public boolean addAll(final int index, final int[] elements) {
		addRangeCheck(index);

		final int count = elements.length;
		ensureSize(_size + count);

		final int moved = _size - index;
		if (moved > 0) {
			arraycopy(_data, index, _data, index + count, moved);
		}

		arraycopy(elements, 0, _data, index, count);
		_size += count;
		return count != 0;
	}
Inserts all the elements in the specified array into this list, starting
at the specified position.

@param index index at which to insert the first element from the
             specified collection
@param elements collection containing elements to be added to this list
@return {@code true} if this list changed as a result of the call
@throws IndexOutOfBoundsException if the index is out of range
        {@code (index < 0 || index > size())}
@throws NullPointerException if the specified array is null
jenetics.ext/src/main/java/io/jenetics/ext/internal/util/IntList.java