Page 557 - AP Computer Science A, 7th edition
P. 557
the temporary ArrayList
Set cards to the temporary ArrayList
Here is the method that implements this algorithm.
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public void shuffle() {
int size = cards.size();
List<Card> temp = new ArrayList<Card>(); for (int j = 1; j < size; j++)
{
int index = (int) (Math.random() ∗ size);
temp.add(cards.get(index)); }
cards = temp; }
The method does not work as intended. Which of the following changes to shuffle would ensure that it works correctly?
Replace Line 5 with I
for (int j = 0; j < size; j++)
Replace Line 7 with
