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What will happen if a set has duplicate entries? python the duplicate copies will not be affected the duplicate copies will still be printed none the duplicate copies will be ignored

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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/* Rack.java by Craig Persiko Starter file for Exercise for Chapter 13 in CS 111B This class stores an ArrayList of Tile objects, sorts them, and returns them via .toString() DO NOT CHANGE THE FOLLOWING CODE. YOUR JOB IS TO ADD THE FOLLOWING METHODS: .toString() .sortHighToLow() You may also add any helper methods you want, such as swapValues. Make sure to write the Selection Sort algorithm like in the class example, but using the Tile object's .compareTo method. You can copy my code from my example, and then change it to fit your program. Note that we want to sort Tiles from highest value to lowest (the opposite order from our example.)*/ import java.util.ArrayList; class Rack{ private ArrayList<Tile> tiles; public Rack() { tiles = new ArrayList<Tile>(); } public void addTile(Tile t) { tiles.add(t); } /* DO NOT CHANGE THE ABOVE CODE. YOUR JOB IS TO ADD THE FOLLOWING METHODS: .toString() .sortHighToLow() You…
ion C Lons Employee -id: int -name String - dob : Date -staff : ArrayList +setid(int): void +getld() : int +setName(String): void +setDob(Date) : void +getDob(): Date +addStaff(Employee) : void +getStaff() : ArrayList
dictionaries = [] dictionaries.append({"First":"Bob", "Last":"Jones"}) dictionaries.append({"First":"Harpreet", "Last":"Kaur"}) dictionaries.append({"First":"Mohamad", "Last":"Argani"}) for i in range(0, len(dictionaries)): # Condition that's print the full name when Condition is True if(dictionaries[i]['First']=='Bob')or(dictionaries[i]['Last']=='Kaur'): print(dictionaries[i]['First']+" "+dictionaries[i]['Last']) ********************************** please modify the code to use a while loop instead of a for loop
1. Create an empty set1 and add the following elements: rice, bread, tea, milk, biscuits. b) Create another set2 with the elements: sweets, wheat, rice, tea, corn, millets c) Find the union of set1 and set2 (((programming python))
Develop a python program to do the following task. 1. Create a empty set named sl. 2. Add the following names 'Mohammad', 'Mueez', 'Rayyaan', 'ramadan' in set sl. 3. Display all the names that are starting with letter 'R' or 'r.
How to add insertion sort in this program? So that in every display, the books will be sorted according to its title.#Library Management System #Importing Libraries import datetime import os #os.getcwd() class LMS: """ This class is used to keep record of books library It has total four module: "Display book, "Issue Books", "Return Books", "Add Books" """ def __init__(self, list_of_books, library_name): self.list_of_books = "list_of_books.txt" self.library_name = library_name self.books_dict = {} #This dictionary will contain books title, lender name, issue date, and book status Id = 101 #Starting ID #read the text file with open (self.list_of_books) as bk: content = bk.readlines() for line in content: self.books_dict.update({str(Id):{ #Updating Dictionary "books_title":line.replace("\n", ""), "lender_name": "", "issue_date": "",…
Computer Science JAVA #7 - program that reads the file named randomPeople.txt sort all the names alphabetically by last name write all the unique names to a file named namesList.txt , there should be no repeats
Java Problem The teacher at a school needs help grading an exam with a number of True/False questions. The students’ IDs and test answers are stored in a file. The first entry of the file contains the answer to the test in the form: TTFTFTTTFTFTFFTTFTTF Every other entry in the file is the student’s ID, followed by a blank, followed by the students’ response. For instance, the entry: ABC54102 T FTFTFTTTFTTFTTF TF The student’s ID is ABC54102, answer to question 1 is True, the answer to question 3 is False. Also, the student did not answer question 2 and question 18. The exam has 20 questions. Here is the grading policy: each correct answer is awarded two points, each wrong answer get -1 point, and no answer gets 0 point. Write a program that processes the test data. The output should be the student’s ID, followed by the answers, followed by the test score (total points), followed by the test grade. Assume the following grade scale will be used: 90%-100%, A; 80%-89.99%, B; 70%-79.99%,…
12. You have written a sorting method that takes an array of Object as its parameter. What limitations are imposed on the users of this method?
True or False: Whereas in many languages the elements stored in arrays must all be of the same type, elements in Javascript arrays can all be of different types, including null and undefined. a. false b. true
Write code for PersonManagement class. This class contains the array of Person class (code is given below) and also following methods:1. set: This method receives the array of person class and set the attribute.2. displayAll: This method will display values of all persons.3. sort: This method will sort the array according to age values of the persons with ascending order using Selection Sort.4. reverse: This method will reverse the order of the array.5. getPersons: This method will return the array of the persons (attribute).6. displayEvenAgePerson: This method will display all those persons values who have even age.7. displayOddAgePerson: This method will display all those persons values who have odd age.8. displayPrimeAgePerson: This method will display only those persons values who have prime number age.Following is the class of Person: public class Person {private String Name;public int age;public void set(String Name, int age){this.Name = Name;if(age > 0 && age <=…
The method retainAll( ) in a Set is used to find ________. Union Intersection Membership test Difference