119 lines
3.2 KiB
Java
119 lines
3.2 KiB
Java
/*
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* Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 8068399 8069545
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* @summary structural most specific and stuckness
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*/
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import java.util.function.Function;
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import java.util.stream.IntStream;
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import java.util.stream.Stream;
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public class T8068399 {
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public static class Spectrum {
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public double[] getEnergy() {
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return new double[0];
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}
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}
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protected Spectrum spectrum;
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public static class Ref<T> {
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T value;
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public Ref() {
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}
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public Ref(T value) {
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this.value = value;
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}
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public boolean isNull() {
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return value == null;
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}
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public T get() {
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return value;
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}
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public void set(T value) {
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this.value = value;
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}
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}
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public static <T>T maxKey(Stream<T> stream, Function<T, Double> function) {
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Ref<Double> max = new Ref<>();
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Ref<T> index = new Ref<>();
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stream.forEach(v -> {
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Double value = function.apply(v);
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if (max.isNull() || value > max.get()) {
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max.set(value);
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index.set(v);
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}
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});
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return index.get();
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}
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public static int interpolate(int x, int x0, int x1, int y0, int y1) {
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return y0 + (x - x0) * (y1 - y0) / (x1 - x0);
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}
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public static double interpolate(double x, double x0, double x1, double y0, double y1) {
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return y0 + (x - x0) * (y1 - y0) / (x1 - x0);
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}
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protected int getXByFrequency(double frequency) {
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return (int) Math.round(interpolate(frequency,
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getMinSpectrumCoord(),
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getMaxSpectrumCoord(),
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0, getWidth()));
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}
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private int getWidth() {
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return 0;
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}
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private double getMaxSpectrumCoord() {
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return 0;
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}
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private double getMinSpectrumCoord() {
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return 0;
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}
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void foo() {
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int maxBpmIndex = 0;
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int xcur = getXByFrequency(maxKey(IntStream.range(0, maxBpmIndex).boxed(),
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i -> Math.abs(spectrum.getEnergy()[i])));
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}
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public static void main(String [] args) {
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}
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}
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