AP CSP Practice Test On Arrays (ArrayList And 2D Arrays)

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Which of the following initializes an 8 × 10 matrix with integer values that are perfect squares? (0 is a perfect square.) I int[][] mat = new int[8][10]; II int[][] mat = new int[8][10]; for (int r = 0; r < mat.length; r++) for (int c = 0; c < mat[r].length; c++) mat[r][c] = r * r; III int[][] mat = new int[8][10]; for (int c = 0; c < mat[r].length; c++) for (int r = 0; r < mat.length; r++) mat[r][c] = c * c;

II and III only III only II only I and II only

Correct Answer:

I and II only

Explanation:

Correct answer: I and II only

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