[CODE=java]public class FunktionTest {
public interface Funktion<T extends Number, K extends Number> {
T calculate(K x);
}
public static Funktion<Double, Double> makeChain(final Funktion<Double, Double>[] funs) {
return x -> {
for (Funktion<Double, Double> f : funs) {
x = f.calculate(x);
}
return x;
};
}
public static void main(String[] args) {
// b
Funktion<Double, Double> id = (Double x) -> x;
Double a = id.calculate(10.0);
System.out.println(a);
Funktion<Double, Double> inverse = (Double x) -> x * (-1);
Double a1 = inverse.calculate(-5.3);
System.out.println(a1);
Funktion<Double, Double> timesTen = (Double y) -> (y * 10);
Double a2 = timesTen.calculate(a1);
System.out.println(a2);
Funktion<Double, Double> divideByPi = (Double y) -> (y / 3.14);
Double a3 = divideByPi.calculate(a2);
System.out.println(a3);
// c
Funktion<Double, Double> round = (Double x) -> x;
Double b = round.calculate(a3);
System.out.println(Math.round(b));
// d
Funktion<Double, Double> chain = makeChain(new Funktion[] { inverse, id,
timesTen, divideByPi });
Double g = chain.calculate(5.5);
System.out.println(Math.round(g));
}
}[/CODE]
Ich danke dir für den Hinweis. jetzt funktioniert fabelhaft....
