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2D Arrays

Printing 2D Arrays​

info

Best & Fastest Method: Using for-Each Loop

for (int[] el:newArr) {
    for (int el2:el) {
        System.out.print(el2 + " ");
    }
    System.out.println();
}

Copying a 2D Array to another 2D Array​

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int[][] arr = {{2, 3, 54, 56}, {5, 4, 324, 23}, {23, 344, 45, 33}, {23, 34, 11, 3}};    // a 2D array
int[][] newArr = new int[arr.length][arr[0].length];

for (int i=0; i<arr.length; i++) {  // range is the ROW
    newArr[i] = Arrays.copyOf(arr[i], arr[i].length);   // copies all COLUMNS of ROW "i" of arr[i] to all COLUMNS of ROW "i" of newArr[i]
}