITY);//设置颜色，没有添加颜色，故为原色
+    cout << endl << "取钱业务结束。" << endl << endl;
+    for (j = 0;j < window_number;j++)
+    {
+        Undone(q[j]);
+    }
+
+    SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),
+        FOREGROUND_INTENSITY);//设置颜色，没有添加颜色，故为原色
+    return 0;
+}