Java mean mean(double[] an)

Description

mean

License

Open Source License

Declaration

public static double mean(double[] an) 

Method Source Code

//package com.java2s;
/*#/*from   w w  w  .j a v  a  2s.  c o  m*/
 * The MIT License (MIT)
 * 
 * Copyright (c) 2016 LE SAUCE Julien
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 #*/

public class Main {

    public static double mean(double[] an) {
        if (an == null) {
            throw new NullPointerException("Array cannot be null");
        }
        if (an.length == 0) {
            throw new IllegalArgumentException("Array has zero length");
        }
        double sum = 0.0;
        for (int n = 0; n < an.length; n++) {
            sum += an[n];
        }
        return sum / an.length;
    }
}

Related

1. mean(double[] a, double[] b)
2. mean(double[] a, double[] b)
3. mean(double[] a, int from, int to)
4. mean(double[] a, int n)
5. mean(double[] aArray)
6. mean(double[] arr)
7. mean(Double[] array)
8. mean(double[] array)
9. mean(double[] data)