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Starting Out with Java: From Control Structures through Data Structures (3rd Edition)
3rd Edition
ISBN: 9780134038179
Author: Tony Gaddis, Godfrey Muganda
Publisher: PEARSON
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Chapter 7.3, Problem 7.13CP
Program Plan Intro
Array:
An array is defined as a group that consists of similar data types.
- The array size must be specified by an “int” value and not long or short.
- In Java, all arrays are allocated dynamically.
- An array is always indexed, starting from 0.
Declaring an array reference and creating an array:
- To insert elements to an array, first an array has to be created by using new operator and then the reference variable is assigned.
- The syntax is as follows,
arrayRefVar = new elementType[arraySize]
- From the above statement it is clear that, an array is created using new elementType[arraySize] and then the reference to the newly created array is assigned to the variable arrayRefVar.
- It is possible to declare an array variable, create an array and assign the reference to a variable in a single statement itself.
The syntax will be as follows,
elementType[]arrayRefVar = new elementType[arraySize];
elementType arrayRefVar[]= new elementType[arraySize);
Example:
double myFile = new double[20];
The statement given above declares an array variable myFile and then creates an array that consists of 20 elements which are of the datatype double and at last assign the reference to myFile.
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Students have asked these similar questions
JAVA ARRAY MANIPULATION QUESTION:
make a method called manipulator that takes a double array as parameter and modifies it. The method will modify the array then print the array. The method must modify the existing array, it CAN NOT create a different array as the solution. The manipulator method will be a void method.
Remember: To get an average of 2 digits you add them together then divide by 2. Average of x and y = (x+y)/2
Modifications the method will do:
For every 2 consecutive elements in the array, both the elements are replaced by their average.
If the number of elements in an array is odd don't modify the last number of the array.
Basically, you find the average of 2 consecutive elements then replace both of the elements with that value.
Examples:
Array = {2.0,3.0} will be changed to {2.5,2.5} when passed to the manipulator method
Array = {2.0,3.0,45} will be changed to {2.5,2.5,45} when passed to the manipulator method
Array = {2.0,3.0,45,55} will be changed to…
Sultan Qaboos University
Department of Computer Science
COMP2202: Fundamentals of Object Oriented Programming
Assignment # 2 (Due 5 November 2022 @23:59)
The purpose of this assignment is to practice with java classes and objects, and arrays.
Create a NetBeans/IntelliJ project named HW2_YourId to develop a java program as explained below.
Important: Apply good programming practices:
1- Provide comments in your code.
2- Provide a program design
3-
Use meaningful variables and constant names.
4- Include your name, university id and section number as a comment at the beginning of your code.
5- Submit to Moodle the compressed file of your entire project (HW1_YourId).
1. Introduction:
In crowded cities, it's very crucial to provide enough parking spaces for vehicles. These are usually multistory
buildings where each floor is divided into rows and columns. Drivers can park their cars in exchange for some
fees. A single floor can be modeled as a two-dimensional array of rows and columns. A…
Description:
Write a method that return the average of an array with the following header:
public static double average(double[] array);
In the main method, 5 double numbers are required to be entered.
Input Example:
1.2
1.2
1.3
1.3
1.35
Output Example:
The average value is 1.27
Chapter 7 Solutions
Starting Out with Java: From Control Structures through Data Structures (3rd Edition)
Ch. 7.1 - Write statements that create the following arrays:...Ch. 7.1 - Whats wrong with the following array declarations?...Ch. 7.1 - Prob. 7.3CPCh. 7.1 - Prob. 7.4CPCh. 7.1 - Prob. 7.5CPCh. 7.1 - Prob. 7.6CPCh. 7.1 - Prob. 7.7CPCh. 7.1 - Prob. 7.8CPCh. 7.2 - Prob. 7.9CPCh. 7.2 - Prob. 7.10CP
Ch. 7.2 - A program has the following declaration: double[]...Ch. 7.2 - Look at the following statements: int[] a = { 1,...Ch. 7.3 - Prob. 7.13CPCh. 7.3 - Write a method named zero, which accepts an int...Ch. 7.6 - Prob. 7.15CPCh. 7.7 - Recall that we discussed a Rectangle class in...Ch. 7.10 - Prob. 7.17CPCh. 7.11 - What value in an array does the selection sort...Ch. 7.11 - How many times will the selection sort swap the...Ch. 7.11 - Prob. 7.20CPCh. 7.11 - Prob. 7.21CPCh. 7.11 - If a sequential search is performed on an array,...Ch. 7.13 - What import statement must you include in your...Ch. 7.13 - Write a statement that creates an ArrayList object...Ch. 7.13 - Write a statement that creates an ArrayList object...Ch. 7.13 - Prob. 7.26CPCh. 7.13 - Prob. 7.27CPCh. 7.13 - Prob. 7.28CPCh. 7.13 - Prob. 7.29CPCh. 7.13 - Prob. 7.30CPCh. 7.13 - Prob. 7.31CPCh. 7 - Prob. 1MCCh. 7 - Prob. 2MCCh. 7 - Prob. 3MCCh. 7 - Prob. 4MCCh. 7 - Array bounds checking happens. a. when the program...Ch. 7 - Prob. 6MCCh. 7 - Prob. 7MCCh. 7 - Prob. 8MCCh. 7 - Prob. 9MCCh. 7 - Prob. 10MCCh. 7 - Prob. 11MCCh. 7 - To delete an item from an ArrayList object, you...Ch. 7 - Prob. 13MCCh. 7 - Prob. 14TFCh. 7 - Prob. 15TFCh. 7 - Prob. 16TFCh. 7 - Prob. 17TFCh. 7 - Prob. 18TFCh. 7 - True or False: The Java compiler does not display...Ch. 7 - Prob. 20TFCh. 7 - True or False: The first size declarator in the...Ch. 7 - Prob. 22TFCh. 7 - Prob. 23TFCh. 7 - int[] collection = new int[-20];Ch. 7 - Prob. 2FTECh. 7 - Prob. 3FTECh. 7 - Prob. 4FTECh. 7 - Prob. 5FTECh. 7 - Prob. 1AWCh. 7 - Prob. 2AWCh. 7 - Prob. 3AWCh. 7 - In a program you need to store the populations of...Ch. 7 - In a program you need to store the identification...Ch. 7 - Prob. 6AWCh. 7 - Prob. 7AWCh. 7 - Prob. 8AWCh. 7 - Prob. 9AWCh. 7 - Prob. 10AWCh. 7 - Prob. 11AWCh. 7 - Prob. 1SACh. 7 - Prob. 2SACh. 7 - Prob. 3SACh. 7 - Prob. 4SACh. 7 - Prob. 5SACh. 7 - Prob. 6SACh. 7 - Prob. 7SACh. 7 - Prob. 8SACh. 7 - Prob. 9SACh. 7 - Rainfall Class Write a RainFall class that stores...Ch. 7 - Payroll Class Write a Payroll class that uses the...Ch. 7 - Charge Account Validation Create a class with a...Ch. 7 - Charge Account Modification Modify the charge...Ch. 7 - Prob. 5PCCh. 7 - Drivers License Exam The local Drivers License...Ch. 7 - Magic 8 Ball Write a program that simulates a...Ch. 7 - Grade Book A teacher has five students who have...Ch. 7 - Grade Book Modification Modify the grade book...Ch. 7 - Average Steps Taken A Personal Fitness Tracker is...Ch. 7 - Array Operations Write a program with an array...Ch. 7 - 12.1994 Gas Prices In the student sample programs...Ch. 7 - Sorted List of 1994 Gas Prices Note: This...Ch. 7 - Name Search If you have downloaded this books...Ch. 7 - Population Data If you have downloaded this books...Ch. 7 - World Series Champions If you have downloaded this...Ch. 7 - 2D Array Operations Write a program that creates a...Ch. 7 - Prob. 18PCCh. 7 - Trivia Game In this programming challenge, you...Ch. 7 - Prob. 20PC
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