Dynamic 2D Array Creation

Question

Which of the following code segments correctly defines and utilizes a method to create a two-dimensional `int` array with dimensions specified by its arguments?

Accepted Answer

```java
public class MatrixCreator {
    public static int[][] createMatrix(int rows, int cols) {
        return new int[rows][cols];
    }
    public static void main(String[] args) {
        int[][] matrix = createMatrix(3, 4);
        System.out.println(matrix.length + "x" + matrix[0].length);
    }
}
```

Answer

```java
public class MatrixCreator {
    public static int[][] createMatrix(int rows, int cols) {
        return null;
    }
    public static void main(String[] args) {
        int[][] matrix = createMatrix(3, 4);
        System.out.println(matrix.length + "x" + matrix[0].length);
    }
}
```

Answer

```java
public class MatrixCreator {
    public static int[][] createMatrix(int rows, int cols) {
        int[][] matrix = new int[rows][cols];
        return matrix;
    }
    public static void main(String[] args) {
        int[][] matrix = createMatrix(3, 4);
        System.out.println(matrix.length + "x" + matrix[0].length);
    }
}
```

Answer

```java
public class MatrixCreator {
    public static int[][] createMatrix(int rows, int cols) {
        return new int[rows-1][cols-1];
    }
    public static void main(String[] args) {
        int[][] matrix = createMatrix(3, 4);
        System.out.println(matrix.length + "x" + matrix[0].length);
    }
}
```

Rank	User	Correct Count	Attempt Count	Time	Score
#1	bommasam000	1	4	1m 44s	-34
#2	ajcantuwilson0325	0	1	2m 00s	-130
#3	varunrajaram1	0	1	4m 37s	-287
#4	psak12	0	1	16m 32s	-1,002

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