package jhash;


public class Hash {

    public static double getHash(String s, int lenght) {
        Double tmp = new Double(0);
        for (int i = 0; i < s.length(); ++i) {
            char c = s.charAt(i);
            int j = (int) c;
            tmp += j;
        }

        while (tmp < Math.pow(10, lenght - 1) || tmp > Math.pow(10, lenght)) {
            if (tmp >= Math.pow(10, lenght)) {
                //System.out.println("vetší než " + Math.pow(10, lenght));
                double zbytek = tmp % 2;
                tmp = ((tmp / 2) + zbytek)- (zbytek / 2);
            }
            if (tmp < Math.pow(10, lenght-1)) {
                //System.out.println("menší než " + Math.pow(10, lenght-1);
                tmp = tmp * 2;
            }
        }
        return tmp;
    }
}