
Java: An Introduction to Problem Solving and Programming (8th Edition)
8th Edition
ISBN: 9780134462035
Author: Walter Savitch
Publisher: PEARSON
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Textbook Question
Chapter 4, Problem 8E
Write a loop that will count the number of blank characters in a given string.
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Consider the following statement, which is intended to assign the value of the expression,
the variable result Assume that the double variables. x-ya and b have been properly
declared and initialized.
(xy)
to
double result = missing code /:
17
Mark for Review
Which of the following can replace / missing code / so that the statement works as intended?
Math.sqrt((x + y)
2/ Math.abs(a, b))
Math.sqrt((x + y) 2/ Math.abs(a - b))
Math.sqrt(Math.pow(x + y, 2) / Math. abs(a, b))
Math.sqrt(Math.pow(x + y, 2) / Math.abs (a - b))
Consider the following code segment, which is intended to print the digits of the two-digit int number
num in reverse order. For example, if num has the value 75, the code segment should print 57.
Assume that num has been properly declared and initialized.
/missing code */
System.out.print (onesDigit);
System.out.print (tensDigit);
14
Mark for Review
Which of the following can be used to replace / missing code so that the code
segment works as intended?
int onesDigit num 10;
int tensDigit num / 10;
int onesDigit- num / 10;
int tensDigit num 10;
int onesDigit -10/num;
int tensDigit 10 num;
-Undo
int onesDigit
num
100;
Undo
int tensDigit-num / 100;
The following code segment is intended to round yal to the nearest integer and print the result
double val--0.7
int roundedVal (int) (val +0.51
System.out.println(roundedValu
25
Mark for Review
Which of the following best describes the behavior of the code segment?
The code segment does not work as intended because the expression
(val +0.5) should be cast to a double instead of an int
The code segment does not work as intended because val should be cast
to an int before 0.5 is added to it.
Highlights & Notes
Reference
Undo
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The code segment does not work as intended because the expression
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Chapter 4 Solutions
Java: An Introduction to Problem Solving and Programming (8th Edition)
Ch. 4.1 - What output is produced by the following code? int...Ch. 4.1 - Can the body of a while loop execute zero times?...Ch. 4.1 - What output is produced by the following code? int...Ch. 4.1 - Revise the following code so that it uses a while...Ch. 4.1 - What output is produced by the following code? int...Ch. 4.1 - Imagine a program that reads the population of a...Ch. 4.1 - Prob. 7STQCh. 4.1 - What output is produced by the following code? int...Ch. 4.1 - What output is produced by the following code? for...Ch. 4.1 - What output is produced by the following code? for...
Ch. 4.1 - Prob. 11STQCh. 4.1 - Write a for statement that displays the even...Ch. 4.1 - Prob. 13STQCh. 4.2 - Write a Java loop that will display the phrase One...Ch. 4.2 - Write a Java loop that will set the variable...Ch. 4.2 - Write a Java loop that will read a list of numbers...Ch. 4.2 - What output is produced by the following code? for...Ch. 4.2 - What output is produced by the following code? for...Ch. 4.2 - What output is produced by the following code? for...Ch. 4.2 - Revise the loop shown in Listing 4.6 to use a...Ch. 4.2 - What is the bug in the code in the section Tracing...Ch. 4.2 - Add some suitable output statements to the...Ch. 4.2 - What is the bug in the code in the previous...Ch. 4.2 - Prob. 24STQCh. 4.2 - Suppose that you did not have assertion checking...Ch. 4.3 - Prob. 26STQCh. 4 - Write a fragment of code that will read words from...Ch. 4 - Develop an algorithm for computing the...Ch. 4 - Develop an algorithm for a simple game of guessing...Ch. 4 - Write a fragment of code that will compute the sum...Ch. 4 - Convert the following code so that it uses nested...Ch. 4 - Write a for statement to compute the sum 1 + 22 +...Ch. 4 - (Optional) Repeat the previous question, but use...Ch. 4 - Write a loop that will count the number of blank...Ch. 4 - Write a loop that will create a new string that is...Ch. 4 - Write a program that will compute statistics for...Ch. 4 - Suppose we attend a party. To be sociable, we will...Ch. 4 - Define an enumeration for each of the months in...Ch. 4 - Write a fragment of code that computes the final...Ch. 4 - Suppose that you work for a beverage company. The...Ch. 4 - Suppose that we want to compute the geometric mean...Ch. 4 - Prob. 16ECh. 4 - Create an applet that draws a pattern of circles...Ch. 4 - Prob. 18ECh. 4 - What does the following fragment of code display?...Ch. 4 - Repeat Practice Program 4 of Chapter 3, but use a...Ch. 4 - Write a program that implements your algorithm...Ch. 4 - Repeat Practice Program 5 of Chapter 3, but use a...Ch. 4 - Write a program to read a list of nonnegative...Ch. 4 - Write a program to read a list of exam scores...Ch. 4 - Combine the programs from Programming Projects 5...Ch. 4 - Write a program that simulates the Magic 8 Ball...Ch. 4 - Whats for dinner? Let the computer decide. Write a...Ch. 4 - Write a program that implements your algorithm...Ch. 4 - Prob. 2PPCh. 4 - Write a program that reads a bank account balance...Ch. 4 - Modify Programming Project 5 from Chapter 2 to...Ch. 4 - Write a program that asks the user to enter the...Ch. 4 - Write a program that simulates a bouncing ball by...Ch. 4 - You have three identical prizes to give away and a...Ch. 4 - Prob. 9PPCh. 4 - Holy digits Batman! The Riddler is planning his...Ch. 4 - Your country is at war and your enemies are using...Ch. 4 - Prob. 12PPCh. 4 - Prob. 13PPCh. 4 - Prob. 14PPCh. 4 - (Challenge) Repeat the previous project, but...Ch. 4 - Write a JavaFx application that displays a series...
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- In the following code segment, mon and tue are properly declared String variables. String strl-mon.substring(9. mon.indexOf(" "). String str2-tue.substring(tue.indexOf(" ") + 1). System.out.println(strl+and+str2): க 21 Mark for Review For which of the following values of mon and tue will the code segment print "cloudy and foggy"? mon tue "cloudy today" "foggy tomorrow" mon tue "cloudy today" "tomorrow foggy" mon tue "today cloudy" "foggy tomorrow" mon tue "today cloudy" "tomorrow foggy"arrow_forwardG Consider the following code segment, which is intended to assign to num a random integer value between min and max, inclusive, each with an equal chance of being assigned to num. Assume that min and max are integer variables and that the value of max is greater than the value of min. 24 Mark for Review Which of the following can replace /* missing code */ so that the code segment works as intended? double rn = Math.random();_ int num = /* missing code */ ;_ D (int) (rn * max) + min ABC (A) (int) (rn * (max- min)) + min (B (int) (rn * (max min)) + 1 (int) (rn * (max min + 1)) + minarrow_forwardWrite the truth table for each of the following logic functions: (a) FX Y+X'. Y'. Z (b) FW' X + Y' · Z' + X' · Z (c) F=W+X' · (Y' + Z) . . (d) F A B+ B' C+C' D + D' A .arrow_forward
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