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Graham O Connor
6,551 PointsNeed help with multi-threading assignment (Buyer/Seller) in java eclipse
I must implement my run methods for buyer and seller in such a way that the buyer doesn't immediately buy from carshowroom list after appearing and seller doesn't immediately sell a car after showing up on list.
Below is my code and the output for it
package Assignment2Multithreading;
import java.util.Random;
public class Main {
public static void main(String args[]) throws InterruptedException {
CarShowroom c = new CarShowroom();
for(int i = 1; i<=30; i++) {
Seller s = new Seller(c);
Buyer b = new Buyer(c);
if(c.numCarsInShowroom() == 1) {
System.out.println("\nDay " + String.valueOf(i) + " There is one car in the show room today.\n");
}
else {
System.out.println("\nDay " + String.valueOf(i) + " There are " + c.numCarsInShowroom() + " cars in the show room today.\n");
}
s.init();
b.init();
Thread.sleep(1000);
}
}
}
package Assignment2Multithreading;
import java.util.ArrayList; import java.util.Random; import java.util.concurrent.atomic.AtomicInteger;
public class CarShowroom {
public static final int fullCapacity = 10;
private ArrayList<Car> carList= new ArrayList<Car>();
AtomicInteger saleNumber = new AtomicInteger();
public CarShowroom() {
}
public boolean isEmpty() {
if(this.carList.isEmpty()) {
return true;
}
return false;
}
public boolean isFull() {
if(carList.size() == fullCapacity) {
return true;
}
return false;
}
public synchronized void addCar(Car c) {
carList.add(c);
}
public synchronized Car takeCar() {
Car car = carList.remove(0);
return car;
}
public int numCarsInShowroom() {
return carList.size();
}
}
package Assignment2Multithreading;
import java.util.Random; import java.util.concurrent.atomic.AtomicInteger;
public class Seller implements Runnable{
CarShowroom carshowroom;
public Car car;
Random rand = new Random();
int numSale;
private static AtomicInteger sellerID = new AtomicInteger(0);
private static AtomicInteger saleNumber = new AtomicInteger(0);
//private static long sellerID = 0;
/*public static synchronized String createSellerID()
{
return String.valueOf(++sellerID);
} */
public Seller() {
this.carshowroom = new CarShowroom();
this.car = new Car();
}
public Seller(CarShowroom c) {
this.carshowroom = c;
this.car = new Car();
}
public void init() {
Thread t;
int n = rand.nextInt(3)+ 1;
for(int i =0 ; i< n; i++) {
t = new Thread(this);
t.start();
}
}
public void run() {
synchronized(carshowroom) {
try {
sellerID.getAndIncrement();
System.out.println("A new seller # " + sellerID + " just appeared with " + car + " to sell.");
while(carshowroom.isFull()) {
System.out.println("Seller # "+ sellerID + " is trying to sell a car but the showroom is full.");
carshowroom.wait();
}
Thread.sleep(20);
carshowroom.addCar(car);
saleNumber.getAndIncrement();
System.out.println("Seller # "+ sellerID + " sold "+ car);
System.out.println("This is sale number " + saleNumber);
//wait(1000);
carshowroom.notifyAll();
}catch(Exception e) {
e.printStackTrace();
}
}
}
}
package Assignment2Multithreading;
import java.util.Random; import java.util.UUID; import java.util.concurrent.atomic.AtomicInteger;
public class Buyer implements Runnable{
CarShowroom carshowroom;
private static AtomicInteger newPurchase = new AtomicInteger(0);
private static AtomicInteger buyerID = new AtomicInteger(0);
Random rand = new Random();
Car car;
public Buyer() {
this.carshowroom = new CarShowroom();
}
public Buyer(CarShowroom c) {
this.carshowroom = c;
}
public void init() { // we create the threads from within a method in the task class (that's fine)
Thread t;
int n = rand.nextInt(3) + 1;
for(int j=0 ; j< n; j++) {
t = new Thread(this);
t.start();
}
}
public void run() {
synchronized(carshowroom){
try {
buyerID.getAndIncrement();
System.out.println("A new buyer # " + buyerID + " has appeared");
while(carshowroom.isEmpty()) {
System.out.println("Buyer # " + buyerID + " is trying to buy a car but the showroom is empty.");
carshowroom.wait();
}
Thread.sleep(20);
Car car = carshowroom.takeCar();
newPurchase.getAndIncrement();
System.out.println("Buyer # " + buyerID + " bought " + car);
System.out.println("This is purchase number " + newPurchase);
carshowroom.notifyAll();
}catch(Exception e) {
e.printStackTrace();
}
}
}
}
Day 1 There are 0 cars in the show room today.
A new seller # 1 just appeared with yellow car with registration 39-KY-8621 worth €16299 to sell. Seller # 1 sold yellow car with registration 39-KY-8621 worth €16299 This is sale number 1 A new buyer # 1 has appeared Buyer # 1 bought yellow car with registration 39-KY-8621 worth €16299 This is purchase number 1 A new buyer # 2 has appeared Buyer # 2 is trying to buy a car but the showroom is empty. A new seller # 2 just appeared with yellow car with registration 39-KY-8621 worth €16299 to sell. Seller # 2 sold yellow car with registration 39-KY-8621 worth €16299 This is sale number 2 Buyer # 2 bought yellow car with registration 39-KY-8621 worth €16299 This is purchase number 2
Day 2 There are 0 cars in the show room today.
A new seller # 3 just appeared with black car with registration 83-CE-1538 worth €13490 to sell. Seller # 3 sold black car with registration 83-CE-1538 worth €13490 This is sale number 3 A new buyer # 3 has appeared Buyer # 3 bought black car with registration 83-CE-1538 worth €13490 This is purchase number 3
Day 3 There are 0 cars in the show room today.
A new seller # 4 just appeared with yellow car with registration 84-LH-318 worth €3570 to sell. Seller # 4 sold yellow car with registration 84-LH-318 worth €3570 This is sale number 4 A new buyer # 4 has appeared Buyer # 4 bought yellow car with registration 84-LH-318 worth €3570 This is purchase number 4 A new buyer # 5 has appeared Buyer # 5 is trying to buy a car but the showroom is empty. A new seller # 5 just appeared with yellow car with registration 84-LH-318 worth €3570 to sell. Seller # 5 sold yellow car with registration 84-LH-318 worth €3570 This is sale number 5 A new seller # 6 just appeared with yellow car with registration 84-LH-318 worth €3570 to sell. Seller # 6 sold yellow car with registration 84-LH-318 worth €3570 This is sale number 6 Buyer # 5 bought yellow car with registration 84-LH-318 worth €3570 This is purchase number 5
Day 4 There is one car in the show room today.
A new seller # 7 just appeared with black car with registration 72-T-5799 worth €613 to sell. Seller # 7 sold black car with registration 72-T-5799 worth €613 This is sale number 7 A new buyer # 6 has appeared Buyer # 6 bought yellow car with registration 84-LH-318 worth €3570 This is purchase number 6 A new buyer # 7 has appeared Buyer # 7 bought black car with registration 72-T-5799 worth €613 This is purchase number 7
Day 5 There are 0 cars in the show room today.
A new seller # 8 just appeared with black car with registration 47-OY-5300 worth €9291 to sell. Seller # 8 sold black car with registration 47-OY-5300 worth €9291 This is sale number 8 A new buyer # 8 has appeared Buyer # 8 bought black car with registration 47-OY-5300 worth €9291 This is purchase number 8 A new buyer # 9 has appeared Buyer # 9 is trying to buy a car but the showroom is empty. A new buyer # 10 has appeared Buyer # 10 is trying to buy a car but the showroom is empty. A new seller # 9 just appeared with black car with registration 47-OY-5300 worth €9291 to sell. Seller # 9 sold black car with registration 47-OY-5300 worth €9291 This is sale number 9 Buyer # 10 bought black car with registration 47-OY-5300 worth €9291 This is purchase number 9 Buyer # 10 is trying to buy a car but the showroom is empty.
Day 6 There are 0 cars in the show room today.
A new seller # 10 just appeared with blue car with registration 67-WH-9581 worth €4976 to sell. Seller # 10 sold blue car with registration 67-WH-9581 worth €4976 This is sale number 10 Buyer # 10 bought blue car with registration 67-WH-9581 worth €4976 This is purchase number 10 A new buyer # 11 has appeared Buyer # 11 is trying to buy a car but the showroom is empty. A new buyer # 12 has appeared Buyer # 12 is trying to buy a car but the showroom is empty.
Day 7 There are 0 cars in the show room today.
A new seller # 11 just appeared with black car with registration 5-WH-1705 worth €9466 to sell. Seller # 11 sold black car with registration 5-WH-1705 worth €9466 This is sale number 11 Buyer # 12 bought black car with registration 5-WH-1705 worth €9466 This is purchase number 11 Buyer # 12 is trying to buy a car but the showroom is empty. A new buyer # 13 has appeared Buyer # 13 is trying to buy a car but the showroom is empty. A new buyer # 14 has appeared Buyer # 14 is trying to buy a car but the showroom is empty. A new seller # 12 just appeared with black car with registration 5-WH-1705 worth €9466 to sell. Seller # 12 sold black car with registration 5-WH-1705 worth €9466 This is sale number 12 A new seller # 13 just appeared with black car with registration 5-WH-1705 worth €9466 to sell. Seller # 13 sold black car with registration 5-WH-1705 worth €9466 This is sale number 13 Buyer # 14 bought black car with registration 5-WH-1705 worth €9466 This is purchase number 12 Buyer # 14 bought black car with registration 5-WH-1705 worth €9466 This is purchase number 13 Buyer # 14 is trying to buy a car but the showroom is empty.
Day 8 There are 0 cars in the show room today.
A new seller # 14 just appeared with red car with registration 60-LH-2011 worth €12711 to sell. Seller # 14 sold red car with registration 60-LH-2011 worth €12711 This is sale number 14 Buyer # 14 bought red car with registration 60-LH-2011 worth €12711 This is purchase number 14 A new buyer # 15 has appeared Buyer # 15 is trying to buy a car but the showroom is empty. A new buyer # 16 has appeared Buyer # 16 is trying to buy a car but the showroom is empty. A new seller # 15 just appeared with red car with registration 60-LH-2011 worth €12711 to sell. Seller # 15 sold red car with registration 60-LH-2011 worth €12711 This is sale number 15 A new seller # 16 just appeared with red car with registration 60-LH-2011 worth €12711 to sell. Seller # 16 sold red car with registration 60-LH-2011 worth €12711 This is sale number 16 Buyer # 16 bought red car with registration 60-LH-2011 worth €12711 This is purchase number 15 Buyer # 16 bought red car with registration 60-LH-2011 worth €12711 This is purchase number 16
Day 9 There are 0 cars in the show room today.
A new seller # 17 just appeared with blue car with registration 91-LS-9839 worth €5057 to sell. Seller # 17 sold blue car with registration 91-LS-9839 worth €5057 This is sale number 17 A new buyer # 17 has appeared Buyer # 17 bought blue car with registration 91-LS-9839 worth €5057 This is purchase number 17 A new seller # 18 just appeared with blue car with registration 91-LS-9839 worth €5057 to sell. Seller # 18 sold blue car with registration 91-LS-9839 worth €5057 This is sale number 18
Day 10 There is one car in the show room today.
A new seller # 19 just appeared with green car with registration 51-OY-7800 worth €17830 to sell. Seller # 19 sold green car with registration 51-OY-7800 worth €17830 This is sale number 19 A new buyer # 18 has appeared Buyer # 18 bought blue car with registration 91-LS-9839 worth €5057 This is purchase number 18
Day 11 There is one car in the show room today.
A new seller # 20 just appeared with blue car with registration 52-WH-5776 worth €4073 to sell. Seller # 20 sold blue car with registration 52-WH-5776 worth €4073 This is sale number 20 A new buyer # 19 has appeared Buyer # 19 bought green car with registration 51-OY-7800 worth €17830 This is purchase number 19 A new buyer # 20 has appeared Buyer # 20 bought blue car with registration 52-WH-5776 worth €4073 This is purchase number 20 A new buyer # 21 has appeared Buyer # 21 is trying to buy a car but the showroom is empty. A new seller # 21 just appeared with blue car with registration 52-WH-5776 worth €4073 to sell. Seller # 21 sold blue car with registration 52-WH-5776 worth €4073 This is sale number 21 Buyer # 21 bought blue car with registration 52-WH-5776 worth €4073 This is purchase number 21
Day 12 There are 0 cars in the show room today.
A new seller # 22 just appeared with black car with registration 73-W-216 worth €3267 to sell. Seller # 22 sold black car with registration 73-W-216 worth €3267 This is sale number 22 A new buyer # 22 has appeared Buyer # 22 bought black car with registration 73-W-216 worth €3267 This is purchase number 22
Day 13 There are 0 cars in the show room today.
A new seller # 23 just appeared with silver car with registration 97-KY-673 worth €151 to sell. Seller # 23 sold silver car with registration 97-KY-673 worth €151 This is sale number 23 A new buyer # 23 has appeared Buyer # 23 bought silver car with registration 97-KY-673 worth €151 This is purchase number 23 A new buyer # 24 has appeared Buyer # 24 is trying to buy a car but the showroom is empty.
Day 14 There are 0 cars in the show room today.
A new seller # 24 just appeared with green car with registration 46-KK-4063 worth €5568 to sell. Seller # 24 sold green car with registration 46-KK-4063 worth €5568 This is sale number 24 Buyer # 24 bought green car with registration 46-KK-4063 worth €5568 This is purchase number 24 A new buyer # 25 has appeared Buyer # 25 is trying to buy a car but the showroom is empty. A new buyer # 26 has appeared Buyer # 26 is trying to buy a car but the showroom is empty. A new buyer # 27 has appeared Buyer # 27 is trying to buy a car but the showroom is empty. A new seller # 25 just appeared with green car with registration 46-KK-4063 worth €5568 to sell. Seller # 25 sold green car with registration 46-KK-4063 worth €5568 This is sale number 25 A new seller # 26 just appeared with green car with registration 46-KK-4063 worth €5568 to sell. Seller # 26 sold green car with registration 46-KK-4063 worth €5568 This is sale number 26 Buyer # 27 bought green car with registration 46-KK-4063 worth €5568 This is purchase number 25 Buyer # 27 bought green car with registration 46-KK-4063 worth €5568 This is purchase number 26 Buyer # 27 is trying to buy a car but the showroom is empty.
Day 15 There are 0 cars in the show room today.
A new seller # 27 just appeared with silver car with registration 17-LH-6046 worth €12063 to sell. Seller # 27 sold silver car with registration 17-LH-6046 worth €12063 This is sale number 27 Buyer # 27 bought silver car with registration 17-LH-6046 worth €12063 This is purchase number 27 A new buyer # 28 has appeared Buyer # 28 is trying to buy a car but the showroom is empty. A new buyer # 29 has appeared Buyer # 29 is trying to buy a car but the showroom is empty. A new buyer # 30 has appeared Buyer # 30 is trying to buy a car but the showroom is empty. A new seller # 28 just appeared with silver car with registration 17-LH-6046 worth €12063 to sell. Seller # 28 sold silver car with registration 17-LH-6046 worth €12063 This is sale number 28 A new seller # 29 just appeared with silver car with registration 17-LH-6046 worth €12063 to sell. Seller # 29 sold silver car with registration 17-LH-6046 worth €12063 This is sale number 29 Buyer # 30 bought silver car with registration 17-LH-6046 worth €12063 This is purchase number 28 Buyer # 30 bought silver car with registration 17-LH-6046 worth €12063 This is purchase number 29 Buyer # 30 is trying to buy a car but the showroom is empty.
Day 16 There are 0 cars in the show room today.
A new seller # 30 just appeared with yellow car with registration 61-W-7827 worth €2743 to sell. Seller # 30 sold yellow car with registration 61-W-7827 worth €2743 This is sale number 30 Buyer # 30 bought yellow car with registration 61-W-7827 worth €2743 This is purchase number 30 A new buyer # 31 has appeared Buyer # 31 is trying to buy a car but the showroom is empty. A new buyer # 32 has appeared Buyer # 32 is trying to buy a car but the showroom is empty. A new buyer # 33 has appeared Buyer # 33 is trying to buy a car but the showroom is empty.
Day 17 There are 0 cars in the show room today.
A new seller # 31 just appeared with green car with registration 67-MH-4999 worth €2728 to sell. Seller # 31 sold green car with registration 67-MH-4999 worth €2728 This is sale number 31 Buyer # 33 bought green car with registration 67-MH-4999 worth €2728 This is purchase number 31 Buyer # 33 is trying to buy a car but the showroom is empty. Buyer # 33 is trying to buy a car but the showroom is empty. A new buyer # 34 has appeared Buyer # 34 is trying to buy a car but the showroom is empty. A new seller # 32 just appeared with green car with registration 67-MH-4999 worth €2728 to sell. Seller # 32 sold green car with registration 67-MH-4999 worth €2728 This is sale number 32 Buyer # 34 bought green car with registration 67-MH-4999 worth €2728 This is purchase number 32 Buyer # 34 is trying to buy a car but the showroom is empty. Buyer # 34 is trying to buy a car but the showroom is empty.
Day 18 There are 0 cars in the show room today.
A new seller # 33 just appeared with black car with registration 61-C-8774 worth €10371 to sell. Seller # 33 sold black car with registration 61-C-8774 worth €10371 This is sale number 33 Buyer # 34 bought black car with registration 61-C-8774 worth €10371 This is purchase number 33 Buyer # 34 is trying to buy a car but the showroom is empty. A new buyer # 35 has appeared Buyer # 35 is trying to buy a car but the showroom is empty. A new seller # 34 just appeared with black car with registration 61-C-8774 worth €10371 to sell. Seller # 34 sold black car with registration 61-C-8774 worth €10371 This is sale number 34 A new seller # 35 just appeared with black car with registration 61-C-8774 worth €10371 to sell. Seller # 35 sold black car with registration 61-C-8774 worth €10371 This is sale number 35 Buyer # 35 bought black car with registration 61-C-8774 worth €10371 This is purchase number 34 Buyer # 35 bought black car with registration 61-C-8774 worth €10371 This is purchase number 35
Day 19 There are 0 cars in the show room today.
A new seller # 36 just appeared with blue car with registration 94-CW-4050 worth €17974 to sell. Seller # 36 sold blue car with registration 94-CW-4050 worth €17974 This is sale number 36 A new buyer # 36 has appeared Buyer # 36 bought blue car with registration 94-CW-4050 worth €17974 This is purchase number 36 A new seller # 37 just appeared with blue car with registration 94-CW-4050 worth €17974 to sell. Seller # 37 sold blue car with registration 94-CW-4050 worth €17974 This is sale number 37 A new seller # 38 just appeared with blue car with registration 94-CW-4050 worth €17974 to sell. Seller # 38 sold blue car with registration 94-CW-4050 worth €17974 This is sale number 38
Day 20 There are 2 cars in the show room today.
A new seller # 39 just appeared with black car with registration 97-DL-8187 worth €14071 to sell. Seller # 39 sold black car with registration 97-DL-8187 worth €14071 This is sale number 39 A new buyer # 37 has appeared Buyer # 37 bought blue car with registration 94-CW-4050 worth €17974 This is purchase number 37 A new buyer # 38 has appeared Buyer # 38 bought blue car with registration 94-CW-4050 worth €17974 This is purchase number 38 A new seller # 40 just appeared with black car with registration 97-DL-8187 worth €14071 to sell. Seller # 40 sold black car with registration 97-DL-8187 worth €14071 This is sale number 40 A new seller # 41 just appeared with black car with registration 97-DL-8187 worth €14071 to sell. Seller # 41 sold black car with registration 97-DL-8187 worth €14071 This is sale number 41
Day 21 There are 3 cars in the show room today.
A new seller # 42 just appeared with green car with registration 72-WX-7080 worth €2507 to sell. Seller # 42 sold green car with registration 72-WX-7080 worth €2507 This is sale number 42 A new buyer # 39 has appeared Buyer # 39 bought black car with registration 97-DL-8187 worth €14071 This is purchase number 39 A new buyer # 40 has appeared Buyer # 40 bought black car with registration 97-DL-8187 worth €14071 This is purchase number 40 A new seller # 43 just appeared with green car with registration 72-WX-7080 worth €2507 to sell. Seller # 43 sold green car with registration 72-WX-7080 worth €2507 This is sale number 43 A new seller # 44 just appeared with green car with registration 72-WX-7080 worth €2507 to sell. Seller # 44 sold green car with registration 72-WX-7080 worth €2507 This is sale number 44
Day 22 There are 4 cars in the show room today.
A new seller # 45 just appeared with black car with registration 43-T-9191 worth €2317 to sell. Seller # 45 sold black car with registration 43-T-9191 worth €2317 This is sale number 45 A new buyer # 41 has appeared Buyer # 41 bought black car with registration 97-DL-8187 worth €14071 This is purchase number 41 A new buyer # 42 has appeared Buyer # 42 bought green car with registration 72-WX-7080 worth €2507 This is purchase number 42 A new buyer # 43 has appeared Buyer # 43 bought green car with registration 72-WX-7080 worth €2507 This is purchase number 43 A new seller # 46 just appeared with black car with registration 43-T-9191 worth €2317 to sell. Seller # 46 sold black car with registration 43-T-9191 worth €2317 This is sale number 46 A new seller # 47 just appeared with black car with registration 43-T-9191 worth €2317 to sell. Seller # 47 sold black car with registration 43-T-9191 worth €2317 This is sale number 47
Day 23 There are 4 cars in the show room today.
A new seller # 48 just appeared with black car with registration 92-KY-5722 worth €15709 to sell. Seller # 48 sold black car with registration 92-KY-5722 worth €15709 This is sale number 48 A new buyer # 44 has appeared Buyer # 44 bought green car with registration 72-WX-7080 worth €2507 This is purchase number 44 A new buyer # 45 has appeared Buyer # 45 bought black car with registration 43-T-9191 worth €2317 This is purchase number 45 A new buyer # 46 has appeared Buyer # 46 bought black car with registration 43-T-9191 worth €2317 This is purchase number 46 A new seller # 49 just appeared with black car with registration 92-KY-5722 worth €15709 to sell. Seller # 49 sold black car with registration 92-KY-5722 worth €15709 This is sale number 49
Day 24 There are 3 cars in the show room today.
A new seller # 50 just appeared with silver car with registration 49-T-5853 worth €4769 to sell. Seller # 50 sold silver car with registration 49-T-5853 worth €4769 This is sale number 50 A new buyer # 47 has appeared Buyer # 47 bought black car with registration 43-T-9191 worth €2317 This is purchase number 47 A new buyer # 48 has appeared Buyer # 48 bought black car with registration 92-KY-5722 worth €15709 This is purchase number 48 A new seller # 51 just appeared with silver car with registration 49-T-5853 worth €4769 to sell. Seller # 51 sold silver car with registration 49-T-5853 worth €4769 This is sale number 51 A new seller # 52 just appeared with silver car with registration 49-T-5853 worth €4769 to sell. Seller # 52 sold silver car with registration 49-T-5853 worth €4769 This is sale number 52
Day 25 There are 4 cars in the show room today.
A new seller # 53 just appeared with green car with registration 56-KY-4864 worth €5720 to sell. Seller # 53 sold green car with registration 56-KY-4864 worth €5720 This is sale number 53 A new buyer # 49 has appeared Buyer # 49 bought black car with registration 92-KY-5722 worth €15709 This is purchase number 49 A new buyer # 50 has appeared Buyer # 50 bought silver car with registration 49-T-5853 worth €4769 This is purchase number 50 A new buyer # 51 has appeared Buyer # 51 bought silver car with registration 49-T-5853 worth €4769 This is purchase number 51 A new seller # 54 just appeared with green car with registration 56-KY-4864 worth €5720 to sell. Seller # 54 sold green car with registration 56-KY-4864 worth €5720 This is sale number 54
Day 26 There are 3 cars in the show room today.
A new seller # 55 just appeared with red car with registration 11-C-7501 worth €9980 to sell. Seller # 55 sold red car with registration 11-C-7501 worth €9980 This is sale number 55 A new buyer # 52 has appeared Buyer # 52 bought silver car with registration 49-T-5853 worth €4769 This is purchase number 52 A new buyer # 53 has appeared Buyer # 53 bought green car with registration 56-KY-4864 worth €5720 This is purchase number 53 A new seller # 56 just appeared with red car with registration 11-C-7501 worth €9980 to sell. Seller # 56 sold red car with registration 11-C-7501 worth €9980 This is sale number 56 A new seller # 57 just appeared with red car with registration 11-C-7501 worth €9980 to sell. Seller # 57 sold red car with registration 11-C-7501 worth €9980 This is sale number 57
Day 27 There are 4 cars in the show room today.
A new seller # 58 just appeared with blue car with registration 75-WH-5889 worth €12907 to sell. Seller # 58 sold blue car with registration 75-WH-5889 worth €12907 This is sale number 58 A new buyer # 54 has appeared Buyer # 54 bought green car with registration 56-KY-4864 worth €5720 This is purchase number 54 A new seller # 59 just appeared with blue car with registration 75-WH-5889 worth €12907 to sell. Seller # 59 sold blue car with registration 75-WH-5889 worth €12907 This is sale number 59 A new seller # 60 just appeared with blue car with registration 75-WH-5889 worth €12907 to sell. Seller # 60 sold blue car with registration 75-WH-5889 worth €12907 This is sale number 60
Day 28 There are 6 cars in the show room today.
A new seller # 61 just appeared with blue car with registration 36-LD-7452 worth €17871 to sell. Seller # 61 sold blue car with registration 36-LD-7452 worth €17871 This is sale number 61 A new buyer # 55 has appeared Buyer # 55 bought red car with registration 11-C-7501 worth €9980 This is purchase number 55 A new buyer # 56 has appeared Buyer # 56 bought red car with registration 11-C-7501 worth €9980 This is purchase number 56 A new buyer # 57 has appeared Buyer # 57 bought red car with registration 11-C-7501 worth €9980 This is purchase number 57 A new seller # 62 just appeared with blue car with registration 36-LD-7452 worth €17871 to sell. Seller # 62 sold blue car with registration 36-LD-7452 worth €17871 This is sale number 62 A new seller # 63 just appeared with blue car with registration 36-LD-7452 worth €17871 to sell. Seller # 63 sold blue car with registration 36-LD-7452 worth €17871 This is sale number 63
Day 29 There are 6 cars in the show room today.
A new seller # 64 just appeared with green car with registration 81-L-1413 worth €11149 to sell. Seller # 64 sold green car with registration 81-L-1413 worth €11149 This is sale number 64 A new buyer # 58 has appeared Buyer # 58 bought blue car with registration 75-WH-5889 worth €12907 This is purchase number 58 A new seller # 65 just appeared with green car with registration 81-L-1413 worth €11149 to sell. Seller # 65 sold green car with registration 81-L-1413 worth €11149 This is sale number 65
Day 30 There are 7 cars in the show room today.
A new seller # 66 just appeared with black car with registration 50-LH-997 worth €13133 to sell. Seller # 66 sold black car with registration 50-LH-997 worth €13133 This is sale number 66 A new buyer # 59 has appeared Buyer # 59 bought blue car with registration 75-WH-5889 worth €12907 This is purchase number 59 A new buyer # 60 has appeared Buyer # 60 bought blue car with registration 75-WH-5889 worth €12907 This is purchase number 60 A new seller # 67 just appeared with black car with registration 50-LH-997 worth €13133 to sell. Seller # 67 sold black car with registration 50-LH-997 worth €13133 This is sale number 67 A new seller # 68 just appeared with black car with registration 50-LH-997 worth €13133 to sell. Seller # 68 sold black car with registration 50-LH-997 worth €13133 This is sale number 68
This is the desired output:
Day 1 beginning. There are 0 cars in the showroom today. A new buyer #1 just appeared. Buyer #1 wants to buy a car, but the showroom is empty. A new seller #1 just appeared with a yellow car with registration 11-G-7212 worth €3944 to sell. A new seller #3 just appeared with a black car with registration 18-G-2743 worth €14040 to sell. Seller #1 sold their yellow car with registration 11-G-7212 worth €3944 to the showroom. This is sale number 1. A new seller #2 just appeared with a silver car with registration 18-G-2469 worth €1449 to sell. Buyer #1 bought a yellow car with registration 11-G-7212 worth €3944 from the showroom. This is purchase number 1. Seller #3 sold their black car with registration 18-G-2743 worth €14040 to the showroom. This is sale number 2. Seller #2 sold their silver car with registration 18-G-2469 worth €1449 to the showroom. This is sale number 3. Day 2 beginning. There are 2 cars in the showroom today. A new seller #4 just appeared with a black car with registration 18-G-5011 worth €10859 to sell.