Introduction to Java Programming and Data Structures, Comprehensive Version, Student Value Edition (11th Edition)
11th Edition
ISBN: 9780134671604
Author: Y. Daniel Liang
Publisher: PEARSON
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Textbook Question
Chapter 2.9, Problem 2.9.8CP
Suppose m and r are integers. Write a Java expression for mr2 to obtain a floating-point result.
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7. See the code below and solve the following.
public class Test {
public static void main(String[] args) {
int result = 0;
}
result = fn(2,3);
System.out.println("The result is:
+ result);
// fn(x, 1) = x
// fn(x, y)
=
fn(x, y-1) + 2, when y>1
public static int fn(int x, int y) {
if (x <= 1)
return x;
else
return fn(x, y-1) + 2;
}
}
7-1. This program has a bug that leads to infinite recursion. Modify fn(int x, int y) method to fix
the problem. (2 point)
7-2. Manually trace the recursive call, fn(2,3) and show the output (step by step). (2 point)
7-3. Can you identify the Base Case in recursive method fn(int x, int y)? (1 point)
Chapter 2 Solutions
Introduction to Java Programming and Data Structures, Comprehensive Version, Student Value Edition (11th Edition)
Ch. 2.2 - Identify and fix the errors in the following code:...Ch. 2.3 - How do you write a statement to let the user enter...Ch. 2.3 - Prob. 2.3.2CPCh. 2.4 - Prob. 2.4.1CPCh. 2.5 - Identify and fix the errors in the following code:...Ch. 2.6 - Identify and fix the errors in the following code:...Ch. 2.7 - Prob. 2.7.1CPCh. 2.8 - Prob. 2.8.1CPCh. 2.8 - Translate the following algorithm into Java code:...Ch. 2.9 - Prob. 2.9.1CP
Ch. 2.9 - Prob. 2.9.2CPCh. 2.9 - Prob. 2.9.3CPCh. 2.9 - Prob. 2.9.4CPCh. 2.9 - Prob. 2.9.5CPCh. 2.9 - Prob. 2.9.6CPCh. 2.9 - Write a statement to display the result of 23.5.Ch. 2.9 - Suppose m and r are integers. Write a Java...Ch. 2.10 - How many accurate digits are stored in a f1oat or...Ch. 2.10 - Prob. 2.10.2CPCh. 2.10 - Prob. 2.10.3CPCh. 2.10 - Which of the following are correct literals?...Ch. 2.11 - How would you write the following arithmetic...Ch. 2.12 - Prob. 2.12.1CPCh. 2.13 - Prob. 2.13.1CPCh. 2.14 - Which of these statements are true? a. Any...Ch. 2.14 - Show the output of the following code: int a = 6;...Ch. 2.15 - Prob. 2.15.1CPCh. 2.15 - Prob. 2.15.2CPCh. 2.15 - Show the following output: float f =12.5F; int i =...Ch. 2.15 - If you change (int) (tax 100) / 100.0 to (int)...Ch. 2.15 - Prob. 2.15.5CPCh. 2.15 - Write an expression that rounds up a double value...Ch. 2.16 - How would you write the following arithmetic...Ch. 2.17 - Show the output of Listing 2.10 with the input...Ch. 2.18 - Can you declare a variable as int and later...Ch. 2.18 - Prob. 2.18.2CPCh. 2.18 - Will overflow cause a runtime error?Ch. 2.18 - Prob. 2.18.4CPCh. 2 - (Convert Celsius to Fahrenheit) Write a program...Ch. 2 - (Compute the volume of a cylinder) Write a program...Ch. 2 - (Convert feet into meters) Write a program that...Ch. 2 - (Convert pounds into kilograms) Write a program...Ch. 2 - (Financial application: calculate tips) Write a...Ch. 2 - (Sum the digits in an integer) Write a program...Ch. 2 - (Find the number of years) Write a program that...Ch. 2 - (Current time) Listing 2.7. ShowCurrentTime.java,...Ch. 2 - (Physics: acceleration) Average acceleration is...Ch. 2 - (Science: calculating energy) Write a program that...Ch. 2 - (Population projection) Rewrite Programming...Ch. 2 - (Physics: finding runway length) Given an...Ch. 2 - (Financial application: compound value) Suppose...Ch. 2 - (Health application: computing BMI) Body Mass...Ch. 2 - (Geometry: distance of two points) Write a program...Ch. 2 - (Geometry: area of a hexagon) Write a program that...Ch. 2 - (Science: wind-chill temperature) How cold is it...Ch. 2 - (Print a table) Write a program that displays the...Ch. 2 - (Geometry: area of a triangle) Write a program...Ch. 2 - (Financial application: calculate interest) If you...Ch. 2 - (Financial application: calculate future...Ch. 2 - (Financial application: monetary units) Rewrite...Ch. 2 - (Cost of driving) Write a program that prompts the...
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