Package fj.data

Examples of fj.data.Natural

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  public static Stream<Natural> primes(final Natural n) {
    return sieve(forever(naturalEnumerator, natural(2).some())).takeWhile(naturalOrd.isLessThan(n));
  }

  public static void main(final String[] a) {
    final Natural n = natural(new BigInteger(a[0])).some();
    final Show<Stream<Natural>> s = streamShow(naturalShow);

    s.println(primes(n));
  }
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  public static Stream<Natural> primes(final Natural n) {
    return sieve(forever(naturalEnumerator, natural(2).some())).takeWhile(naturalOrd.isLessThan(n));
  }

  public static void main(final String[] a) {
    final Natural n = natural(new BigInteger(a[0])).some();
    final Show<Stream<Natural>> s = streamShow(naturalShow);

    s.println(primes(n));
  }
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  //Finds factors of a given number.
  public static Stream<Natural> factor(final Natural n, final Natural p, final P1<Stream<Natural>> ps) {
    Stream<Natural> ns = cons(p, ps);
    Stream<Natural> ret = nil();
    while (ns.isNotEmpty() && ret.isEmpty()) {
      final Natural h = ns.head();
      final P1<Stream<Natural>> t = ns.tail();
      if (naturalOrd.isGreaterThan(h.multiply(h), n))
        ret = single(n);
      else {
        final V2<Natural> dm = n.divmod(h);
        if (naturalOrd.eq(dm._2(), ZERO))
          ret = cons(h, new P1<Stream<Natural>>() {
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Related Classes of fj.data.Natural

  • fj.demo.euler.Problem3
  • fj.demo.Primes2
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