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import java.util.List;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
public class Main
{
public static void main(String[] args) {
List<Double> a = Arrays.asList(5.0, Double.NaN, -1.0, Double.NaN, 0.0);
Collections.sort(a);
System.out.println(a);
System.out.println(Math.max(5.0, Double.NaN));
System.out.println(Math.max(Double.NaN, 5.0));
}
}