Learned about Sets

master
Hammy 4 years ago
parent b7f92e3ced
commit 9ac119d054

@ -0,0 +1,20 @@
import common.Product;
import common.Supplier;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
public class ProductCatalogue implements Iterable<Product> {
private final Set<Product> products = new HashSet<>();
public void addSupplier(final Supplier supplier) {
products.addAll(supplier.getProducts());
}
@Override
public Iterator<Product> iterator() {
return products.iterator();
}
}

@ -0,0 +1,28 @@
import common.Product;
import common.Supplier;
import java.util.Iterator;
import java.util.NavigableSet;
import java.util.Set;
import java.util.TreeSet;
public class WeightAwareProductCatalogue implements Iterable<Product> {
private final NavigableSet<Product> products =
new TreeSet<>(Product.BY_WEIGHT);
public void addSupplier(final Supplier supplier) {
products.addAll(supplier.getProducts());
}
public Set<Product> findLighterProducts(final Product product) {
return products.headSet(product, false);
}
@Override
public Iterator<Product> iterator() {
return products.iterator();
}
}
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