public Bucket get(final int index) {
			Objects.checkIndex(index, partition.size());
			return new Bucket(partition.get(index), frequencies[index]);
		}
Returns the bucket at the specified position.

@param index index of the element to return
@return the bucket at the specified position
@throws IndexOutOfBoundsException if the index is out of range
        ({@code index < 0 || index >= size()})
jenetics.incubator/src/main/java/io/jenetics/incubator/stat/Histogram.java