Implement removeLast()
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Implement removeLast()
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- Implement a class Stack <E> that manages an array list of elements of type E. Provide methods push, pop, and isEmpty. (JAVA)Please answer the problem in the screenshot. Please use the methods below as a base. The language is in Java. import java.util.*; class HeapMax { // we go with arraylist instead of array for size flexibility private ArrayList<Integer> data; // DO NOT MODIFY THIS METHOD public HeapMax() { data = new ArrayList<Integer>(0); } // insert a new element and restore max heap property public void insert(int element) { } // return max public int getMax() { // remove this line return 0; } // remove max and restore max heap property public int removeMax() { // remove this line return 0; } // heap builder public void build(int[] arr) { } // print out heap as instructed in the handout public void display() { } // you are welcome to add any supporting methods }import java.util.HashSet; import java.util.Set; // Define a class named LinearSearchSet public class LinearSearchSet { // Define a method named linearSearch that takes in a Set and an integer target // as parameters public static boolean linearSearch(Set<Integer> set, int target) { // Iterate over all elements in the Set for () { // Check if the current value is equal to the target if () { // If so, return true } } // If the target was not found, return false } // Define the main method public static void main(String[] args) { // Create a HashSet of integers and populate integer values Set<Integer> numbers = new HashSet<>(); // Define the target to search for numbers.add(3); numbers.add(6); numbers.add(2); numbers.add(9); numbers.add(11); // Call the linearSearch method with the set…
- Calculate the performance of addFirst, remove(Object), and removeLast for each of the three implementations (Vectors may be included if desired). Which implementations do the best with short lists? Which implementations are the most efficient for huge lists?What is the difference in the result of returning the words in a HashSet compared with returning them in an ArrayList?JAVA
- 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,…In python. Write a LinkedList class that has recursive implementations of the add and remove methods. It should also have recursive implementations of the contains, insert, and reverse methods. The reverse method should not change the data value each node holds - it must rearrange the order of the nodes in the linked list (by changing the next value each node holds). It should have a recursive method named to_plain_list that takes no parameters (unless they have default arguments) and returns a regular Python list that has the same values (from the data attribute of the Node objects), in the same order, as the current state of the linked list. The head data member of the LinkedList class must be private and have a get method defined (named get_head). It should return the first Node in the list (not the value inside it). As in the iterative LinkedList in the exploration, the data members of the Node class don't have to be private. The reason for that is because Node is a trivial class…Java Code: Below is Parser.java and there are errors. getType() and getStart() is undefined for the type Optional<Token> and there is an error in addNode(). Make sure to get rid of all the errors in the code. Attached is images of the errors. Parser.java import java.text.ParseException;import java.util.LinkedList;import java.util.List;import java.util.Optional; import javax.swing.ActionMap; public class Parser { private TokenHandler tokenHandler; private LinkedList<Token> tokens; public Parser(LinkedList<Token> tokens) { this.tokenHandler = new TokenHandler(tokens); this.tokens = tokens; } public boolean AcceptSeparators() { boolean foundSeparator = false; while (tokenHandler.MoreTokens()) { Optional<Token> currentToken = tokenHandler.getCurrentToken(); if (currentToken.getType() == Token.TokenType.NEWLINE || currentToken.getType() == Token.TokenType.SEMICOLON) {…
- Using Java to design and implement the class PascalTriangle that will generate a Pascal Triangle from a given number of rows. Represent each row in a triangle as a list and the entire triangle as a list of these lists. Please implement the class ArrayList for these lists. Please do not use the binomial coeffiient formula { C(n,k)= n! / (k!*(n-k)!) to create the triangle. The triangle has to be generate using in this way: each row of the triangle begins and ends with 1, value at (x,y) equals to sum of value at (x-1, y-1) & (x-1,y), whereas x is the row number and y is the columm.Complete and submit LinkedStack2.java with following: Inherit LinkedStack.java, implement StackInterface2.java Add String toString()method as specified in page 153, problem 28(a) Add int size()method as specified in page 153, problem 28(b) Add void popSome(int count)method as specified in page 153, problem 28(c) Add boolean swapStart()method as specified in page 153, problem 28(d) Add T poptop() method as specified in page 153, problem 28(e)