package Q16_11_Diving_Board;
import java.util.HashSet;
public class QuestionA {
public static int counter = 0;
public static HashSet<Integer> allLengths(int k, int shorter, int longer) {
HashSet<Integer> lengths = new HashSet<Integer>();
getAllLengths(k, 0, shorter, longer, lengths);
return lengths;
}
public static void getAllLengths(int k, int total, int shorter, int longer, HashSet<Integer> lengths) {
counter++;
if (k == 0) {
lengths.add(total);
return;
}
getAllLengths(k - 1, total + shorter, shorter, longer, lengths);
getAllLengths(k - 1, total + longer, shorter, longer, lengths);
}
public static void main(String[] args) {
HashSet<Integer> lengths = allLengths(12, 1, 3);
System.out.println(lengths.toString());
System.out.println(counter);
}
}