Big Java Late Objects
2nd Edition
ISBN: 9781119330455
Author: Horstmann
Publisher: WILEY
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Textbook Question
Chapter 4.8, Problem 37SC
Why is there a statement System.out.println(); in the outer loop but not in the inner loop of the PowerTable.java
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Tracing the Recursion.
Tracing the Recursion. Observe the recursive solution provided below.
1. Which line(s) of this program define(s) the base case of sumOfDigits() method?
2. Which line(s) of this program include recursive call(s)?
3. Trace the recursion below. You must show the trace step by step; otherwise – little
to no credit!
4. Show me the final result!
1 public class SumOfDigitsCalculator {
30
123456
7%
8
public static void main(String[] args) {
System.out.println(sumOfDigits(1234));
}
public static int sumOfDigits (int number) {
if (number == 0)
9
10
11
12
}
13 }
else
return 0;
return number % 10 + sumOfDigits (number / 10);
module : java 731
Question3: (30 MARKS) Passenger Rail Agency for South Africa Train Scheduling System Problem Statement Design and implement a train scheduling system for Prasa railway network. The system should handle the following functionalities: 1. Scheduling trains: Allow the addition of train schedules, ensuring that no two trains use the same platform at the same time at any station. 2. Dynamic updates: Enable adding new train schedules and canceling existing ones. 3. Real-time simulation: Use multithreading to simulate the operation of trains (e.g., arriving, departing). 4. Data management: Use ArrayList to manage train schedules and platform assignments. Requirements 1. Add Train Schedule, Cancel Scheduled Train, View Train Schedules and Platform Management 2. Concurrency Handling with Multithreading i.e Use threads to simulate train operations,…
please answer my 2 java questions correctly , include all comments etc and layout and structure must be correct , follow the requirements
Chapter 4 Solutions
Big Java Late Objects
Ch. 4.1 - How many years does it take for the investment to...Ch. 4.1 - If the interest rate is 10 percent per year, how...Ch. 4.1 - Modify the program so that the balance after each...Ch. 4.1 - Suppose we change the program so that the...Ch. 4.1 - What does the following loop print? int n = 1;...Ch. 4.2 - Hand-trace the following code, showing the value...Ch. 4.2 - Hand-trace the following code, showing the value...Ch. 4.2 - Hand-trace the following code, assuming that a is...Ch. 4.2 - Trace the following code. What error do you...Ch. 4.2 - Prob. 10SC
Ch. 4.3 - Write the for loop of the InvestmentTable.java...Ch. 4.3 - How many numbers does this loop print? for (int n...Ch. 4.3 - Write a for loop that prints all even numbers...Ch. 4.3 - Write a for loop that computes the sum of the...Ch. 4.3 - How would you modify the for loop of the...Ch. 4.4 - Prob. 16SCCh. 4.4 - Rewrite the input check do loop using a while loop...Ch. 4.4 - Suppose Java didnt have a do loop. Could you...Ch. 4.4 - Write a do loop that reads integers and computes...Ch. 4.4 - Write a do loop that reads integers and computes...Ch. 4.5 - What does the SentinelDemo.java program print when...Ch. 4.5 - Why does the SentinelDemo.java program have to...Ch. 4.5 - What would happen if the declaration of the salary...Ch. 4.5 - In the last example of this section, we prompt the...Ch. 4.5 - Prob. 25SCCh. 4.6 - Prob. 26SCCh. 4.6 - Google has a simple interface for converting...Ch. 4.6 - Consider a modification of the program in Self...Ch. 4.6 - Prob. 29SCCh. 4.6 - Produce a storyboard for a program that compares...Ch. 4.7 - What total is computed when no user input is...Ch. 4.7 - Prob. 32SCCh. 4.7 - What are the values of position and ch when no...Ch. 4.7 - Prob. 34SCCh. 4.7 - Prob. 35SCCh. 4.7 - Prob. 36SCCh. 4.8 - Why is there a statement System.out.println(); in...Ch. 4.8 - How would you change the program to display all...Ch. 4.8 - Prob. 39SCCh. 4.8 - What do the following nested loops display? for...Ch. 4.8 - Prob. 41SCCh. 4.9 - Prob. 42SCCh. 4.9 - You need to write a program for DNA analysis that...Ch. 4.9 - Prob. 44SCCh. 4.9 - Consider the task of finding numbers in a string....Ch. 4.10 - How do you simulate a coin toss with the...Ch. 4.10 - How do you simulate the picking of a random...Ch. 4.10 - Why does the loop body in Dice.java call...Ch. 4.10 - Prob. 49SCCh. 4.10 - Prob. 50SCCh. 4 - Given the variables String stars = ""; String...Ch. 4 - What do these loops print? a. int i = 0; int j =...Ch. 4 - What do these code snippets print? a. int result =...Ch. 4 - Write awhile loop that prints a. All squares less...Ch. 4 - Write a loop that computes a. The sum of all even...Ch. 4 - Provide trace tables for these loops. a. int i =...Ch. 4 - What do these loops print? a. for (int i = 1; i ...Ch. 4 - What is an infinite loop? On your computer, how...Ch. 4 - Write a program trace for the pseudocode in...Ch. 4 - What is an off-by-one error? Give an example from...Ch. 4 - What is a sentinel value? Give a simple rule when...Ch. 4 - Which loop statements does Java support? Give...Ch. 4 - How many iterations do the following loops carry...Ch. 4 - Write pseudocode for a program that prints a...Ch. 4 - Prob. 15RECh. 4 - Write pseudocode for a program that reads a...Ch. 4 - Write pseudocode for a program that reads a...Ch. 4 - Rewrite the following for loop into a while loop....Ch. 4 - Rewrite the following do loop into a while loop....Ch. 4 - Provide trace tables of the following loops. a....Ch. 4 - What do the following loops print? Work out the...Ch. 4 - What do the following program segments print? Find...Ch. 4 - Prob. 23RECh. 4 - Add a storyboard panel for the conversion program...Ch. 4 - In Section 4.6, we decided to show users a list of...Ch. 4 - Change the storyboards in Section 4.6 to support a...Ch. 4 - Draw a flowchart for a program that carries out...Ch. 4 - In Section 4.7.5, the code for finding the largest...Ch. 4 - What are nested loops? Give an example where a...Ch. 4 - The nested loops for (int 1 = 1; 1 = height; i++)...Ch. 4 - Suppose you design an educational game to teach...Ch. 4 - In a travel simulation, Harry will visit one of...Ch. 4 - Write programs with loops that compute a. The sum...Ch. 4 - Write programs that read a sequence of integer...Ch. 4 - Write programs that read a line of input as a...Ch. 4 - Complete the program in How To 4.1 on page 171....Ch. 4 - Write a program that reads a set of floating-point...Ch. 4 - Translate the following pseudocode for finding the...Ch. 4 - Translate the following pseudocode for randomly...Ch. 4 - Write a program that reads a word and prints each...Ch. 4 - Write a program that reads a word and prints the...Ch. 4 - Write a program that reads a word and prints the...Ch. 4 - Write a program that reads a word and prints the...Ch. 4 - Write a program that reads a word and prints all...Ch. 4 - Write a program that reads a string and prints the...Ch. 4 - Write a program that reads a sequence of words and...Ch. 4 - Write a program that prints all powers of 2 from...Ch. 4 - Write a program that reads a number and prints all...Ch. 4 - Prob. 18PECh. 4 - Write a program that reads an integer and...Ch. 4 - Write a program that reads an integer and...Ch. 4 - Write a program to plot the following face.Ch. 4 - Write a graphical application that displays a...Ch. 4 - Enhance Worked Example 4.1 to check that the...Ch. 4 - Mean and standard deviation. Write a program that...Ch. 4 - The Fibonacci numbers are defined by the sequence...Ch. 4 - Factoring of integers. Write a program that asks...Ch. 4 - Prime numbers. Write a program that prompts the...Ch. 4 - The game of Nim. This is a well-known game with a...Ch. 4 - The Drunkards Walk. A drunkard in a grid of...Ch. 4 - The Monty Hall Paradox. Marilyn vos Savant...Ch. 4 - A simple random generator is obtained by the...Ch. 4 - The Buffon Needle Experiment. The following...Ch. 4 - In the 17th century, the discipline of probability...Ch. 4 - Write a program that reads an initial investment...Ch. 4 - Currency conversion. Write a program that first...Ch. 4 - Write a program that first asks the user to type...Ch. 4 - Your company has shares of stock it would like to...Ch. 4 - Write an application to pre-sell a limited number...Ch. 4 - You need to control the number of people who can...Ch. 4 - Credit Card Number Check. The last digit of a...Ch. 4 - In a predator-prey simulation, you compute the...Ch. 4 - Projectile flight. Suppose a cannonball is...Ch. 4 - Radioactive decay of radioactive materials can be...Ch. 4 - The photo at left shows an electric device called...Ch. 4 - Write a graphical application that draws a spiral,...Ch. 4 - Prob. 28PPCh. 4 - Draw a picture of the four-leaved rose whose...
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