public class Main {

    public static void main(String[] args) {
        squareRootSum();
    }

    public static int squareRootSum() {
        int sum = 0;
        BigDecimal root;
        MathContext wtf = new MathContext(101, RoundingMode.HALF_UP);
        BigDecimal number = BigDecimal.ONE;

        for (int i = 1; i <= 100; i++) {

            if (Math.sqrt(i) != (int) Math.sqrt(i)) {
                System.out.println(i);
                root = number.sqrt(wtf);
                String digits = root.toString();
                StringBuffer copy = new StringBuffer(digits).deleteCharAt(1);
                System.out.println(copy);

                copy.deleteCharAt(copy.length() - 1);
                for (int j = 0; j < copy.length(); j++) {
                    sum = sum + Character.getNumericValue(copy.charAt(j));
                }

                System.out.println("sum: " + sum + "; length: " + copy.length());

            }
            number = number.add(BigDecimal.ONE);

        }
        return sum;
    }
}