Java List Average getAverage(int period, List timeline)

Description

average in specified period.

License

Open Source License

Parameter

Parameter	Description
period	sliding window of timeline samples.
timeline	timeline of samples.

Return

-1 if not enough samples; average of samples within period.

Declaration

public static double getAverage(int period, List<Double> timeline) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * /* ww  w.j  a v a 2  s .c o m*/
 * Copyright (c) 2012 GigaSpaces Technologies Ltd. All rights reserved
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *       http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *  
 ******************************************************************************/

import java.util.List;

public class Main {
    /**
     * average in specified period.
     * @param period sliding window of timeline samples.
     * @param timeline timeline of samples.
     * @return -1 if not enough samples; average of samples within period.
     */
    public static double getAverage(int period, List<Double> timeline) {
        if (period > timeline.size())
            return -1;

        double average = 0.0;
        for (int i = 0; i < period && i < timeline.size(); i++) {
            double value = timeline.get(i);
            average += value;
        }
        average /= period;

        return average;
    }
}

Related

1. averageLog(List logList)
2. averageValue(List oper)
3. calculateAverage(final List durations)
4. calculateAverage(List list)
5. computeAverage(List aList)
6. getAverage(List list)
7. getAverage(List l)
8. getAverage(List values)
9. getAverage(List values)