Using the Vector1D interface, implement an immutable class called PrecisionVector1D that uses an array of doubles internally while exposing elements as integers. This interface is used to represent a vector of numbers: (1, 2, 11), (23, 23, 52, 31), (), etc. It is designed to store decimals until needed. For example, the first vector from the last sentence could be multiplied by 1.1 to yield an internal representation of (1.1, 2.2, 12.1) which would be displayed as (1, 2, 12). When converting from double to int, you may use your choice of rounding schemes (up or down; casting). Do not use the builtin Java functionality for cloning or duplicating arrays. public interface Vector1D {
//returns the i'th element of the vector. assume the index is valid.
public int getElement(int i);
//returns the number of elements in the vector
public int getLength();
//returns the vector as a string of integers (e. g., "(1, 3, 4)")
public String getString();
//returns the sum of all elements of the vector.
public double getSum();

Don't say anything that will offend her, make her feel better and talk about happ things.

Ithink the answer is both.

The answer for your specific question is d.

Evidenceinformation gathered from credible research sources that a speaker support his or her claims.encyclopediaa reference work that offers relatively brief entries providing background information on a wide range of alphabetized topics.peer reviewthe act of subjecting articles submitted to a scholarly journal to critical readings by other experts in a particular field.dictionarya reference work that offers definitions, pronunciation guides, and sometimes etymologies for wordsquotation booka reference work offering famous or notable quotations on a variety of subjectswhat advantages do libraries offer over the internet? libraries allow you access to strong evidence and credible sources that are not available on web sites.describe the advantages and disadvantages of internet research.advantages: allows you convenient access to information on nearly any topic & offers speed-- enabling you to track down a news report or a research finding almost instantly from anywhere in the world. and puts an immense volume of information at our fingertipsdisadvantages: books may not be available online from credible sources, may cost money. cannot assume that information online is credible. anyone can create a website or blog about a topic! what four key characteristics determine a source's credibility? capacityrecency