Introduction to Java Programming and Data Structures: Brief Version (11th Global Edition)
11th Edition
ISBN: 9780134671710
Author: Y. Daniel Liang
Publisher: PEARSON
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Textbook Question
Chapter 19, Problem 19.8PE
(Shuffle ArrayList) Write the following method that shuffles an ArrayList:
public static <E> void shuffle (ArrayList<E> list)
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(Sort ArrayList)
Write the following method that sorts an ArrayList:
public static <E extends Comparable<E>> void sort(ArrayList<E> list)
Write a test program that prompts the user to enter 10 integers, invokes this method to sort the numbers, and displays the numbers in increasing order.
Sample Run
Enter 10 integers: 3 4 12 7 3 4 5 6 4 7
The sorted numbers are 3 3 4 4 4 5 6 7 7 12
Class Name: Exercise19_09
(Algebra: perfect square
)
Write a program that prompts the user to enter an integer
m
and find the smallest integer
n
such that
m * n
is a perfect square.
(Hint: Store all smallest factors of
m
into an array list.
n
is the product of the factors that appear an odd number of times in the array list.
For example, consider
m
= 90, store the factors 2, 3, 3, 5 in an array list. 2 and 5 appear an odd number of times in the array list. So,
n
is 10.)
Sample Run 1
Enter an integer m: 1500
The smallest number n for m x n to be a perfect square is 15
m x n is 22500
Sample Run 2
Enter an integer m: 63
The smallest number n for m x n to be a perfect square is 7
m x n is 441
Class Name:
Exercise11_17
Answer is :
import java.util.Scanner;
public class Squares { public static void main(String[] args) { Scanner scan = new Scanner(System.in); //instantiation of Scanner that will take inputs from the keyboard
//the try catch block below is for trapping error with the input try {…
(Average the major diagonal in a matrix) Write a method that averages all the numbers in the major diagonal in an n * n matrix of double values using the following header:
public static double averageMajorDiagonal(double[][] m)
Write a test program that reads a 4-by-4 matrix and displays the average of all its elements on the major diagonal. Here is a sample run:
1 2 3 4.0
5 6.5 7 8
9 10 11 12
13 14 15 16
Average of the elements in the major diagonal is 8.625
Chapter 19 Solutions
Introduction to Java Programming and Data Structures: Brief Version (11th Global Edition)
Ch. 19.2 - Are there any compile errors in (a) and (b)?Ch. 19.2 - Prob. 19.2.2CPCh. 19.2 - Prob. 19.2.3CPCh. 19.3 - Prob. 19.3.1CPCh. 19.3 - Prob. 19.3.2CPCh. 19.3 - Prob. 19.3.3CPCh. 19.3 - Prob. 19.3.4CPCh. 19.4 - Prob. 19.4.1CPCh. 19.4 - Prob. 19.4.2CPCh. 19.5 - Prob. 19.5.1CP
Ch. 19.5 - Prob. 19.5.2CPCh. 19.6 - What is a raw type? Why is a raw type unsafe? Why...Ch. 19.6 - Prob. 19.6.2CPCh. 19.7 - Prob. 19.7.1CPCh. 19.7 - Prob. 19.7.2CPCh. 19.7 - Prob. 19.7.3CPCh. 19.7 - Prob. 19.7.4CPCh. 19.8 - Prob. 19.8.1CPCh. 19.8 - Prob. 19.8.2CPCh. 19.8 - Prob. 19.8.3CPCh. 19.8 - Prob. 19.8.4CPCh. 19.8 - Prob. 19.8.5CPCh. 19.9 - Prob. 19.9.1CPCh. 19.9 - How are the add, multiple, and zero methods...Ch. 19.9 - How are the add, multiple, and zero methods...Ch. 19.9 - What would be wrong if the printResult method is...Ch. 19 - (Revising Listing 19.1) Revise the GenericStack...Ch. 19 - Prob. 19.2PECh. 19 - (Distinct elements in ArrayList) Write the...Ch. 19 - Prob. 19.4PECh. 19 - (Maximum element in an array) Implement the...Ch. 19 - (Maximum element in a two-dimensional array) Write...Ch. 19 - Prob. 19.7PECh. 19 - (Shuffle ArrayList) Write the following method...Ch. 19 - (Sort ArrayList) Write the following method that...Ch. 19 - (Largest element in an ArrayList) Write the...Ch. 19 - Prob. 19.11PE
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