Implement MyLinkedList) The implementations of the methods contains(E e), get(int index), indexOf(E e), lastIndexOf(E e), and set(int index, E e) are omitted in the MyLinkedList class. Implement these methods. Define a new class named MyLinkedListExtra that extends MyLinkedList to override these methods. Test your new MyList class using the code at import java.util.*; public class Exercise24_02 { public static void main(String[] args) { new Exercise24_02(); } public Exercise24_02() { String[] names = {"Tom", "Susan", "Kim", "George", "Peter", "Jean", "George", "Jane", "Denise", "Jenny", "Susan", "Kathy", "Jane"}; MyList list = new MyLinkedListExtra<>(names); System.out.println(list); Scanner input = new Scanner(System.in); System.out.print("Enter a name: "); String name = input.next(); System.out.print("Enter an index: "); int index = input.nextInt(); System.out.println(name + " is in the list? " + list.contains(name)); System.out.println("name at index " + index + " is " + list.get(3)); System.out.println(name + " is at index " + list.indexOf(name)); System.out.println(name + " is at last index " + list.lastIndexOf(name)); list.set(index, name); } } class MyLinkedListExtra extends MyLinkedList { /** Create an empty list */ public MyLinkedListExtra() { // Implement } /** Create a list from an array of objects */ public MyLinkedListExtra(E[] objects) { // Implement } @Override /** Return true if this list contains the element e */ public boolean contains(Object o) { // Implement } @Override /** Return the element from this list at the specified index */ public E get(int index) { // Implement } @Override /** Returns the index of the first matching element in this list. * Returns -1 if no match. */ public int indexOf(Object o) { // Implement } @Override /** Returns the index of the last matching element in this list * Returns -1 if no match. */ public int lastIndexOf(Object o) { // Implement } @Override /** Replace the element at the specified position in this list * with the specified element. */ public E set(int index, E e) { // Implement } }
(Implement MyLinkedList) The implementations of the methods contains(E
e), get(int index), indexOf(E e), lastIndexOf(E e), and set(int
index, E e) are omitted in the MyLinkedList class. Implement these methods.
Define a new class named MyLinkedListExtra that extends MyLinkedList
to override these methods. Test your new MyList class using the code at
import java.util.*;
public class Exercise24_02 {
public static void main(String[] args) {
new Exercise24_02();
}
public Exercise24_02() {
String[] names = {"Tom", "Susan", "Kim", "George", "Peter",
"Jean", "George", "Jane", "Denise", "Jenny", "Susan", "Kathy", "Jane"};
MyList<String> list = new MyLinkedListExtra<>(names);
System.out.println(list);
Scanner input = new Scanner(System.in);
System.out.print("Enter a name: ");
String name = input.next();
System.out.print("Enter an index: ");
int index = input.nextInt();
System.out.println(name + " is in the list? " + list.contains(name));
System.out.println("name at index " + index + " is " + list.get(3));
System.out.println(name + " is at index " + list.indexOf(name));
System.out.println(name + " is at last index " + list.lastIndexOf(name));
list.set(index, name);
}
}
class MyLinkedListExtra<E> extends MyLinkedList<E> {
/** Create an empty list */
public MyLinkedListExtra() {
// Implement
}
/** Create a list from an array of objects */
public MyLinkedListExtra(E[] objects) {
// Implement
}
@Override /** Return true if this list contains the element e */
public boolean contains(Object o) {
// Implement
}
@Override /** Return the element from this list at the specified index */
public E get(int index) {
// Implement
}
@Override /** Returns the index of the first matching element in this list.
* Returns -1 if no match. */
public int indexOf(Object o) {
// Implement
}
@Override /** Returns the index of the last matching element in this list
* Returns -1 if no match. */
public int lastIndexOf(Object o) {
// Implement
}
@Override /** Replace the element at the specified position in this list
* with the specified element. */
public E set(int index, E e) {
// Implement
}
}
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