Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
11th Edition
ISBN: 9780134670942
Author: Y. Daniel Liang
Publisher: PEARSON
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Chapter 20, Problem 20.8PE
(Game: lottery) Revise
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(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 {…
(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
:Write some statements that display a list of integers from 10 to 20
inclusive ,each with its square root next to it.
Write a single statement to find and display the sum of the successive
even integers 2, 4, ..., 200. (Answer: 10 100)
Ten students in a class write a test. The marks are out of 10. All the
marks are entered in a MATLAB vector marks. Write a statement to find
and display the average mark. Try it on the following marks:
580 10 3 85794 (Answer: 5.9)
Chapter 20 Solutions
Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
Ch. 20.2 - Prob. 20.2.1CPCh. 20.2 - Prob. 20.2.2CPCh. 20.2 - Prob. 20.2.3CPCh. 20.2 - Prob. 20.2.4CPCh. 20.2 - Prob. 20.2.5CPCh. 20.3 - Prob. 20.3.1CPCh. 20.3 - Prob. 20.3.2CPCh. 20.3 - Prob. 20.3.3CPCh. 20.3 - Prob. 20.3.4CPCh. 20.4 - Prob. 20.4.1CP
Ch. 20.4 - Prob. 20.4.2CPCh. 20.5 - Prob. 20.5.1CPCh. 20.5 - Suppose list1 is a list that contains the strings...Ch. 20.5 - Prob. 20.5.3CPCh. 20.5 - Prob. 20.5.4CPCh. 20.5 - Prob. 20.5.5CPCh. 20.6 - Prob. 20.6.1CPCh. 20.6 - Prob. 20.6.2CPCh. 20.6 - Write a lambda expression to create a comparator...Ch. 20.6 - Prob. 20.6.4CPCh. 20.6 - Write a statement that sorts an array of Point2D...Ch. 20.6 - Write a statement that sorts an ArrayList of...Ch. 20.6 - Write a statement that sorts a two-dimensional...Ch. 20.6 - Write a statement that sorts a two-dimensional...Ch. 20.7 - Are all the methods in the Collections class...Ch. 20.7 - Prob. 20.7.2CPCh. 20.7 - Show the output of the following code: import...Ch. 20.7 - Prob. 20.7.4CPCh. 20.7 - Prob. 20.7.5CPCh. 20.7 - Prob. 20.7.6CPCh. 20.8 - Prob. 20.8.1CPCh. 20.8 - Prob. 20.8.2CPCh. 20.8 - Prob. 20.8.3CPCh. 20.9 - How do you create an instance of Vector? How do...Ch. 20.9 - How do you create an instance of Stack? How do you...Ch. 20.9 - Prob. 20.9.3CPCh. 20.10 - Prob. 20.10.1CPCh. 20.10 - Prob. 20.10.2CPCh. 20.10 - Prob. 20.10.3CPCh. 20.11 - Can the EvaluateExpression program evaluate the...Ch. 20.11 - Prob. 20.11.2CPCh. 20.11 - If you enter an expression "4 + 5 5 5", the...Ch. 20 - (Display words in ascending alphabetical order)...Ch. 20 - (Store numbers in a linked list) Write a program...Ch. 20 - (Guessing the capitals) Rewrite Programming...Ch. 20 - (Sort points in a plane) Write a program that...Ch. 20 - (Combine colliding bouncing balls) The example in...Ch. 20 - (Game: lottery) Revise Programming Exercise 3.15...Ch. 20 - Prob. 20.9PECh. 20 - Prob. 20.10PECh. 20 - (Match grouping symbols) A Java program contains...Ch. 20 - Prob. 20.12PECh. 20 - Prob. 20.14PECh. 20 - Prob. 20.16PECh. 20 - (Directory size) Listing 18.10,...Ch. 20 - Prob. 20.20PECh. 20 - (Nonrecursive Tower of Hanoi) Implement the...Ch. 20 - Evaluate expression Modify Listing 20.12,...
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