silnia

Hello.java

import java.util.Scanner;
import java.math.BigInteger;
import java.io.PrintWriter;
import java.io.File;

public class Hello{
	public static BigInteger n,sum,i,d;
	public static int cores;
  
  	static class MyThread implements Runnable {

      	BigInteger g,n;
      
	   public MyThread(BigInteger g, BigInteger n) {
             	this.g = g; 
				this.n = n;
	   }

	   public void run() {
         	BigInteger temp = g;
         	for(int i = 0; g.compareTo(n.subtract(BigInteger.valueOf(1)))==-1; g = g.add(BigInteger.valueOf(1))) {
           		temp = temp.multiply(n.add(BigInteger.valueOf(1)));
         	}
         	Hello.sum = Hello.sum.multiply(temp);
			System.out.print("a\n");
	   }
	}
  
	public static void main(String[] args) throws Exception {
		Scanner scan = new Scanner(System.in);
		System.out.print("Podaj liczbe watkow: ");
		cores = Integer.parseInt(scan.next());
		Thread[] threads = new Thread[cores];
		System.out.print("Podaj liczbe: ");
       	File plik = new File("liczba.txt");
       	plik.createNewFile();
       	PrintWriter zapis = new PrintWriter("liczba.txt");
		n = new BigInteger(scan.next());
		sum = BigInteger.valueOf(1);
		i = BigInteger.valueOf(1);
      	d = n.divide(BigInteger.valueOf(cores));
		int z = 0;
			System.out.print(n.toString() + " " + i.toString() + "\n");
		while(i.compareTo(n)==-1) {
          	Runnable temp = new MyThread(i, i.add(d));
          	threads[z] = new Thread(temp);
			threads[z].start();
          	i = i.add(d);
			z++;
		}
		System.out.print("poczekaj aż wyswietli sie a w liczbie watkow i wpisz cokolwiek: ");
		scan.next();
		System.out.print("Zapisywanie do pliku: ");
		zapis.print(sum);
	}
}