Use the class MyArrayList to implement the interface MyList listed below using parallel streams and write a test program to test the methods. The class should be thread safe. interface MyList{ public void add(E x); public void add(List lst); public boolean forAll(Predicate pr); public boolean exists(Predicate pr); public long count(Predicate pr); public List map(Function fn); public List filter(Predicate pr); public List mapFilter(Function fn, Predicate pr); } class MyArrayList implements MyList { private ArrayList data = new ArrayList<>(); … }

add public method size() to the class Stack so the output will be  pop is: 4 peek is: 8 size is: 2 false   public class Stack<T> {    private LinkedList<T> list;      public Stack() {        list = new LinkedList<>();    }      public boolean isEmpty() {        return list.isEmpty();    }      public void push(T data) {        list.prepend(data);    }      public T pop() {        if (isEmpty()) {            throw new EmptyStackException();        }        return list.removeHead();    }      public T peek() {        if (isEmpty()) {            throw new EmptyStackException();        }        return list.getHead();    } }   public class Main {     public static void main(String[] args) {         Stack<Integer> stack = new Stack<>();         stack.push(6);         stack.push(8);         stack.push(4);         System.out.println("pop is: " + stack.pop());         System.out.println("peek is: " + stack.peek());         System.out.println("size is: " +…

Given main.py and an IntNode class, complete the IntList class (a linked list of IntNodes) by writing the insert_in_descending_order() method to insert new IntNodes into the IntList in descending order. Ex. If the input is: 3 4 2 5 1 6 7 9 8 the output is: 9 8 7 6 5 4 3 2 1 main.py(can not edit) from IntNode import IntNodefrom IntList import IntList if __name__ == "__main__":    int_list = IntList()        input_line = input()    input_strings = input_line.split(' ')        for num_string in input_strings:        # Convert from string to integer        num = int(num_string)         # Insert into linked list in descending order        new_node = IntNode(num)        int_list.insert_in_descending_order(new_node)            int_list.print_int_list() IntNode.py(can not edit) class IntNode:    def __init__(self, initial_data, next = None, prev = None):        self.data = initial_data        self.next = next        self.prev = prev IntList.py(need to edit)

Each of the iterators must implement the java.util.Iterator interface by providing the two public methods hasNext () and next(). The Iterator interface also lists two additional methods, remove () and forEachRemaining (). These are marked as default, so the interface itself does not require implementation. Of these methods, this assignment only requires you to implement the remove () method of the linked list iterator. 1 ArrayList iterator This is an external iterator, meaning it is a public class named ICS211ArrayListIterator, and and the code is not part of the ArrayList class. Your ICS211ArrayListIterator class should have a constructor ICS211ArrayListIterator(java.util.ArrayList gives access to all the elements of the array list. This array must be saved as the value of a class variable of the iterator. data). The constructor must call one of the two toArray methods of ArrayList to obtain an array that Other than this single call to java.util.ArrayList.toArray in the constructor,…