For each question, write the method assuming that its part of the StringArrayList I started in lecture below :

import java.util.ArrayList; public class StringArrayList implements StringListInterface {

String[] array; int size; public StringArrayList() {

size = 0;

array = new String[10];

}

@Override

public int size() {

return size;

}

@Override

public void add(String s) {

// make space if need

if(size == array.length) {

enlarge();

}

array[size] = s;

size++;

}

private void enlarge() {

// make a larger array

String[] larger = new String[array.length * 2];

// copy everything in

for(int i=0; i

larger[i] = array[i];

}

// set array to the larger array

array = larger;

}

@Override

public void add(int index, String s) throws IndexOutOfBoundsException {

if(index < 0 || index >= size) {

throw new IndexOutOfBoundsException();

}

// make space if need

if(size == array.length) {

enlarge();

}

// move elements out of way

for(int i = size; i>index; i--) {

array[i] = array[i-1];

}

// inser the elemt

array[index] = s;

}

@Override

public String get(int index) throws IndexOutOfBoundsException {

if(index < 0 || index >= size) {

throw new IndexOutOfBoundsException();

}

return array[index];

}

@Override

public String remove(int index) throws IndexOutOfBoundsException {

if(index < 0 || index >= size) {

throw new IndexOutOfBoundsException();

}

// keep referce to removed thing

String removed = array[index];

// shift everthing over

for(int i=index; i

array[i] = array[i+1];

}

size -= 1;

return removed;

}

}

A. (2 points) Write a public void set(int i, String s) method that setsthe element of the list at index i to the value s. That is, it should overwrite the existing element at i. Be sure to handle exceptional conditions appropriately.

B. (2 points) Write a public int indexOf(String s) method that searches the list for the first occurrence of a value equivalent to s (be careful with what kind of equality you use!), and returns its index. Return -1 if the value is not found.

C. (1 point each) Suppose you instantiate a new StringArrayList. What are the size and the length of the backing array:

1) Right after instantiating the list.

2) After you add() 10 items to this list.

3)After you remove(0) five times from this list. Thank you!