AP CSP Procedures #3

A computer science student completes a program and asks a classmate for feedback. The classmate suggests rewriting some of the code to include more procedural abstraction. Which of the following is NOT a benefit of procedural abstraction?

• Making the code more readable

• Making the code run faster

• Providing more opportunities for code reuse

• Reducing the amount of duplicated code

A student has a data file containing 10,000 numerical values. The student is writing a program to compute the average of the numbers contained in the file. Which of the following procedures is most likely to be useful in the student’s program?

• A procedure that returns the quotient when dividing one value by another

• A procedure that returns the sum when adding one value to another

• A procedure that returns the sum of the values in the file

• A procedure that returns true if the file contains any duplicate values and returns false otherwise

Which of the following procedures would be most useful as part of a program to determine whether a word appears in two different text files?

• A procedure getWords, which takes a positive integer n and a text file as input and returns the first n words in the text file.

• A procedure isFound, which takes a word and a text file as input and returns true if the word appears in the text file

• A procedure textMatch, which takes two text files as input and returns true if the two text files are identical.

• A procedure sameSize, which takes two text files as input and returns true if the two text files contain the same number of words.

A student is writing a program that is intended to replace each negative value in a particular column of a spreadsheet with the value 0. Which of the following procedures is most likely to be useful in the student’s program?

• A procedure containsNegatives, which returns true if any negative values appear in the column and returns false otherwise.

• A procedure countNegatives, which returns the number of negative values that appear in the column.

• A procedure findNegative, which returns the row number of the first negative value that appears in the column or -1 if there are no negative values.

• A procedure minimum, which returns the minimum value that appears in the column.

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