Java BigInteger Calculate sumOfDigits(BigInteger n)

Description

sum Of Digits

License

Open Source License

Declaration

public static int sumOfDigits(BigInteger n) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.math.BigInteger;

public class Main {
    public static int sumOfDigits(long n) {
        int sum = 0;
        while (n != 0) {
            sum += n % 10;/*from  ww  w. j  av a 2s .  c  o  m*/
            n /= 10;
        }
        return sum;
    }

    public static int sumOfDigits(BigInteger n) {
        int sum = 0;
        while (!n.equals(BigInteger.ZERO)) {
            sum += n.remainder(BigInteger.TEN).intValue();
            n = n.divide(BigInteger.TEN);
        }
        return sum;
    }
}

Related

1. subArray(BigInteger[] input, int start, int end)
2. substring(final String lhs, final BigInteger _start, final BigInteger _end)
3. sum(BigInteger valueA, BigInteger valueB)
4. sum(BigInteger... values)
5. sumOfDigits(BigInteger ab)
6. trim(BigInteger bi)
7. trim(BigInteger n)
8. trimToPrecision(BigInteger number, int precision)
9. uint64ToByteStreamLE(BigInteger val, OutputStream stream)