/*

 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/*

 * @test

 * @bug 8068399 8069545

 * @summary structural most specific and stuckness

 */

import java.util.function.Function;

import java.util.stream.IntStream;

import java.util.stream.Stream;

public class T8068399 {

    public static class Spectrum {

        public double[] getEnergy() {

            return new double[0];

        }

    }

    protected Spectrum spectrum;

    public static class Ref<T> {

        T value;

        public Ref() {

        }

        public Ref(T value) {

            this.value = value;

        }

        public boolean isNull() {

            return value == null;

        }

        public T get() {

            return value;

        }

        public void set(T value) {

            this.value = value;

        }

    }

    public static <T>T maxKey(Stream<T> stream, Function<T, Double> function) {

        Ref<Double> max = new Ref<>();

        Ref<T> index = new Ref<>();

        stream.forEach(v -> {

            Double value = function.apply(v);

            if (max.isNull() || value > max.get()) {

                max.set(value);

                index.set(v);

            }

        });

        return index.get();

    }

    public static int interpolate(int x, int x0, int x1, int y0, int y1) {

        return y0 + (x - x0) * (y1 - y0) / (x1 - x0);

    }

    public static double interpolate(double x, double x0, double x1, double y0, double y1) {

        return y0 + (x - x0) * (y1 - y0) / (x1 - x0);

    }

    protected int getXByFrequency(double frequency) {

        return (int) Math.round(interpolate(frequency,

                                            getMinSpectrumCoord(),

                                            getMaxSpectrumCoord(),

                                            0, getWidth()));

    }

    private int getWidth() {

        return 0;

    }

    private double getMaxSpectrumCoord() {

        return 0;

    }

    private double getMinSpectrumCoord() {

        return 0;

    }

    void foo() {

        int maxBpmIndex = 0;

        int xcur = getXByFrequency(maxKey(IntStream.range(0, maxBpmIndex).boxed(),

                                          i -> Math.abs(spectrum.getEnergy()[i])));

    }

    public static void main(String [] args) {

    }

}