Unit 7 Review (AP Comp Sci A)

Consider the method.

What is the output when the ArrayList [3, 6, 9, 12, 14] is passed into the method?

• [3, 6, 9, 9, 9]

• [12. 9, 6, 3]

• [3, 6, 9,]

• [9, 9 6, 3]

• b.    [3, 6, 9, 9]

Consider the method. What will output given the ArrayList values and method call below?

[“carrots”, “celery”, “peppers”, “zucchini”, “onion”, “lettuce”]

hasWords(list, "onion", "radish", “peppers”)

• 0

• 1

• 2

• 3

• true

Consider the method. If the following ArrayList were passed to the method, how many elements would the ArrayList store after executing?

[“oops”, “whoops”, “nooope”, “whoooee”, “yoo”, “hoo”]

removeWord(list)

• 6

• 5

• 4

• 2

• 0

Analyze the method

• [0, 12, 11, 4, 8]

• [0, 11, 4, 8, 12]

• [0, 11, 12, 4, 8]

• [0, 11, 12, 8, 4]

• [0, 11, 12]

Which of the following pieces of code could complete the method such that the method would count the number of Strings that have a length that is greater than 3?

• if(words.get(i).length() < 3) count++;

• if(words.get(i).length() == 3) count++;

• if(words.get(i).length() >= 3) count++;

• if(words.get(i).length() > 3) count++;

• if(words.get(i).length() % 3 == 0) count++;

Given an ArrayList<Integer> nums populated with values, which loop correctly subtracts two from each value in the list and replaces the original value with the lesser value?

• i only

• ii only

• iii only

• i and ii

• ii and iii

The following code is incorrect. The intention of the loop is to find the product of all the values in the ArrayList nums that end in the number zero.  You may assume all the values stored in nums are two-digit numbers. Which of the statements below will correct the code?

• I only

• II only

• III only

• II and III

• I, II, and III

The ArrayList<Character> letters holds the following data: [g, h, i, j, k, l].  If the actions are taken to modify letters, what will then be stored in the ArrayList?

• [g, h, i, n, k, l]

• [g, m, n, k, l]

• [g, h, i, n, l]

• [g, m, i, n, k, l]

• [g, h, i, j, k, l]

Consider the method. What is the output given [1, 2, 3, 4, 5] is passed into list?

• [2, 4, 3, 5, 3, 6, 14, 46]

• [1, 2, 4, 6, 14, 46]

• [2, 4, 6, 9, 14, 46]

• [1, 2, 3, 4, 5, 6, 9, 14, 23, 46]

• [2, 4, 6, 14, 46]