AP Computer Science A

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ArrayList<Integer>

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AP Computer Science A

Definition

An ArrayList is a resizable dynamic data structure in Java that stores elements sequentially. In this case, "<Integer>" specifies that this particular ArrayList can only store Integer objects.

"ArrayList<Integer>" also found in:

Practice Questions (6)

What does the following code do? public static int[] codeBlock(ArrayList<Integer> arrayList) { int[] newArray = new int[arrayList.size()]; for (int i = 0; i < arrayList.size(); i++) { newArray[i] = arrayList.get(i); } return newArray; }
What does the following code do? public static int codeBlock(ArrayList<Integer> array) { int x = 0; for (int y: array) { x += y; } return x; }
What does the following code do? public static boolean codeBlock(ArrayList<Integer> array) { for (int i = 0; i < array.size() - 1; i++) { for (int j = i + 1; j < array.size(); j++) { if (array.get(j) == array.get(i)) { return true; } } } return false; }
What does the following code do? public static ArrayList<Integer> codeBlock(ArrayList<Integer> array) { int lastItem = array.get(array.size()- 1) for (int i = array.size() - 1; i > 0; i--) { array.set(i, array.get(i-1)); } array.set(0, lastItem); return array; }
What does the following code do? public static ArrayList<Integer> codeBlock(int[] array) { ArrayList<Integer> newArray = new ArrayList<Integer>(); for (int i: array) { newArray.add(i); } return newArray; }
What does the following code do? public static boolean codeBlock(ArrayList<Integer> array) { for (int i: array) { if (i % 3 == 1 || i % 3 == 2) { return false; } } return true; }

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ArrayList<Integer>

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AP Computer Science A

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Practice Questions (6)

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ArrayList<Integer>

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AP Computer Science A

Definition

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"ArrayList<Integer>" also found in:

Practice Questions (6)

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