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c11test4.java
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c11test4.java
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// 第11章练习4
// @author 晴和羽织
import java.util.*;
interface Generator<T> {
T next();
}
class MovieNameGenerator implements Generator<String> {
String[] characters = {
"CAP", "HULK", "IRON MAN", "SPIDER", "THOR", "ANT MAN",
"Avengers1", "Avengers2", "Avengers3", "Avengers4"
};
int next;
public String next() {
String r = characters[next];
next = (next + 1) % characters.length;
return r;
}
}
public class c11test4 {
private static final MovieNameGenerator mng =
new MovieNameGenerator();
static String[] fill(String[] array) {
for(int i = 0; i < array.length; i++)
array[i] = mng.next();
return array;
}
static Collection<String>
fill(Collection<String> collection) {
for(int i = 0; i < 5; i++)
collection.add(mng.next());
return collection;
}
public static void main(String[] args) {
System.out.println(Arrays.toString(fill(new String[5])));
System.out.println(fill(new ArrayList<String>()));
System.out.println(fill(new LinkedList<String>()));
System.out.println(fill(new HashSet<String>()));
System.out.println(fill(new LinkedHashSet<String>()));
System.out.println(fill(new TreeSet<String>()));
}
}