所以我必须写这个来模拟运行相同操作的两台服务器上的队列，以比较一个商店是否需要雇佣第二个收银员，具体取决于模拟运行的效率。单个队列，单个服务器，单个队列，两个服务器。我在main编写所有代码，而不是创建其他类和调用/扩展，因为JAVA不是我强大的套件，我需要花费大量时间来编写这些东西并编写非常简单的代码，因此它会变得很长可以看到。根据你看到的内容，有没有人可以给我的指示，以帮助我简化这一点？在方法，构造函数或类，可以减少的行或代码组中，是否更有效？这虽然符合预期的效果。如果这不是要求或不正确的问题的正确方法，我道歉，我会删除它。提前致谢。
public class SimulationProject1 {
private static int poissonDistr(double mean) {
Random x = new Random();
double J = Math.exp(-mean);
int i = 0;
double pD = 1.0;
do {
pD = pD * x.nextDouble();
i++;
} while (pD > J);
return i - 1;
}
public class listNode {
int data;
listNode next;
public listNode(int data) {
this.data = data;
this.next = null;
}
}
private final listNode head;
public SimulationProject1() {
this.head = null;
}
public boolean isEmpty() {
return (this.head == null);
}
public int getFirst() {
return head.data;
}
public static class LinkedQueue extends SimulationProject1 {
int size;
int totalTime;
private class Node {
int items;
int waitTime;
int dead;
Node next;
public Node(int items) {
this.items = items;
waitTime = 0;
dead = 0;
size++;
this.next = null;
}
}
private Node head;
public void enqueue(int items) {
if (head == null) {
head = new Node(items);
} else {
Node tmp = head;
while (tmp.next != null) {
tmp = tmp.next;
}
tmp.next = new Node(items);
}
this.size++;
}
public void dequeue() {
if (this.head == null) {
System.out.println("No customers in line");
} else {
this.head = head.next;
}
this.size--;
}
public void setWaitTime() {
Node temp = head;
while (temp != null) {
temp.waitTime++;
temp = temp.next;
}
}
public void getWaitTime() {
Node temp = head;
if(temp != null){
while (temp != null) {
totalTime = temp.waitTime + totalTime;
System.out.println("Total wait time: " + totalTime);
temp = temp.next;
}
}else{
System.out.println("Noone's waiting..");
}
}
public void setTimeout() {
Node temp = head;
while (temp != null) {
if (temp.waitTime >= 8) {
temp.dead = 1;
this.size--;
} else if (temp.waitTime <= 8) {
temp.waitTime++;
}
temp = temp.next;
}
}
}
public static void oneServer(LinkedQueue line, LinkedQueue cashier) {
int cost = 0;
int profit = 0;
int timedOut = 0;
int inLine = 0;
double mean = 0.2;
int [] customersServiced = new int[50];
int [] customerWaitTime = new int[50];
int [] customersInLine = new int[50];
int [] profitData = new int[50];
int [] costData = new int[50];
for (int i = 0; i < 50; i++) {
cost = cost - 3;
for (int j = 0; j < poissonDistr(mean); j++) {
System.out.println("Customers Arriving");
int items = (int) (Math.random() * 6 + 2);
line.enqueue(items);
}
if (line.head != null && line.head.dead == 1) {
timedOut++;
line.dequeue();
cost = cost - 10;
}
if (cashier.head == null && line.head != null && line.head.dead == 0) {
System.out.println("Line Moving");
cashier.head = line.head;
line.head = line.head.next;
}
if (cashier.head != null && cashier.head.items > 0) {
cashier.head.items--;
} else if (cashier.head != null && cashier.head.items <= 0) {
System.out.println("Available");
profit++;
cashier.head = null;
}
line.setWaitTime();
line.setTimeout();
System.out.println("Number currently in line: " + line.size);
customersInLine[i] = line.size;
line.getWaitTime();
customerWaitTime[i] = line.totalTime;
System.out.println("Customers serviced: " + profit);
customersServiced[i] = profit;
profitData[i] = profit;
costData[i] = cost;
}
while (line.head != null) {
line.head = line.head.next;
inLine++;
}
System.out.println("\n" + "-------------------------Stats-----------------------------" + "\n" + "Cost: " +
cost + "\nPer iteration: " + Arrays.toString(costData) + "\n");
System.out.println("Profit: " + profit + "\nPer iteration: " + Arrays.toString(profitData) + "\n");
System.out.println("In the line: " + inLine + "\nAccrued per iteration: " + Arrays.toString(customersInLine) + "\n");
System.out.println("Timed out: " + timedOut + "\n");
System.out.println("Total wait time: " + line.totalTime + "\nPer iteration: " + Arrays.toString(customerWaitTime) + "\n");
}
public static void twoServer(LinkedQueue line, LinkedQueue cashier, LinkedQueue cashier2) {
int cost = 0;
int profit = 0;
int timedOut = 0;
int inLine = 0;
double mean = 0.2;
int[] customersServiced = new int[50];
int[] customerWaitTime = new int[50];
int[] customersInLine = new int[50];
int[] profitData = new int[50];
int[] costData = new int[50];
for (int i = 0; i < 50; i++) {
cost = cost - 6;
for (int j = 0; j < poissonDistr(mean); j++) {
System.out.println("Customers Arriving");
int items = (int) (Math.random() * 6 + 2);
line.enqueue(items);
}
if (line.head != null && line.head.dead == 1) {
timedOut++;
line.dequeue();
cost = cost - 10;
}
if (cashier.head == null && line.head != null && line.head.dead == 0) {
System.out.println("Line Moving");
cashier.head = line.head;
line.head = line.head.next;
}
if (cashier2.head == null && line.head != null && line.head.dead == 0) {
System.out.println("Line Moving");
cashier2.head = line.head;
line.head = line.head.next;
}
if (cashier.head != null && cashier.head.items > 0) {
cashier.head.items--;
} else if (cashier.head != null && cashier.head.items <= 0) {
System.out.println("Available");
profit++;
cashier.head = null;
}
if (cashier2.head != null && cashier2.head.items > 0) {
cashier2.head.items--;
} else if (cashier2.head != null && cashier2.head.items <= 0) {
System.out.println("Available");
profit++;
cashier2.head = null;
}
line.setWaitTime();
line.setTimeout();
System.out.println("Number currently in line: " + line.size);
customersInLine[i] = line.size;
line.getWaitTime();
customerWaitTime[i] = line.totalTime;
System.out.println("Customers serviced: " + profit);
customersServiced[i] = profit;
profitData[i] = profit;
costData[i] = cost;
}
while (line.head != null) {
line.head = line.head.next;
inLine++;
}
System.out.println("\n" + "-------------------------Stats-----------------------------" + "\n" +
"Cost: " + cost + "\nPer iteration: " + Arrays.toString(costData) + "\n");
System.out.println("Profit: " + profit + "\nPer iteration: " + Arrays.toString(profitData) + "\n");
System.out.println("In the line: " + inLine + "\nAccrued per iteration: " + Arrays.toString(customersInLine) + "\n");
System.out.println("Timed out: " + timedOut + "\n");
System.out.println("Total wait time: " + line.totalTime + "\nPer iteration: " + Arrays.toString(customerWaitTime) + "\n");
}
public static void main(String[] args) {
LinkedQueue line = new LinkedQueue();
LinkedQueue line2 = new LinkedQueue();
LinkedQueue cashier = new LinkedQueue();
LinkedQueue cashier2 = new LinkedQueue();
oneServer(line, cashier);
System.out.println("-------------------------Double Server------------------------------------");
twoServer(line2, cashier, cashier2);
}
}
输出太大而无法发布，它有类似的东西 数字在行 目前在等待 目前服务 成本 失利 利润 等