Question 1UNIT 2 MILESTONE 2What is true about an ArrayList as a collection type?This collection type can contain duplicate values.1 2 3 4If a value is added to this collection type that exists, that value will notbe added.This collection type does not contain duplicate values.This collection type uses key-value pairs to track data.SAVE & CONTINUEReport an issue with this question56 7O Mark this question8UN2.1 A222.2.12.2 Loop2.2:2.2.2 Question 4What should the return statement say?static String echoString (String text) {return}O text text textThe following method should return the text variable three times,combined together side by side.text + text + texttext + "\n" + text + "\n" + textO Nothing should be added.SAVE & CONTINUERun script "void(0);"esc+F1@F2#Say20F32$3 4OMark this question000F45%6F578>9HereMilestUNIT 2 T12.1 Arrays2.1.12.1.22.1.3.2.1.4 J2.1.5 C2.1.6 M2.1.7 De2.2 Loops2.1.8 Tic-2.2.1 Intro2.2.2 Loop*22210epF6

What is true about an array list as a collection type?a. if a value is added to this collection type…

What is true about an ArrayList as a collection type? If a value is added to this collection type that exists, that value will not be added. O This collection type can contain duplicate values. O This collection type does not contain duplicate values. O This collection type uses key-value pairs to track data.

What is true about an ArrayList as a collection type? If a value is added to this collection type that exists, that value will not be added. O This collection type can contain duplicate values. O This collection type does not contain duplicate values. O This collection type uses key-value pairs to track data.

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

See similar textbooks

Related questions

Q: Storing an ArrayList Create a Java program that will store 10 student objects in an ArrayList,…

A: As per your requirements following are the file's codes: This program creates an ArrayList of 10…

Q: getListRowIndices Method public static java.util.ArrayList getListRowIndices(int[][] array, int…

A: public static java.util.ArrayList<java.lang.Integer> getListRowIndices(int[][] array, int…

Q: ArrayList list = new ArrayList(25); What is the type of the ArrayList defined in question number?

A: - The question wants to know the type.of arraylist defined in the provided question. - ArrayList…

Q: Generics enable you to specify the exact type that will be stored in a collection and give you the…

A: Introduction Java programming: Java is cross-platform, meaning it can run on any operating system,…

Q: A feature of our Set ADT is that it is a collection that allows duplicate elements.

A: Set is defined as a well defined collection of objects. These objects are referred to as elements of…

Q: This code doesn't reverse the elements in a DLList it reverse the elements of an array can you redo…

A: The reverse() method is responsible for reversing the order of elements in the list. The addFirst()…

Q: 4. How do you add items to an ArrayList object?

A: Use add() method to add elements in the arraylist.

Q: Write the following method that returns an ArrayList from a set:public static <E>…

A: PROGRAM: //Importing the required header files import java.util.ArrayList; import java.util.Set;…

Q: ArrayList Application: Create an empty ArrayList. Take names from user as many as he/she would like…

A: GIVEN: Develop a Java program of Arraylist application that does the following Insert elements…

Q: python

A: Hello student The picture is totally blured Please upload this picture again in commnet box. I will…

Q: What does a Random object use for a seed value if one is not specified?

A: The Random class in Java is used to generate random numbers. When creating an instance of the Random…

Q: ArrayList programming: switchPairs Write a method switchPairs that switches the order of values in…

A: The following are steps need to be taken for the given program: For the function switchPairs(), we…

Q: X908: expandAndCopyArray Write a method that takes an argument representing an array, orig, and…

A: 1. Define the expandAndCopyArray method:Accept an integer array array as a parameter.Calculate the…

Q: How can one evaluate an ArrayList?

A: ArrayLists are a popular data structure in programming that provide dynamic and resizable arrays.…

Q: In an array-based implementation of a dictionary, you can store key-value pairs in parallel arrays…

A: In an array-based implementation of a dictionary,key-value pairs are usually stored in parallel…

Q: /** * Returns a word randomly chosen from the wordList * @param wordList - array of words to be…

A: Here I have given the main function, to test the getWord function. Algorithm : getWord function :…

Q: X595: removeOdd This method takes an ArrayList of integers as a parameter and does not return…

A: ALGORITHM:- 1. Declare and initialise the arraylist. 2. Pass it to the removeOdd method. 3. Print…

Q: JAVA PROGRAM Chapter 7. PC #16. 2D Array Operations Write a program that creates a two-dimensional…

A: Given,Based on your requirements, I've drafted a Java program to handle the operations on a 2D array…

Q: I followed this code and for some reason its showing the error in the image. i cant figure out whats…

A: Required: I followed this code and for some reason its showing the error in the image. i cant…

Q: Vectors are synchronized while ArrayLists are not. Group of answer choices True False

A: Vectors: A vector is a data structure that represents a sequence of elements. Vectors are typically…

Concept explainers

Map

A map is defined as the name of a higher-order function in most of the programming languages that applies a given function to each element of a functor, such as a list, and returns a list of results in the same order. A map is also called the collection of values based on a key, i.e. a key and value pair. A map has its own set of keys. Duplicate keys are not permitted in the Map, although duplicate values are permitted. Because a Map cannot be navigated, it must be converted to a Set using the keySet() or entrySet() methods. For key-value association mapping, such as dictionaries, maps are ideal.

Question

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1: Step 1

VIEW

Step 2: Step 2

VIEW

Solution

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.

Similar questions

TRUE OR FALSE In order to use static methods in Collections, we must create a Collection object using a new operator.
Q2 You have a dynamic array with 3 elements in it and a capacity of 4. The capacity doubles when additional space is needed and shrinks by 50% (rounding down) when the size is at or below 1/3 capacity. Answer the questions below for the following operation sequence: Add, Add, Remove, Remove, Remove Q2.1 What will be the capacity of the list when the whole sequence is completed? Answer= Enter your answer here
@6 The Reference-based Linked Lists: Select all of the following statements that are true. options: As a singly linked list's node references both its predecessor and its successor, it is easily possible to traverse such a list in both directions. According to the terminology introduced in class, the head reference variable in a singly linked list object references the list's first node. According to the terminology introduced in class, in a doubly linked list, each node references both the head and tail node. In a double-ended singly linked list, the tail reference variable provides access to the entire list. In a circular linked list, the last node references the first node.
6. the grade is under 20 which is outlier, remove it from the array list. 7. Print array list using System.out.println() 8. Use indexOf to print index of 80. 9. Use get function. 10. What is the difference between get and index of? 11. Print the values of the array list using Iterator class. 12.. Delete all the values of the array list using clear function. 13. Print all the values of the array after you execute clear using System.out.println(). what is the result of using clear function? 14. What is the shortcoming of using array List?
#Steps: Create a Main class. Declare an ArrayList in the main() method and store the given values in it. Create an array called output of the size of the ArrayList. Iterate through for-loop to get each element from the array List and load it into the array using the get() method of the list. Print the array to see the loaded elements. import java.util.ArrayList; import java.util.List; public class Main { public static void main(String[] args) { List<String> nameList = new ArrayList<String>(); nameList.add("Robert"); nameList.add("Samson"); nameList.add("Alex"); nameList.add("William"); System.out.println("Elements of List: " + nameList); // Create an array of the same size as nameList Hint: use size() method // Fetch the elements from the nameList and insert into newly created array // Hint: Use get() method to fetch the elements from…