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ToyStore.java
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ToyStore.java
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import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
public class ToyStore {
private List<Toy> toys;
private List<Toy> prizeToys;
public ToyStore() {
toys = new ArrayList<>();
prizeToys = new ArrayList<>();
}
public void addToy(int id, String name, int quantity, double weight) {
Toy toy = new Toy(id, name, quantity, weight);
toys.add(toy);
}
public void setToyWeight(int id, double weight) {
for (Toy toy : toys) {
if (toy.getId() == id) {
toy.setWeight(weight);
break;
}
}
}
public void play() {
// calculate total weight
double totalWeight = 0;
for (Toy toy : toys) {
totalWeight += toy.getWeight();
}
// generate random number
Random rand = new Random();
double randomNumber = rand.nextDouble() * totalWeight;
// find the prize toy
Toy prizeToy = null;
for (Toy toy : toys) {
if (randomNumber < toy.getWeight()) {
prizeToy = toy;
break;
}
randomNumber -= toy.getWeight();
}
// add the prize toy to the list of prize toys
if (prizeToy != null && prizeToy.getQuantity() > 0) {
prizeToys.add(prizeToy);
// decrement the quantity of the prize toy
prizeToy.setQuantity(prizeToy.getQuantity() - 1);
}
}
public void getPrizeToy() throws IOException {
if (prizeToys.size() > 0) {
// remove the first prize toy from the list of prize toys
Toy prizeToy = prizeToys.remove(0);
// write the prize toy to a file
FileWriter writer = new FileWriter("prize_toys.txt", true);
writer.write(prizeToy.getId() + "," + prizeToy.getName() + "\n");
writer.close();
}
}
}