Example usage for java.util BitSet clear

Introduction

In this page you can find the example usage for java.util BitSet clear.

Prototype

public void clear(int fromIndex, int toIndex) 

Source Link

Document

Sets the bits from the specified fromIndex (inclusive) to the specified toIndex (exclusive) to false .

Usage

From source file:Main.java

public static void main(String[] args) {

    BitSet bitset1 = new BitSet(8);
    BitSet bitset2 = new BitSet(8);

    // assign values to bitset1
    bitset1.set(0);//from w  ww.j  av  a  2 s. c o  m
    bitset1.set(1);
    bitset1.set(2);

    // assign values to bitset2
    bitset2.set(2);
    bitset2.set(4);
    bitset2.set(6);

    // print the sets
    System.out.println("Bitset1:" + bitset1);
    System.out.println("Bitset2:" + bitset2);

    // clear from index 2 to index 4 in bitset1
    bitset1.clear(1, 4);

    // clear index 2 to index 8 in bitset2
    bitset2.clear(2, 8);

    // print new bitsets
    System.out.println(bitset1);
    System.out.println(bitset2);

}

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From source file:org.apache.kylin.cube.cuboid.algorithm.generic.BitsOnePointCrossover.java

/**
 * Helper for {@link #crossover(Chromosome, Chromosome)}. Performs the actual crossover.
 *
 * @param first  the first chromosome.//from   w ww. j  a  v  a  2 s  .co m
 * @param second the second chromosome.
 * @return the pair of new chromosomes that resulted from the crossover.
 * @throws DimensionMismatchException if the length of the two chromosomes is different
 */
private ChromosomePair crossover(final BitsChromosome first, final BitsChromosome second)
        throws DimensionMismatchException {
    final int length = first.getLength();
    if (length != second.getLength()) {
        throw new DimensionMismatchException(second.getLength(), length);
    }

    final BitSet parent1Key = first.getRepresentation();
    final BitSet parent2Key = second.getRepresentation();

    final BitSet child1Key = new BitSet(length);
    final BitSet child2Key = new BitSet(length);

    // select a crossover point at random (0 and length makes no sense)
    final int crossoverIndex = 1 + (GeneticAlgorithm.getRandomGenerator().nextInt(length - 2));

    BitSet a = (BitSet) parent1Key.clone();
    a.clear(crossoverIndex, length);
    BitSet b = (BitSet) parent2Key.clone();
    b.clear(0, crossoverIndex);

    BitSet c = (BitSet) parent1Key.clone();
    c.clear(crossoverIndex, length);
    BitSet d = (BitSet) parent2Key.clone();
    d.clear(0, crossoverIndex);

    child1Key.or(a);
    child1Key.or(d);

    child2Key.or(c);
    child2Key.or(b);
    return new ChromosomePair(first.newBitsChromosome(child1Key), second.newBitsChromosome(child2Key));
}

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