Enhanced For Loop For 2D Arrays

Question

Which of the following code segments correctly uses nested enhanced for loops to print all elements of a 2D integer array?

Accepted Answer

```java
int[][] matrix = {{1,2,3},{4,5,6}};
for (int[] row : matrix) {
    for (int num : row) {
        System.out.print(num + " ");
    }
}
```

Answer

```java
int[][] matrix = {{1,2,3},{4,5,6}};
for (int num : matrix) {
    System.out.print(num + " ");
}
```

Answer

```java
int[][] matrix = {{1,2,3},{4,5,6}};
for (int i = 0; i < matrix.length; i++) {
    for (int j = 0; j < matrix[0].length; j++) {
        System.out.print(matrix[i][j] + " ");
    }
}
```

Answer

```java
int[][] matrix = {{1,2,3},{4,5,6}};
for (int[] row : matrix) {
    System.out.println(row);
}
```

Enhanced For Loop For 2D Arrays

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