Java Number Sum sumOfDigits(long n)

Description

Return sum of decimal digits in n.

License

Open Source License

Parameter

Parameter	Description
n	a parameter

Return

the long

Declaration

private static long sumOfDigits(long n) 

Method Source Code

//package com.java2s;
/*/* ww w . j av  a 2 s.  c  om*/
 *  Jajuk
 *  Copyright (C) The Jajuk Team
 *  http://jajuk.info
 *
 *  This program 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 2
 *  of the License, or any later version.
 *
 *  This program 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 this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *  
 */

public class Main {
    /**
     * Return sum of decimal digits in n. Code from
     * http://www.cs.princeton.edu/introcs/51data/CDDB.java.html
     * 
     * @param n 
     * 
     * @return the long
     */
    private static long sumOfDigits(long n) {
        long i = n;
        long sum = 0;
        while (i > 0) {
            sum = sum + (i % 10);
            i = i / 10;
        }
        return sum;
    }
}

Related

1. summary(String text)
2. summatory(int value)
3. sumMinMax(int a, int b)
4. sumNforOddIndices(long n)
5. sumOfCollectionDouble(Iterable doubleIterable)
6. sumOfProperDivisors(long num)
7. sumOr0(Object a, Object b)
8. sumOverOne(final int n)
9. sumPossitiveIntegerSequencePartial(int start, int end)