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import java.util.Random;

public class HalfDoubleOperator extends Operator {

private boolean half;

public HalfDoubleOperator(Difficulty diff, Random rand) {

super(diff, rand);

shuffle();

}

public Operator cloneThis() {

HalfDoubleOperator n = new HalfDoubleOperator(this.diff, this.rand);

n.half = this.half;

return n;

}

public void shuffle() {

half = rand.nextBoolean();

}

public boolean worksForInput(int in) {

if (half) {

return (in > 1) && (in % 2 == 0);

} else {

return in * 2 < diff.max && in * 2 > diff.min;

}

}

public int getOutput() {

return half ? prev.getOutput() / 2 : prev.getOutput() * 2;

}

public String toString() {

return half ? "halbieren" : "verdoppeln";

}

}