public static ArrayList getInvalidPasSwords (ArrayList passwords) { ArrayList invalid = new ArrayList<>); for (String pw: passwords) { try{ isValidPassword(pw); } catch(Exception e) { invalid.add(pw +" -> " +e.getMessage()); } } return invalid;

public static ArrayList getInvalidPasSwords (ArrayList passwords) { ArrayList invalid = new ArrayList<>); for (String pw: passwords) { try{ isValidPassword(pw); } catch(Exception e) { invalid.add(pw +" -> " +e.getMessage()); } } return invalid;

EBK JAVA PROGRAMMING

9th Edition

ISBN:9781337671385

Author:FARRELL

Publisher:FARRELL

Chapter9: Advanced Array Concepts

Section: Chapter Questions

Problem 18RQ

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import ADTs.QueueADT;import DataStructures.ArrayStack;import ADTs.StackADT;import DataStructures.LinkedQueue;import java.util.Scanner; /**** @author Qiong*/public class RepeatStrings {public static void main(String[] argv) throws Exception{final int SIZE = 3;Scanner keyboard = new Scanner(System.in);QueueADT<String> stringQueue;//stringQueue = new CircularArrayQueue<String>(SIZE);stringQueue = new LinkedQueue<String>();StackADT<String> stringStack;stringStack = new ArrayStack<String>(SIZE);String line;for (int i = 0; i < SIZE; i++){System.out.print("Enter a line of text which includes only 3 words > ");line = keyboard.nextLine();//TODO enque the new element//TODO push the new element}System.out.println("\nOrder is: ");for (int i = 0; i < SIZE; i++){// TODO Remove an element in the order in which we input strings// Save it to the String variable, named lineSystem.out.println(line);}System.out.println("\nOpposite order is: ");for (int i = 0; i <…
public static ArrayList findExactString(String s, ArrayList myArray) { return null; } // Use the above method, findExactString, as a helper method to implement addWithoutDuplication method. The addWithoutDuplication method has the following properties: 1- It takes two arguments, a string s and an ArrayList myArray of type string. 2- It returns an integer which represents the number of occurrences of the string s in myArray while attempting to add it. 3- If myArray is null, it returns -1 4- If adds the string s to the end of the ArrayList myArray if the string s is not already there. public static int addwithout Duplication(String s, ArrayList myArray) { return -1;
Computer Science create a method +addToList(o:E):void that adds the object (o) to the ArrayList referenced by the instance variable list. create a method +removeFromBackOfList():E that removes the object at the back of the ArrayList and returns it.
Scanner sc = new Scanner(System.in);ArrayList <Student> students = new ArrayList<Student>();ArrayList <Student> courses = new ArrayList<Student>();// Method to read the file contents and stores it in// instance arraysvoid readStudents(){// Scanner class object declaredScanner readStuF = null;// try block beginstry{// Opens the file for readingreadStuF = new Scanner(new File("student.txt"));// Loops till end of the file to read recordswhile(readStuF.hasNextLine()){ String stu = readStuF.nextLine();String []eachStu = stu.split(" ");students.add(new Student(eachStu[0], eachStu[1],eachStu[2], Long.parseLong(eachStu[3]),Integer.parseInt(eachStu[4]), Integer.parseInt(eachStu[5]),Integer.parseInt(eachStu[6])));}// End of while loop }// End of try block// Catch block to handle file not found exceptioncatch(FileNotFoundException fe){System.out.println("\n ERROR: Unable to open the file for reading.");}// End of catch block // Close the filereadStuF.close();}// End of…
public class RepeatStrings {public static void main(String[] argv) throws Exception{final int SIZE = 3;Scanner keyboard = new Scanner(System.in);QueueADT<String> stringQueue;//stringQueue = new CircularArrayQueue<String>(SIZE);stringQueue = new LinkedQueue<String>();StackADT<String> stringStack;stringStack = new ArrayStack<String>(SIZE);String line;for (int i = 0; i < SIZE; i++){System.out.print("Enter a line of text which includes only 3 words > ");line = keyboard.nextLine();//TODO enque the new element//TODO push the new element}System.out.println("\nOrder is: ");for (int i = 0; i < SIZE; i++){// TODO Remove an element in the order in which we input strings// Save it to the String variable, named lineSystem.out.println(line);}System.out.println("\nOpposite order is: ");for (int i = 0; i < SIZE; i++){// TODO Remove an element in the order opposite to they were entered// Save it to the String variable, named lineSystem.out.println(line);}}}
getListRowIndices Method public static java.util.ArrayList<java.lang.Integer> getListRowIndices(int[][] array, int rowLength) This method returns an ArrayList with the indices of rows of the two-dimensional having a length that corresponds to rowLength. You may only use one auxiliary method. The method should create an ArrayList that is passed to the auxiliary in order to place the indices (if any). If no indices are found, an empty (size of 0) ArrayList will be returned. You can assume the array parameter will not be null and every row of the two-dimensional array has an array with a size of at least 0. Your implementation must be recursive and you may not use any loop construct. Do not use ++ or -- in any recursive call argument. It may lead to an infinite recursion. For example, use index + 1, instead of index++. Parameters: array - rowLength - Returns: ArrayList<Integer>
BooksMan import java.util.HashMap; import java.util.ArrayList; class Book{ String title, ISBN; ArrayList authors; public Book (String title, String ISBN, String authors){ this.title = title; this.ISBN = ISBN; this.authors = new ArrayList(); if (authors != null) { String [] authorArray = authors.split(", "); for (int i = 0; i < authorArray.length; i++) { this.authors.add(authorArray[i]); } } } public String getISBN() { return ISBN; } public String getTitle() { return title; } public ArrayList getAuthors() { return authors; } } public class Main { public static HashMap buildMap(Book[] s) { HashMap books = new HashMap(); if (s != null) { // TODO Write the statements here: to manage each book from the parameter array reference to the hashmap } return books; } public static void main(String argv[]) { Book[] bookArray = new Book[4]; for (int i = 0; i < 4; i++) {…
public class Facility implements Iterable<String> { protected String name; } protected class StorageUnit { public String unitId; public ArrayList<String> items; public StorageUnit next; public StorageUnit thread_next; public StorageUnit(String unitId) { this.unitId = unitId; this.items = new ArrayList<String>(); next = null; } public void addItem(String singleItem) { items.add(singleItem); } } protected StorageUnit head; protected int totalUnits; protected StorageUnit thread_head; } Please provide implementation for the setThread method to accompany the above code. Method description: public void setThread(int minimumItemsInUnit) - RECURSIVE METHOD - This method initializes thread_head and thread_next to form a list with those nodes from the original list that have at least a number of items that corresponds to the parameter. This method must be recursive. The instance variable thread_head must point to the first node with at least a number of items that correspond…
sortsearchassigncodeex1.java sort, search for a specific student package sortsearchassigncodeex1; import java.util.Scanner; import java.io.*; // // public class Sortsearchassigncodeex1 { // public static void fillArray(Scanner inputFile, int[] arrIn){ int indx = 0; //Complete code { arrIn[indx] = inputFile.nextInt(); indx++; } } //=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- public static void displayArray(int[] arrIn){ for(int indx=0; indx<arrIn.length;indx++) System.out.printf("student %2d sID: %5d\n",(indx+1),arrIn[indx]); } //=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- public static int searchArray(int[] arrIn, int sValue){ int retValue = -1; // if the value is not found method will return -1 for(int indx=0; //Complete code ;indx++) if(arrIn[indx] == sValue) retValue = indx; return retValue; }…
public class CustomLinkedList { public static int findMax(IntNode headObj) { /* Type your code here */ } public static void main(String[] args) { IntNode headObj; IntNode currObj; IntNode lastObj; int i; int max; // Create head node headObj = new IntNode(-1); lastObj = headObj; // Add nodes to the list for (i = 0; i < 20; ++i) { currObj = new IntNode(i); lastObj.insertAfter(currObj); lastObj = currObj; } max = findMax(headObj); System.out.println(max); }}
public ArrayList<Bus> loadBuses(String bfile) { ArrayList<Bus> buses = new ArrayList<>(); try { Scanner scanner = new Scanner(new File(bfile)); while (scanner.hasNextLine()) { String[] line = scanner.nextLine().split(" "); if (line.length < 4 || line.length > 7) { throw new IllegalArgumentException("Invalid input format"); } String name = line[1]; int size = Integer.parseInt(line[1]); int price = Integer.parseInt(line[2]); int level = Integer.parseInt(line[3]); Ministry ministry = null; if (line.length > 5) { ministry = new Ministry(line[5]); } int competitorArea, numSecurity, barArea; Bus bus; SportsBus sportsBus; PartyBus partyBus;…
Please edit this class Authenticator. Remove breaks. Also create user array of size 100 rather than 3 different arrays. Also edit so it can be more OOP import java.util.Scanner; public class AuthenticatorApp { public static void main(String[] args) throws Exception { Scanner input=new Scanner(System.in); Authenticator obj=new Authenticator("user.data"); String Username,Password; boolean done=false; int count=0; while(count<3) { System.out.print("Username? "); Username=input.next(); System.out.print("Password? "); Password=input.next(); obj.authenticate(Username,Password); count++; } System.out.print("Too many failed attempts... please try again later"); input.close(); } } ------------------------------------------------------------------------------------------------------------import java.io.File; import…