Question

我正在进行一项课程作业，让我们创建一个系统来模拟十字路口的车辆。我们假设每个方向都有一条车道，每个方向都有一个停车灯。我们必须改变每个方向上车辆的到达平均值以及灯光变化的频率来查看＆＃34;行为＆＃34;交叉口。

我尽了最大的努力，但仍然是Java的新手，我似乎犯了一个错误，我花了很长时间才弄明白。基本上，我在程序底部的输出不会输出任何内容。

我目前也被认为输出会输出我想要的东西，这显然需要我的其余代码是合理的。

话虽如此，如果有人能够发现我的错误导致我的代码无法输出所有内容，或者其他任何引起你注意的内容，那么我会非常感激。

import java.util.*;

public class Intersection
{
private final static int PROCESS = 3;
private final static int SIM_LENGTH = 1000;

@SuppressWarnings("resource")
public static void main(String[] args) 
   {
          Car car = new Car();

          Deque<Car> carQueue = new LinkedList<Car>();

          int delayTotal = 0, carArrival, lightChange = 0, switchCount = 0, changeCount = 0;
          double carCount;
          boolean even = false;
          String lightColor, green = null, red = null;


              Scanner scan = new Scanner(System.in);

              System.out.println("Enter in a car arrival interval between 1 and 5 seconds." + "\n");
              carArrival = scan.nextInt();

              if (!(carArrival < 6 && carArrival > 0))
                  System.out.println("Enter a valid time." + "\n");

              Scanner sc = new Scanner(System.in);

              System.out.println("Enter in a traffic light duration between 5 and 10 seconds." + "\n");
              lightChange = sc.nextInt();


              if (!(lightChange < 11 && lightChange > 4))
                  System.out.println("Enter a valid time." + "\n");

              //add a car to the queue every [carArrival] seconds
              for (int i = 0; i < SIM_LENGTH; i+= carArrival)
                  {
                    carQueue.add(car);
                  }


              //Develop a way for the program to know that SIM_LENGTH has
              //counted 'lightChange' seconds.
              //Count each time lightChange occurs

              for (int i = 0; i < SIM_LENGTH; i++)
              {
                  if (i % lightChange == 0)
                  {
                     changeCount++;
                  }
              }


            //Assuming light starts as red, every time the preceding count increases by 1,
            //switch lightColor.
            //if count % 2 == 0, return green light; else red light

              if (changeCount % 2 == 0)
              {
                  even = true;
              }


              if (even)
                  {
                  lightColor = green;
                  }
              else
                  {
                  lightColor = red;
                  }

              while (lightColor == green)
              {
                    //remove a car from the queue every [PROCESS] seconds
                    //(PROCESS is time to pass intersection)

                      for (int i = 0; i < SIM_LENGTH; i+= PROCESS)
                      {
                          carQueue.remove(car);
                      }

                      //I increment 'switchCount so I can use it as a divisor
                      //for delayTotal to find the delayAverage

                      switchCount++;
              }
              //Trying to increment delay time (cars are immobilized by red light)
              delayTotal += lightChange;


          //carCount Example:
          //lightChange = 6; PROCESS = 3; switchCount =166.7 times
          //carCount = 333.4 cars; obviously I need it to a whole number

          carCount = (lightChange / PROCESS) * switchCount; 

          int delayAverage = delayTotal/switchCount;
          int stranded = carQueue.size();

          System.out.println("Cars across: " + carCount);
          System.out.println("Delay (tot): " + delayTotal);
          System.out.println("Delay (avg): " + delayAverage);
          System.out.println("Number stranded: " + stranded);

   }

}

程序无法正确输出数据

0 个答案: