Starting Out with Java: From Control Structures through Data Structures (4th Edition) (What's New in Computer Science)
4th Edition
ISBN: 9780134787961
Author: Tony Gaddis, Godfrey Muganda
Publisher: PEARSON
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Chapter 4, Problem 1PC
Sum of Numbers
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Please Show an Example in R:
Find (or invent) some data (not from the “Data” directory supplied with EssentialR) and import it into R. (It is not a bad idea to include a commented line with units for each variable in your .txt or.csv file). a) What did you have to do to “clean it up” so it would read in? b) Are you satisfied with the console output of summary(yourdata)? Did all the variables import in the way (format) you thought they should? c) Include the output of summary(yourdata) and head(yourdata).
7. Convert Standard POS form to Canonical POS form.
(A+B)(A+ C)(B+C)
8. Given that F(a, b, c, d) = Σm(1, 3, 4, 6, 8, 9, 12),
(i) Write the product of maxterms (canonical POS) for F.
(ii) Write the canonical SOP and canonical POS for F.
1. Evaluate the following expression when A = 1, B = O, C = 1, D = 0
F = AB + CD + (A + B)C
2. Find F, the complement of function F, Write your answer using overbars.
F(W, X, Y, Z) = WX + YZ +XZ
3. Determine the truth table for the function
F = XY+XZ
4. Show with a truth table that the following is true:
X(YZ) = XY+XZ
Chapter 4 Solutions
Starting Out with Java: From Control Structures through Data Structures (4th Edition) (What's New in Computer Science)
Ch. 4.1 - What will the following program segments display?...Ch. 4.2 - How many times will Hello World be printed in the...Ch. 4.2 - How many times will I love Java programming! be...Ch. 4.3 - Write an input validation loop that asks the user...Ch. 4.3 - Write an input validation loop that asks the user...Ch. 4.3 - Write an input validation loop that asks the user...Ch. 4.5 - Name the three expressions that appear inside the...Ch. 4.5 - You want to write a for loop that displays I love...Ch. 4.5 - What will the following program segments display?...Ch. 4.5 - Write a for loop that displays your name 10 times.
Ch. 4.5 - Write a for loop that displays all of the odd...Ch. 4.5 - Write a for loop that displays every fifth number,...Ch. 4.6 - Write a for loop that repeats seven times, asking...Ch. 4.6 - In the following program segment, which variable...Ch. 4.6 - Prob. 4.15CPCh. 4.10 - What is the difference between an input file and...Ch. 4.10 - What import statement will you need in a program...Ch. 4.10 - What class do you use to write data to a file?Ch. 4.10 - Write code that does the following: opens a file...Ch. 4.10 - What classes do you use to read data from a file?Ch. 4.10 - Write code that does the following: opens a file...Ch. 4.10 - You are opening an existing file for output. How...Ch. 4.10 - What clause must you write in the header of a...Ch. 4.11 - Assume x is an int variable, and rand references a...Ch. 4.11 - Assume x is an int variable, and rand references a...Ch. 4.11 - Assume x is an int variable, and rand references a...Ch. 4.11 - Assume x is a double variable, and rand references...Ch. 4 - Prob. 1MCCh. 4 - Prob. 2MCCh. 4 - Prob. 3MCCh. 4 - What is each repetition of a loop known as? a....Ch. 4 - This is a variable that controls the number of...Ch. 4 - The while loop is this type of loop. a. pretest b....Ch. 4 - The do-while loop is this type of loop. a. pretest...Ch. 4 - The for loop is this type of loop. a. pretest b....Ch. 4 - This type of loop has no way of ending and repeats...Ch. 4 - This type of loop always executes at least once....Ch. 4 - This expression is executed by the for loop only...Ch. 4 - Prob. 12MCCh. 4 - This is a special value that signals when there...Ch. 4 - To open a file for writing, you use the following...Ch. 4 - To open a file for reading, you use the following...Ch. 4 - Prob. 16MCCh. 4 - This class allows you to use the print and println...Ch. 4 - This class allows you to read a line from a file....Ch. 4 - True or False: The while loop is a pretest loop.Ch. 4 - True or False: The do-while loop is a pretest...Ch. 4 - True or False: The for loop is a posttest loop.Ch. 4 - True or False: It is not necessary to initialize...Ch. 4 - True or False: One limitation of the for loop is...Ch. 4 - True or False: A variable may be defined in the...Ch. 4 - True or False: In a nested loop, the inner loop...Ch. 4 - True or False: To calculate the total number of...Ch. 4 - // This code contains ERRORS! // It adds two...Ch. 4 - Prob. 2FTECh. 4 - // This code contains ERRORS! int choice, num1,...Ch. 4 - Prob. 4FTECh. 4 - Write a while loop that lets the user enter a...Ch. 4 - Write a do-whi1e loop that asks the user to enter...Ch. 4 - Write a for loop that displays the following set...Ch. 4 - Write a loop that asks the user to enter a number....Ch. 4 - Write a for loop that calculates the total of the...Ch. 4 - Write a nested loop that displays 10 rows of #...Ch. 4 - Convert the while loop in the following code to a...Ch. 4 - Convert the do-while loop in the following code to...Ch. 4 - Convert the following while loop to a for loop:...Ch. 4 - Convert the following for loop to a while loop:...Ch. 4 - Write an input validation loop that asks the user...Ch. 4 - Write an input validation loop that asks the user...Ch. 4 - Write nested loops to draw this pattern:Ch. 4 - Write nested loops to draw this pattern: ## # # #...Ch. 4 - Complete the following program so it displays a...Ch. 4 - Complete the following program so it performs the...Ch. 4 - Prob. 17AWCh. 4 - Prob. 18AWCh. 4 - Modify the code you wrote in Question 18 so it...Ch. 4 - Write code that opens a file named NumberList.txt...Ch. 4 - Prob. 1SACh. 4 - Why should you indent the statements in the body...Ch. 4 - Describe the difference between pretest loops and...Ch. 4 - Why are the statements in the body of a loop...Ch. 4 - Describe the difference between the while loop and...Ch. 4 - Which loop should you use in situations where you...Ch. 4 - Which loop should you use in situations where you...Ch. 4 - Which loop should you use when you know the number...Ch. 4 - Why is it critical that accumulator variables are...Ch. 4 - What is an infinite loop? Write the code for an...Ch. 4 - Prob. 11SACh. 4 - What does it mean to let the user control a loop?Ch. 4 - What is the advantage of using a sentinel?Ch. 4 - Prob. 14SACh. 4 - Describe a programming problem requiring the use...Ch. 4 - How does a file buffer increase a programs...Ch. 4 - Why should a program close a file when its...Ch. 4 - What is a files read position? Where is the read...Ch. 4 - When writing data to a file, what is the...Ch. 4 - What does the Scanner classs hasNext method return...Ch. 4 - What is a potential error that can occur when a...Ch. 4 - Prob. 22SACh. 4 - How do you open a file so that new data will be...Ch. 4 - Sum of Numbers Write a program that asks the user...Ch. 4 - Distance Traveled The distance a vehicle travels...Ch. 4 - Distance File Modify the program you wrote for...Ch. 4 - Pennies for Pay Write a program that calculates...Ch. 4 - Prob. 5PCCh. 4 - File Letter Counter Write a program that asks the...Ch. 4 - Hotel Occupancy A hotels occupancy rate is...Ch. 4 - Average Rainfall Write a program that uses nested...Ch. 4 - Population Write a program that will predict the...Ch. 4 - Largest and Smallest Write a program with a loop...Ch. 4 - Celsius to Fahrenheit Table Write a program that...Ch. 4 - Bar Chart Write a program that asks the user to...Ch. 4 - File Head Display Write a program that asks the...Ch. 4 - Line Numbers Write a program that asks the user...Ch. 4 - Uppercase File Converter Write a program that asks...Ch. 4 - Budget Analysis Write a program that asks the user...Ch. 4 - Random Number Guessing Game Write a program that...Ch. 4 - Random Number Guessing Game Enhancement Enhance...Ch. 4 - ESP Game Write a program that tests your ESP...Ch. 4 - Square Display Write a program that asks the user...Ch. 4 - Dice Game Write a program that plays a simple dice...Ch. 4 - Prob. 22PCCh. 4 - Personal Web Page Generator Write a program that...
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- . 6. Find the dual of the Boolean expressions. (swap + with and O with 1; do not complement variables). a) A + BC b) (X + Y)(X + Z) c) P+Q+ RSarrow_forward5. Simplify the following Boolean expression. Show each simplification step and identity used. a) ABAB + ABC b) (MN)(M + P) + MParrow_forwardBoolean Algebra HW #4 Show all intermediate steps (truth tables, algebraic steps, and justifications such as identities or theorems) for full credit. 1. Evaluate the following expression when A = 1, B = O, C = 1, D = 0 F = AB + CD + (A+B)C 2. Find F, the complement of function F, Write your answer using overbars. F(W,X,Y,Z) = WX+YZ+XZ 3. Determine the truth table for the function F=XY+XZ 4. Show with a truth table that the following is true: X(Y+Z) = XY+XZ 5. Simplify the following Boolean expression. Show each simplification step and identity used. a) AB + AB + ABC b) (M+N)(M + P) + MP 6. Find the dual of the Boolean expressions. (swap + with and O with 1; do not complement variables). a) ABC b) (X + Y)(X + Z) c) P+Q+ RS 7. Convert Standard POS form to Canonical POS form. • (A+B)(Ā + C) (B+C) 8. Given that F(a, b, c, d) = Em(1, 3, 4, 6, 8, 9, 12) (i) Write the product of maxterms (canonical POS) for F. (ii) Write the canonical SOP and canonical POS for F.arrow_forward
- 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))arrow_forwardConsider 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;arrow_forwardThe 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 Undo The code segment does not work as intended because the expression -Unda positive ר .arrow_forward
- 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
- Use the theorems of switching algebra to simplify each of the following logic functions: (a) F W X Y Z (W X Y . Z'+W X Y Z (b) FA B+ A . B C D+A B.D. E' + A B C W X Y Z+W X Y' - Z) E + C D E .arrow_forwardWrite the canonical sum and product for each of the following logic functions: (a) F = Σx,y(1,2) (c) F=ΣA,B,C(2,4,6,7) = (b) FПAB(0,1,2) (d) F=Пw.x,y(0,1,3,4,5)arrow_forwardFor the following truth table: a) Write the canonical SOP. Row × Y Z F 0 0 0 0 0 b) Write the canonical POS. | 0 0 1 2 0 1 0 1 3 0 1 1 0 4 1 0 0 0 5 1 0 1 1 6 1 1 0 0 7 1 1 1 1arrow_forward
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