Code Segments and Logic Problems

This video tutorial by Mrs. Juliolano from Hamilton Southeastern High School reviews key questions for the AP Computer Science Principles exam. It covers topics such as converting numeric scores to letter grades, understanding parameter X, detecting duplicates in lists, grading logic for homework, adjusting scores with penalties, tracing variable assignments, updating word variables, string manipulation, and determining discount eligibility. The session concludes with a review of the topics covered.

What is provided to students during the AP Computer Science Principles exam to help them understand the code?

• A programming language guide

• An exam reference sheet

• A calculator

• A textbook

Which of the following code segments correctly assigns a letter grade based on a numeric score?

• if score > 90 then grade = 'A' else grade = 'B'

• if score > 90 then grade = 'A' else if score >= 80 then grade = 'B' else grade = 'C'

• if score >= 80 then grade = 'B' else if score > 90 then grade = 'A' else grade = 'C'

• if score < 80 then grade = 'C' else if score <= 90 then grade = 'B' else grade = 'A'

What will be displayed if the parameter x is negative in the given procedure?

• Nothing

• False

• Error

• True

How does the code segment determine if a list contains duplicate values?

• By comparing each element to the element that immediately follows

• By comparing each element to the element that immediately precedes

• By comparing each element to all subsequent elements in the list

• By comparing each element to all other elements in the list

For which values of num correct does the code segment not display the intended grade?

• 8 and 6

• 7 and 6

• 9 and 7

• 9 and 8

What change should be made to the code segment to ensure it reduces the score by penalty correctly?

• Change line 1 to if score < 0

• Change line 1 to if score + penalty > 0

• Interchange lines 3 and 7

• Change line 1 to if score + penalty < 0

What is the final value of r after executing the given code segment?

• 20

• 30

• 40

• 10

Which code segment correctly updates the values of word1, word2, and word3 as shown in the table?

• temp = word1; word1 = word2; word2 = word3; word3 = temp;

• temp = word3; word3 = word1; word1 = temp;

• temp = word1; word1 = word3; word3 = temp;

• temp = word2; word2 = word3; word3 = temp;

Which procedure correctly assigns the initials of a first name and last name to the variable initials?

• initials = concat(prefix(firstName, 1), prefix(lastName, 1))

• initials = concat(prefix(firstName, 2), prefix(lastName, 2))

• initials = prefix(firstName, 1) + prefix(lastName, 1)

• initials = concat(firstName, lastName)

What is a potential harmful effect of using the file cleanup application?

• Files are duplicated on the server

• Infrequently used files are deleted and cannot be accessed without internet

• Files are permanently deleted without backup

• Frequently used files are deleted