Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright (c) 2005-2011 KOM - Multimedia Communications Lab
 *
 * This file is part of PeerfactSim.KOM.
 * 
 * PeerfactSim.KOM is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * any later version.
 * 
 * PeerfactSim.KOM 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 for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with PeerfactSim.KOM.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;

import java.util.List;

public class Main {
    public static double getQuantile(Collection<Double> l, double alpha) {
        List<Double> sorted = new ArrayList<Double>(l);
        Collections.sort(sorted);
        int size = sorted.size();

        if (size == 0)
            return Double.NaN;

        double kDouble = (size - 1) * alpha;
        int k = (int) Math.floor(kDouble);
        double g = kDouble - k;

        double lowerValue = sorted.get(k);

        if (sorted.size() <= k + 1)
            return lowerValue;

        double upperValue = sorted.get(k + 1);

        return (1 - g) * lowerValue + g * upperValue;

    }
}