| 37 | } |
| 38 | |
| 39 | public static void main(String[] args) |
| 40 | { |
| 41 | int n = 2; |
| 42 | if (args.length > 0) |
| 43 | n = Integer.parseInt(args[0]); |
| 44 | if (n < 2) |
| 45 | n = 2; |
| 46 | |
| 47 | int m = (1 << n) * 10000; |
| 48 | BitSet bits = new BitSet(m+1); |
| 49 | System.out.println("Primes up to " + padNumber(m, 8) + " " + padNumber(nsieve(m,bits), 8)); |
| 50 | |
| 51 | m = (1 << n-1) * 10000; |
| 52 | System.out.println("Primes up to " + padNumber(m, 8) + " " + padNumber(nsieve(m,bits), 8)); |
| 53 | |
| 54 | m = (1 << n-2) * 10000; |
| 55 | System.out.println("Primes up to " + padNumber(m, 8) + " " + padNumber(nsieve(m,bits), 8)); |
| 56 | } |
| 57 | } |