Mathematics, Science, Computers

10th -

12thgrade

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2d array Java

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3 questions

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  • 1. Multiple Choice
    30 seconds
    1 pt

    Which of the following statements correctly declares a two-dimensional integer array?

    int Matrix[ ] = new int[5,4];

    int Matrix[ ]; Matrix = new int[5,4];

    int Matrix[ ][ ] = new int[5][4];

    int Matrix[ ][ ] = int[5][4];

  • 2. Multiple Choice
    30 seconds
    1 pt

    How would you get the value 6 out of the following array int[][] a = {{2, 4, 6, 8}, {1, 2, 3, 4}};? Remember each set of curly braces represents a row, or a single dimensional array.

    a [0][3]

    a [1][3]

    c) a[0][2]

    d) a[2][0]

    e) a[3][1]

  • 3. Multiple Choice
    30 seconds
    1 pt

    How many columns does a have if it is created as follows

    int[][] a = {{2, 4, 6, 8}, {1, 2, 3, 4}};?

    3

    4

    2

    1

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