Java Number Sum sum(double start, double end, double step)

Description

sum

License

Mozilla Public License

Declaration

public static double sum(double start, double end, double step) 

Method Source Code

//package com.java2s;
/** This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *///w  ww.  j  a v a  2 s.c  o  m

public class Main {
    public static double sum(double start, double end, double step) {
        if (start > end) {
            throw new IllegalArgumentException("Lower limit > upper limit!");
        } else if (start + step > end) {
            throw new IllegalArgumentException("Lower limit + step > upper limit!");
        } else if (step <= 0) {
            throw new IllegalArgumentException("Step = 0!");
        } else if (start == end) {
            return start;
        } else {
            double sum = 0;
            for (double i = start; i <= end; i += step) {
                sum += i;
            }
            return sum;
        }
    }
}

Related

1. sum(double a, double b)
2. sum(double x, double y)
3. sum(double x, double y)
4. sum(final Iterable values)
5. sum(final Iterable ns)