public IntStream ones() {
		return IntStream.range(0, length())
			.filter(_genes::get);
	}
Return the indexes of the <i>ones</i> of this bit-chromosome as stream.

@since 3.0

@return the indexes of the <i>ones</i> of this bit-chromosome
jenetics/src/main/java/io/jenetics/BitChromosome.java