APCSA Unit 7

Which of these declarations will cause an error?

• ArrayList<int> list = new ArrayList<>();

• ArrayList<Integer> list = new ArrayList<>();

• ArrayList<Object> list = new ArrayList<>();

• ArrayList<Boolean> list = new ArrayList<>();

What is printed when the code segment executes?

• 2

• 13

• 15

• 20

This method is intended to remove all values in list which are equal to n. Which of these describes the functionality of the method.

• The method does not function as intended because it skips elements while looping.

• The method does not function as intended because it should use == instead of .equals

• The method does not function as intended because elements cannot be removed from an ArrayList

• The method functions as intended.

What are the contents of myList after the code segment executes?

• ["dairy","hay","pesticide"]

• ["dairy","hay","ranch"]

• ["poultry","pesticide","ranch"]

• ["ranch","poultry","pesticide"]

What is printed when the code segment executes?

• [1,4,7]

• [6,4]

• [4,9]

• [4,7,9]

Which of these best describes the list of values returned by this mystery method?

• the absolute values of the values in the given array

• the frequencies of the values in the given array

• the cumulative sums of the values in the given array

• the indices of the values int he given array

What algorithm is implemented by this mystery method?

• binary search

• linear search

• insertion sort

• selection sort

What algorithm is implemented by this mystery method?

• binary search

• linear search

• insertion sort

• selection sort

What algorithm is implemented by this mystery method?

• binary search

• linear search

• insertion sort

• selection sort

Which of these is the result of just the first iteration of a selection sort applied to [5, 3, 8, 2]?

• [3, 5, 8, 2]

• [2, 3, 8, 5]

• [2, 5, 3, 8]

• [2, 3, 5, 8]