For this task, save your work in statspeak.py As we have seen in lecture, a class provides a means to make code and data live (conceptually) in the same place. For this task, you'll implement a class DataFrame that maintains a collection of data items inside self.items, which you keep as a list of floats, and provides the following operations: 1. Upon creation (remember that _init___ function?), the collection is empty. 2. A class method def add(self, x) will add either x or the members of x to the list self.items. Here x is one of the following: (1) a number, (2) a list, or (3) a tuple. If x is a number, it is added to the list directly. If x is a list or a tuple, its members are individually added to the list.

For this task, save your work in statspeak.py As we have seen in lecture, a class provides a means to make code and data live (conceptually) in the same place. For this task, you'll implement a class DataFrame that maintains a collection of data items inside self.items, which you keep as a list of floats, and provides the following operations: 1. Upon creation (remember that _init___ function?), the collection is empty. 2. A class method def add(self, x) will add either x or the members of x to the list self.items. Here x is one of the following: (1) a number, (2) a list, or (3) a tuple. If x is a number, it is added to the list directly. If x is a list or a tuple, its members are individually added to the list.

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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10. Please do in java code DJ classDesign, implement and test a DJ class. A DJ object has a name - djName and an isHired attribute (boolean). Also, a DJ object has 3 musicTypes. These are references to the Music class, where the musicType is declared. In Stage 2 you will be required to declare these 3 instance variables as 1 array.A DJ object can return the value of each of its attributes, and change the value of each of its attributes. It can also display itself in the form:Kongapa, Play List: Disco, Rap, Heavy Metal is hiredImpressions, Play List: House, Hip Hop, Jazz is available
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Use NetBeans Note for all the above User-Defined Classes: • Provide appropriate validation code so the right values get populated in the instance variables. For example, the payrate should not be negative. Write a Java application (Client) program with a static method called generateEmployees( ) that returns a random list of 10 different types of Employee objects. You would use an ArrayList to store the employee objects that will be returned. Use a for loop to populate randomly different types of employee objects with some random data. You could possibly think of a range of values like 1 – 4. If random value is 1, create a HourlyEmployee object with some randomly generated data, if 2, a SalariedEmployee object with some random data and so on. I would leave it to your ingenuity to generate and populate these different Employee objects with other data like name etc. As these objects are generated, add them to your data structure (array or ArrayList that you are using). Finally, the…
Create a class Student with following data members, name, roll, and marks as private datamember. Create array of objects for three students, compare their marks but make sureallocating memory to all the objects during run time only and display the records of the studentwho is getting highest score
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please help This class describes a tweet. A tweet has a message in it, a unique ID,* a count of the number of likes, and a count of the number of times it* has been retweeted. In addition, the Tweet class will have a static * variable to count the total number of tweets to ever be created * (retweets don't count as a new tweet).* * You may NOT import any library class.* **/public class Tweet {
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Creates a class called College with 6 attributes: a. maxStud: a maximum number of Student into the college; b. nbStud: the current number of Student into the college. When a College is created, the number nbStud is equal to 0; c. Student Stud[]: an array of Student. The size of this array is equal to maxStud; d. maxPhdStud: a maximum number of PhDStudent into the college; e. nbPhdStud: the current number of PhDStudent into the college. When a College is created, the number nbPhDStud is equal to 0; f. Student PhdStud[]: an array of PhDStudent. The size of this array is equal to maxPhdStud. Add the following methods: a. add(Student): able to add a Student to the College. The Student will be added to the Stud array if there are an available space; b. overload the operator += (PhDStudent): able to add a PhDStudent to the College. The PhDStudent will be added to the PhdStud. You need to be sure that an available space exits (uses the function assert ); c. find(supervisorName): this method…
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