import java.util.stream.IntStream;

interface LambdaOperation {
    double performOperation(double n);
}

public class SixthExercise {
    public static void main(String[] args) {
        LambdaOperation lambdaOperation = n -> (int) Math.pow(2, n);

        System.out.println("Power of base two to third(n) exponent: " + lambdaOperation.performOperation(3));

        IntStream
                .rangeClosed(0, 20)
                .boxed()
                .forEach(it -> System.out.println("Value no: " + it + " is: " + (int) lambdaOperation.performOperation(it)));
    }
}