QUESTION 15 Which of the following is a reason to use an ArrayList instead of an array? O a. An array has faster access to its elements than a list does. O b. An array list is supported by Java while array is not. O C. An ArrayList can grow or shrink as needed, while an array is always the same size O d. You can store objects in an ArrayList, but not in an array.

QUESTION 15 Which of the following is a reason to use an ArrayList instead of an array? O a. An array has faster access to its elements than a list does. O b. An array list is supported by Java while array is not. O C. An ArrayList can grow or shrink as needed, while an array is always the same size O d. You can store objects in an ArrayList, but not in an array.

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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JAVA: Suppose that we have a sorted int array called x, with n elements in it and some room to add more elements. Write the code segment that would add a new item, called target, to the array, so that the array will still be sorted once you are done.
This is needed in Java Given that an ArrayList of Strings named nameList has already been created and names have already been inserted, write the statement necessary to delete the name at index 15.
python:numpy def shoe_shopping(shoe_arr):'''QUESTION 4You're shopping on a budget and want to determine the cheapest shoe brandgiven an array of brands and prices. Return the brand with the lowestaverage price.Hint: You should create a new array of the prices with the correct dtype.Args:shoe_list(np.arry)Return: string>>> shoe_list1 = np.array([["Nike", "Adidas", "New Balance"],["110.99", "135.99", "94.99"],["85.99", "150.99", "105.99"],["225.99", "145.99", "130.99"]])>>> shoe_shopping(shoe_list1)'New Balance'''' # shoe_arr1 = np.array([["Nike", "Adidas", "New Balance"],# ["110.99", "135.99", "94.99"],# ["85.99", "150.99", "105.99"],# ["225.99", "145.99", "130.99"]])# print(shoe_shopping(shoe_arr1))# shoe_arr2 = np.array([["Converse", "Vans", "Dr. Martens", "Steve Madden"],# ["82.99", "250.99", "180.99", "109.99"],# ["99.99", "150.99", "115.99", "75.99"],# ["125.99", "115.99", "110.99", "99.99"]])# print(shoe_shopping(shoe_arr2))
1) What is one main disadvantage of an ArrayList? 2) Write a Java statement to create an ArrayList called list to hold 25 integers. 3) What is the type of the ArrayList defined in question number 2? 4) Write a for loop to initialize the objects in the ArrayList created in question number 2 above to -1.
JAVA you guys returned the question and said that it is a writing assignment but it is not. It is a java question, multiple-choice no coding. Please help me with this.
TASK 1: Write a Java program that do the following: [10 Marks] 1. Define and create an ArrayList which is called "itemsList" of Integer objects. [1 mark] 2. Define and create an array which is called "numList" with five integer vales. [1 mark] 3. Copy the five values from the array "numList" o ArrayList using a for loop. [2 marks] 4. Display the contents of the ArrayList with a message using the for loop with the get method. marks] 5. Display the size of ArrayList with a message. [1.5 mark] 6. Find the sum of ArrayList. [3 marks] [1.5
Java code 8. Given an existing ArrayList named friendList, find the first index of a friend named Sasha and store it in a new variable named index. 9. Given that an ArrayList of Integers named numberList has already been created and several values have already been inserted, write the statement necessary to insert the value 25 at the end of the list. 10. Declare an integer array named evens and fill it with even numbers from 2 through 10 in one statement. 11. Given an existing array named pets, find the size of the array and store it in a new variable named numPets. 12. Given an existing ArrayList named contactList, find the number of contacts in the ArrayList and store it in the existing variable named numContacts.
Step 1: Read your files! You should now have 3 files. Read each of these files, in the order listed below. staticarray.h -- contains the class definition for StaticArray, which makes arrays behave a little more like Python lists O In particular, pay attention to the private variables. Note that the array has been defined with a MAX capacity but that is not the same as having MAX elements. Which variable indicates the actual number of elements in the array? staticarray.cpp -- contains function definitions for StaticArray. Right now, that's just the print() member function. 0 Pay attention to the print() function. How many elements is it printing? main.cpp -- client code to test your staticarray class. Note that the multi-line comment format (/* ... */) has been used to comment out everything in main below the first print statement. As you proceed through the lab, you will need to move the starting comment (/*) to a different location. Other than that, no changes ever need to be made to…
4. Now examine the ArrayList methods in the above table, a) Which method retrieves elements from the ArrayList? b) Which method replaces the value of an element that already exists in the ArrayList? c) Which two methods initializes the value of an element? d) How do the two methods in (c) differ? Which method(s) would be appropriate in the above Java program (after we convert it to work with ArrayLists)?
vWhat happens when an object such as an array is no longer referenced by a variable?
Data structure & Algrothium java program Create the three following classes: 1. class containing two strings attributes first name and last name.2. class containing the name object and an ArrayList of string to store the list gifts. This class would extend the attached NicePersonInterface.java3. class containing one ArrayList of Names to store the naughty names. Another ArrayList of NicePerson to store the nice names and gifts. Add atleast 4 names in each list and display all information.