ArrayList Traversals Practice Test

What will be the output of the given code snippet?

// Part A: Setup

ArrayList<Integer> numbers = new ArrayList<>();

// Part B: Find maximum

int maxValue = Integer.MIN_VALUE;

for (int value : numbers) { // traverse list

    if (value > maxValue) {

        maxValue = value;

    }

}

// Part C: Handle empty list

if (numbers.size() == 0) {

    System.out.println("empty");

} else {

    System.out.println(maxValue);

}

How does the code modify the ArrayList?

// Part A: Setup

ArrayList<Integer> scores = new ArrayList<>();

scores.add(5);

scores.add(12);

scores.add(10);

// Part B: Conditional modification

for (int i = 0; i < scores.size(); i++) { // traverse by index

    if (scores.get(i) > 10) {

        scores.set(i, scores.get(i) * 2); // update element

    }

}

// Part C: Output

System.out.println(scores);