AP CSP Unit 5, Quiz 4 Review

After running the following code segment, what is contained in the array data?

• [3, 1, 8, 4, 4]

• [2, 3, 4, 5, 6]

• [2, 3, 4, 5, 4]

• [3, 1, 8, 4 null]

How many times will this loop iterate? 

• 4
• 7
• 5
• 6

A syntax error means your code has a 'grammar' mistake or you used symbols/operations incorrectly

• True
• False

Which of the following is not an action a programmer should take when debugging a segment of code?

• Display the value of variables at various points during the program

• Ask a friend or collaborator to look over the code segment to see if they are able to find any errors

• Delete all the code and re-type it

• Check the names of each variable for spelling and capitalization errors

You are writing a reply function for a text messaging app. You want to swap the sender and receiver so that the value currently in From ends up as the value in To and To ends up in From. Which code segments will correctly swap the values?

• to = from

  from = to

• from = var temp

  to = temp

  from = to

• var temp = from

  from = to

  to = from

• var temp = from

  from = to

  to = temp

Any sequence of characters between quotation marks

• String
• Rope
• Values
• Numbers

Use the following code segment to answer this question.

What would be the output of the equation procedure when a is 9, b is 10, and c is 4?

• 18

• 72

• -72

• 360

Use the following code segment to answer this question:

Assume the index of the first item in the list is 1.

What is the new value of aList[3] after this code segment?

• 0

• 1

• 2

• 3

Two lists, listA and listB, both contain integer elements. The following segment of code processes these lists. Note

that lists begin at index 1.

If the lists are initialized as follows, what will listB contain after the segment of code executes?

listA ← [2, 4, 5, 7]

listB ← [1, 8, 9]

• [2, 4, 1, 8, 9, 5, 7]

• [7, 7, 1, 8, 9, 2, 4]

• [4, 2, 1, 8, 9, 5, 7]

• [1, 2, 4, 5, 7, 8, 9]

Consider the following lists.

I. list1 ← [2, 4, 5, 7, 11, 33]

II. list2 ← [-2, -1, 0, 1, 2, 3, 4, 5, ...., 900, 901, 902]

III. list3 ←[2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 0 ]

For which of the following lists would a binary search be more efficient than a linear search?

• II only

• III only

• II and III only

• I, II, and III