Potenz

package uzgwafzuwrf;

public class potenzieren {

    public static void main(String [] args){
        System.out.println(berechne(2,3));
    }

    public static int berechne(int x, int k){
        if(k == 0){
            return 1;
        }else if(k == 1){
            return x;
        }else if(k > 1){
            return x*berechne(x, k-1);
        }else{
            return -1;
        }
    }

}