Java Collection Sum sum(Collection numbers)

Description

sum

License

Open Source License

Declaration

public static double sum(Collection<? extends Number> numbers) 

Method Source Code

//package com.java2s;
/*/*from  ww  w  .j  a v a2s.co  m*/
 * Copyright (c) 2010 The Broad Institute
 *
 * 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.
 */

import java.util.*;

public class Main {
    public static double sum(Collection<? extends Number> numbers) {
        return sum(numbers, false);
    }

    public static double sum(Collection<? extends Number> numbers, boolean ignoreNan) {
        double sum = 0;
        for (Number n : numbers) {
            if (!ignoreNan || !Double.isNaN(n.doubleValue())) {
                sum += n.doubleValue();
            }
        }

        return sum;
    }

    public static double sum(double[] values) {
        double s = 0.0;
        for (double v : values)
            s += v;
        return s;
    }

    public static long sum(int[] x) {
        long total = 0;
        for (int v : x)
            total += v;
        return total;
    }
}

Related

1. sum(Collection collection)
2. sum(Collection list)
3. sum(Collection values)
4. sum(Collection values)