Punto3Tp4PC

import java.util.Random;

public class Punto3 {

    public static void main(String[] args) {
        // TODO Auto-generated method stub

        Random random = new Random();
        int root;
        double inicio = System.currentTimeMillis();
        double fin;
        double tiempo;
        for (int i = 1; i <= 20; i++) {
            root = random.nextInt(1,20);
            System.out.println(SumRootN(root));
        }
        fin = System.currentTimeMillis();
        tiempo = fin-inicio;
        System.out.println("Tiempo transcurrido sin concurrencia: "+tiempo);


        for (int i = 1; i <= 20; i++) {
            Hilo hilo = new Hilo(i);

            hilo.start();
        }
    }
    public static double SumRootN(int root) {
        double result = 0;
        for (int i = 0; i < 10000000; i++) {
            result += Math.exp(Math.log(i) / root);
        }
        return result;
    }

}