Java: An Introduction to Problem Solving and Programming (8th Edition)
8th Edition
ISBN: 9780134462035
Author: Walter Savitch
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 7.2, Problem 13STQ
The following method compiles and executes but does not work as you might hope. What is wrong with it?
/** Doubles the size of an array. */
public static void doubleSize(int[] a)
{
a = new int[a.length * 2];
}
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
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
java program
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
1) Write a method that returns the range of an array of integers. The range is the difference between the highest and lowest values in the array. The signature of the method should be as follows.
public static int computeRange(int[] values)
Chapter 7 Solutions
Java: An Introduction to Problem Solving and Programming (8th Edition)
Ch. 7.1 - What output will be produced by the following...Ch. 7.1 - What output will be produced by the following...Ch. 7.1 - What output will be produced by the following...Ch. 7.1 - Consider the following array: int [] a = new...Ch. 7.1 - What is wrong with the following code to...Ch. 7.1 - Write a complete Java program that reads 20 values...Ch. 7.2 - Write some Java code that will declare an array...Ch. 7.2 - Rewrite the method displayResults of the program...Ch. 7.2 - What output will be produced by the following...Ch. 7.2 - Give the definition of a static method called...
Ch. 7.2 - Give the definition of a static method called...Ch. 7.2 - Prob. 12STQCh. 7.2 - The following method compiles and executes but...Ch. 7.2 - Suppose that we add the following method to the...Ch. 7.3 - Prob. 15STQCh. 7.3 - Replace the last loop in Listing 7.8 with a loop...Ch. 7.3 - Suppose a is an array of values of type double....Ch. 7.3 - Suppose a is an array of values of type double...Ch. 7.3 - Prob. 19STQCh. 7.3 - Consider the partially filled array a from...Ch. 7.3 - Repeat the previous question, but this time assume...Ch. 7.3 - Write an accessor method getEntryArray for the...Ch. 7.4 - Prob. 23STQCh. 7.4 - Write the invocation of the method selectionSort...Ch. 7.4 - How would you need to change the method...Ch. 7.4 - How would you need to change the method...Ch. 7.4 - Consider an array b of int values in which a value...Ch. 7.5 - What output is produced by the following code?...Ch. 7.5 - Revise the method showTable in Listing 7.13 so...Ch. 7.5 - Write code that will fill the following array a...Ch. 7.5 - Write a void method called display such that the...Ch. 7.6 - Prob. 33STQCh. 7.6 - Prob. 34STQCh. 7 - Write a program in a class NumberAboveAverage that...Ch. 7 - Write a program in a class CountFamiles that...Ch. 7 - Write a program in a class CountPoor that counts...Ch. 7 - Write a program in a class FlowerCounter that...Ch. 7 - Write a program in a class characterFrequency that...Ch. 7 - Create a class Ledger that will record the sales...Ch. 7 - Define the following methods for the class Ledger,...Ch. 7 - Write a static method isStrictlyIncreasing (double...Ch. 7 - Write a static method removeDuplicates(Character[]...Ch. 7 - Write a static method remove {int v, int [] in}...Ch. 7 - Suppose that we are selling boxes of candy for a...Ch. 7 - Create a class polynomial that is used to evaluate...Ch. 7 - Write a method beyond LastEntry (position) for the...Ch. 7 - Revise the class OneWayNoRepeatsList, as given in...Ch. 7 - Write a static method for selection sort that will...Ch. 7 - Overload the method selectionSort in Listing 7.10...Ch. 7 - Revise the method selectionSort that appears in...Ch. 7 - Prob. 18ECh. 7 - Write a sequential search of an array of integers,...Ch. 7 - Write a static method findFigure (picture,...Ch. 7 - Write a static method blur (double [] [] picture)...Ch. 7 - Write a program that reads integers, one per line,...Ch. 7 - The following code creates a small phone book. An...Ch. 7 - Write the method rotateRight that takes an array...Ch. 7 - The following code creates a ragged 2D array. The...Ch. 7 - Write a program that will read a line of text that...Ch. 7 - A palindrome is a word or phrase that reads the...Ch. 7 - Add a method bubbleSort to the class ArraySorter,...Ch. 7 - Add a method insertionSort to the class...Ch. 7 - The class TimeBook in Listing 7.14 is not really...Ch. 7 - Define a class called TicTacToe. An object of type...Ch. 7 - Repeat Programming Project 10 from Chapter 5 but...Ch. 7 - Prob. 8PPCh. 7 - Write a GUI application that displays a picture of...Ch. 7 - ELIZA was a program written in 1966 that parodied...Ch. 7 - Prob. 11PPCh. 7 - Create a GUI application that draws the following...Ch. 7 - Practice Program 2 used two arrays to implement a...Ch. 7 - Practice Program 5.4 asked you to define Trivia...
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
3.12 (Date Create a class called Date that includes three pieces Of information as data
members—a month (type ...
C++ How to Program (10th Edition)
What is the difference between a class and an instance of a class?
Starting out with Visual C# (4th Edition)
Using an example of a component that implements an abstract data type such as a stack or a list, show why it is...
Software Engineering (10th Edition)
T F Constructors may not be overloaded.
Starting Out with C++ from Control Structures to Objects (9th Edition)
Write a program that outputs the number of hours, minutes, and seconds that corresponds to 50,391 total seconds...
Absolute Java (6th Edition)
When a file that already exists is opened in append mode, the file's existing contents are erased.
Starting Out with Python (3rd Edition)
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
- 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…arrow_forwardgetEvens public static int getEvens(int[] array, int[] result) Initializes the out parameter result with even values found in array Parameters: array - integer array result - integer array Returns: Number of even values found Throws: java.lang.IllegalArgumentException - if array or result (or both) are null, or if result's length is less than array's length. Any error message is fine (e.g., "Invalid parameters(s)")arrow_forwardUsing Java Eclipse IDE (Average an array) Write two overloaded methods that return the average of an array with the following headers: public static int average(int [] array) public static double average(double [] array) Write a test program that prompts the user to enter 10 double values, invokes this method, then displays the average value.arrow_forward
- TASK 1 Write a Java method that returns the index of the smallest element in an array of integers. If the number of such elements is greater than 1, return the smallest index. Use the following header: public static int indexofLargestlestelement(double[] array) Write a test program that prompts the user to enter ten numbers, invokes this method to return the index of the smallest element, and displays the index.arrow_forwardArray of objects) The array of Vehicles below, write the static method, findMin which returns the lowest price of any Vehicle in the Array Vehicle [ ] myVehicles = new Vehicle[10];public static double findMin(Vehicle [ ] theVehicles)arrow_forwardWrite method body of following methods: InsertNum(int num) // The function takes a number from user as input and it is intelligent enough to place the number at desired index of an array. For example if array has values from 1,3,5,7 and user entered 6 so the function will place 6 after 5 and before 7. (Use While Loop) InsertNum(int num,int position) // This function takes number and position from user and then place the number at desired position of array. Remember to ask from user if there is already a number at that position. (Code in C++)arrow_forward
- Rotate Right k cells (use python) Consider an array named source. Write a method/function named rotateRight( source, k) that rotates all the elements of the source array to the right by 'k' positions. You must execute the method by passing an array and number of cells to be shifted. After calling the method, print the array to show whether the elements have been shifted properly. Example: source=[10,20,30,40,50,60] rotateRight(source,3) After calling rotateRight(source,3), printing the array should give the output as: [ 40, 50, 60, 10, 20, 30]arrow_forward84. Refer to the following method that finds the largest value in an array. /** Precondition: arr is initialized with int values. * @param arr the array to be processed * @return the largest value in arr */ public static int findMax(int[] arr) { int max = /* some value */; 0; int index %3D while (index max) arr[index]; max = index++; return max; } Which replacement(s) for /* some value */ will always result in correct execution of the findMax method? Integer. MIN _VALUE III. I. II. Integer.MAX_VALUE arr[0]arrow_forwardMethod Details getCountInRange public static int getCountInRange(int[] array, int lower, int upper) Returns the number of values in the range defined by lower (inclusive) and upper (inclusive) Parameters: array - integer array lower - lower limit upper - upper limit Returns: Number of values found Throws: java.lang.IllegalArgumentException - if array is null or lower is greater than upper Any error message is fine (e.g., "Invalid parameters(s)")arrow_forward
- TASK 3 Write a Java method that returns the location of the largest element in a two-dimensional array. public static int) locatelargest(double[] a) The return value is a one-dimensional array that contains two elements. These two elements indicate the row and column indices of the largest element in the two-dimensional array. Write a Java test Program that prompts the user to enter a two- dimensional array and displays the location of the largest element in the array. Here is a sample run: Enter the number of rows and columns of the array: 3 4 -Enter Enter the array: 23.5 35 2 10 Enter 4.5 3 45 3.5 |-Enter 35 44 5.5 9.6 -Enter The location of the largest element is at (1, 2)arrow_forward2. Rotate Left k cells Use Python Consider an array named source. Write a method/function named rotateLeft( source, k) that rotates all the elements of the source array to the left by 'k' positions. You must execute the method by passing an array and number of cells to be shifted. After calling the method, print the array to show whether the elements have been shifted properly. Example: source=[10,20,30,40,50,60] rotateLeft(source,3) After calling rotateLeft(source,3), printing the array should give the output as: [ 40, 50, 60, 10, 20, 30]arrow_forward1. Shift Left k Cells Use Python Consider an array named source. Write a method/function named shiftLeft( source, k) that shifts all the elements of the source array to the left by 'k' positions. You must execute the method by passing an array and number of cells to be shifted. After calling the method, print the array to show whether the elements have been shifted properly. Example: source=[10,20,30,40,50,60] shiftLeft(source,3) After calling shiftLeft(source,3), printing the array should give the output as: [ 40, 50, 60, 0, 0, 0 ]arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Database System ConceptsComputer ScienceISBN:9780078022159Author:Abraham Silberschatz Professor, Henry F. Korth, S. SudarshanPublisher:McGraw-Hill EducationStarting Out with Python (4th Edition)Computer ScienceISBN:9780134444321Author:Tony GaddisPublisher:PEARSONDigital Fundamentals (11th Edition)Computer ScienceISBN:9780132737968Author:Thomas L. FloydPublisher:PEARSON
- C How to Program (8th Edition)Computer ScienceISBN:9780133976892Author:Paul J. Deitel, Harvey DeitelPublisher:PEARSONDatabase Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781337627900Author:Carlos Coronel, Steven MorrisPublisher:Cengage LearningProgrammable Logic ControllersComputer ScienceISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education
Database System Concepts
Computer Science
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:McGraw-Hill Education
Starting Out with Python (4th Edition)
Computer Science
ISBN:9780134444321
Author:Tony Gaddis
Publisher:PEARSON
Digital Fundamentals (11th Edition)
Computer Science
ISBN:9780132737968
Author:Thomas L. Floyd
Publisher:PEARSON
C How to Program (8th Edition)
Computer Science
ISBN:9780133976892
Author:Paul J. Deitel, Harvey Deitel
Publisher:PEARSON
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781337627900
Author:Carlos Coronel, Steven Morris
Publisher:Cengage Learning
Programmable Logic Controllers
Computer Science
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education
9.1: What is an Array? - Processing Tutorial; Author: The Coding Train;https://www.youtube.com/watch?v=NptnmWvkbTw;License: Standard Youtube License