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16) Problem 16- Project Euler Solution in Java

215 = 32768 and the sum of its digits is 3 + 2 + 7 + 6 + 8 = 26.
What is the sum of the digits of the number 21000?

Using the BigInteger() class :

        int sum =0;
        BigInteger big = new BigInteger("2");
        big = big.pow(1000);
        String result =big.toString();
        for(int i=0;i<result.length();i++){
            sum+=Character.getNumericValue(result.charAt(i));
        }
        System.out.println("sum : "+sum ); 






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