Problem 3: In classroom, we implemented MyStack by including an ArrayList as private data field of the class (using composition). In this problem, we will use another way to implement the stack class. Define a new MyStack class that extends ArrayList. Draw the UML diagram for the classes and then implement MyStack. Write a test program that prompts the user to enter five strings and displays them in reverse order. (1) Your UML diagram: (

Problem 3: In classroom, we implemented MyStack by including an ArrayList as private data field of the class (using composition). In this problem, we will use another way to implement the stack class. Define a new MyStack class that extends ArrayList. Draw the UML diagram for the classes and then implement MyStack. Write a test program that prompts the user to enter five strings and displays them in reverse order. (1) Your UML diagram: (

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Execute the following statements over initially empty ArrayList myList one after another (cascade). Explain what was changed after each statement (what did it do?) myList.add("z"); ArrayList content: Your explanation (where this output came from): myList.add(0, "a"); ArrayList content: Your explanation (where this output came from): myList.add("t"); ArrayList content: Your explanation (where this output came from): myList.add(2,"w"); ArrayList content: Your explanation (where this output came from): myList.set(0,"b"); ArrayList content: Your explanation (where this output came from):
please complete the following in JAVA Implement the graph ADT using the adjacency list structure. thanks! also posting a similar question for adjacency matrix. have a good day!
The two classes you will create will implement the operations defined in the interface as shown in the UML class diagram above. In addition, BinarySearchArray will implement a static method testBinarySearchArray() that populates the lists, and lets the user interactively test the two classes by adding and removing elements. The parameter BinarySearch can represent either class and tells testBinarySearchArray which class to test. Steps to Implement: 1) To get started create a new project in IntelliJ called BinarySearch. Add a class to your project called BinarySearchArray. Then add another class BinarySearchArrayList and an interface called BinarySearch. The interface BinarySearch includes public method stubs as shown in the diagram. You are allowed to add BinarySearchArrayList to the same file as BinarySearch but don't add an access modifier to this class, or for easier reading, you can declare the classes in separate files with public access modifiers. Only the class…
Java Code: Create a Parser class. Much like the Lexer, it has a constructor that accepts a LinkedList of Token and creates a TokenManager that is a private member. The next thing that we will build is a helper method – boolean AcceptSeperators(). One thing that is always tricky in parsing languages is that people can put empty lines anywhere they want in their code. Since the parser expects specific tokens in specific places, it happens frequently that we want to say, “there HAS to be a “;” or a new line, but there can be more than one”. That’s what this function does – it accepts any number of separators (newline or semi-colon) and returns true if it finds at least one. Create a Parse method that returns a ProgramNode. While there are more tokens in the TokenManager, it should loop calling two other methods – ParseFunction() and ParseAction(). If neither one is true, it should throw an exception. bool ParseFunction(ProgramNode) bool ParseAction(ProgramNode) -Creates ProgramNode,…
Hi, I am a bit lost on how to do this coding assignment. It would be great if someone could help me fill in the MyStack.java file with the given information. All the information is in the pictures. Thank you!
public class PokerAnalysis implements PokerAnalyzer { privateList<Card>cards; privateint[]rankCounts; privateint[]suitCounts; /** * The constructor has been partially implemented for you. cards is the * ArrayList where you'll be adding all the cards you're given. In addition, * there are two arrays. You don't necessarily need to use them, but using them * will be extremely helpful. * * The rankCounts array is of the same length as the number of Ranks. At * position i of the array, keep a count of the number of cards whose * rank.ordinal() equals i. Repeat the same with Suits for suitCounts. For * example, if your Cards are (Clubs 4, Clubs 10, Spades 2), your suitCounts * array would be {2, 0, 0, 1}. * * @param cards * the list of cards to be added */ publicPokerAnalysis(List<Card>cards){ this.cards=newArrayList<Card>(); this.rankCounts=newint[Rank.values().length]; this.suitCounts=newint[Suit.values().length];…
Provide a different implementation of ChoiceQuestion. Instead of storing the choices in an array list, the addChoice method should add the choice to the question text. For this purpose, an addLine method has been added to the Question class. Use the following files: Question.java /** A question with a text and an answer.*/public class Question{ private String text; private String answer; /** Constructs a question with empty text and empty answer. */ public Question() { text = ""; answer = ""; } /** Sets the answer for this question. @param correctResponse the answer */ public void setAnswer(String correctResponse) { answer = correctResponse; } /** Checks a given response for correctness. @param response the response to check @return true if the response was correct, false otherwise */ public boolean checkAnswer(String response) { return response.equals(answer); } /** Add a line of text to…
You have to use comment function to describe what each line does import java.io.BufferedReader; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.IOException; import java.util.ArrayList; import java.util.Arrays; import java.util.List; public class PreferenceData { private final List<Student> students; private final List<Project> projects; private int[][] preferences; private static enum ReadState { STUDENT_MODE, PROJECT_MODE, PREFERENCE_MODE, UNKNOWN; }; public PreferenceData() { super(); this.students = new ArrayList<Student>(); this.projects = new ArrayList<Project>(); } public void addStudent(Student s) { this.students.add(s); } public void addStudent(String s) { this.addStudent(Student.createStudent(s)); } public void addProject(Project p) { this.projects.add(p); } public void addProject(String p) { this.addProject(Project.createProject(p)); } public void createPreferenceMatrix() { this.preferences = new…
Java Given main(), complete the SongNode class to include the printSongInfo() method. Then write the Playlist class' printPlaylist() method to print all songs in the playlist. DO NOT print the dummy head node.
Java
Imagine two entities A and B, each of which has the property X (among other names not relevant to this topic) among other properties. Can the design improve without connecting the two Xs?
Java programming language I have to create a remove method that removes the element at an index (ind) or space in an array and returns it. Thanks! I have to write the remove method in the code below. i attached the part where i need to write it. public class ourArrayList<T>{ private Node<T> Head = null; private Node<T> Tail = null; private int size = 0; //default constructor public ourArrayList() { Head = Tail = null; size = 0; } public int size() { return size; } public boolean isEmpty() { return (size == 0); } //implement the method add, that adds to the back of the list public void add(T e) { //HW TODO and TEST //create a node and assign e to the data of that node. Node<T> N = new Node<T>();//N.mData is null and N.next is null as well N.setsData(e); //chain the new node to the list //check if the list is empty, then deal with the special case if(this.isEmpty()) { //head and tail refer to N this.Head = this.Tail = N; size++; //return we are done.…