Question 13 1 pts Assume you need to write an implementation of a stack that has 3 public methods: push, pop, and peek. Assume your implementation uses an array to store the elements. Where in the array should you remove the new elements? cither way beginning and end are equally good neither - using an array to implement a stack kabad idea at the beginning of the array(Index 0) at the end (after the last element Question 14 2 pts Assume you need to write a class called Marble. In order to be able to sort all the marbles in your collection you decide to implement the interface Comparable T> Which of the following code segments should you use to implement that class? public class Marble Marble implements Comparable ...) public class Marble Marble implements Comparable ... public Marble class Marble implements Comparable ...) public class Marble implements Comparable Marble...) Question 15 2 pts Here is a sentence that is supposed to describe the value that is returned by the method compare To from the interface Comparable