Counting using a multidimension array

Question

I want to create an multidimensional array that will count. This is the code I have so far and don't know where to go from here. When I print this out I want it to look like 0,1,2,3,4,5,6,7,8,9,10,etc.

public static void main(String[] args) {

        int car[][] = new int[4][4];

        for(int row = 0; row < car.length; row++){
            for(int col = 0; col < car[1].length; col++){
                System.out.print(car[row][col] + ",");
            }
            System.out.println();
        }

    }

Hi! What's last item you expect in the series? In other words, to which value to you wish to count? Keep in mind your array values haven't been initialized yet. All the values will be zero at this stage. — Luke Eller
– Luke Eller, Commented Apr 6, 2020 at 4:52

Miłosz Tomkiel · Accepted Answer · 2020-04-05 22:12:24Z

1

you're creating empty array so every field has value 0

try this:

public static void main(String[] args) {

        int car[][] = new int[4][4];

        int index = 0;

        for(int row = 0; row < car.length; row++){
            for(int col = 0; col < car[1].length; col++){
                car[row][col] = index++;
                System.out.print(car[row][col] + ",");
            }
            System.out.println();
        }

    }

answered Apr 5, 2020 at 22:12

Miłosz Tomkiel

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Comments

ControlAltDel · Accepted Answer · 2020-04-05 22:14:08Z

0

You need to set the values before printing them

    for(int row = 0; row < car.length; row++){
        for(int col = 0; col < car[1].length; col++){
            car[row][col] = row * 4 + col;
            System.out.print(car[row][col] + ",");
        }
        System.out.println();
    }

But it's silly and pointless to use a multi-dimensional array like this.In my experience, Multi-dimensional arrays are useful in a much more limited scope than how people play with them when they are learning.

answered Apr 5, 2020 at 22:14

ControlAltDel

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Comments

Wallace Vinicius · Accepted Answer · 2020-04-06 00:40:31Z

0

Use this:

public static void main(String[] agrs) {


    int car[][] = new int[4][4];
    int i = 0;

    for(int row = 0; row < car.length; row++){

        for(int col = 0; col < car[1].length; col++){
            car[row][col] = i++;                
            System.out.print(car[row][col] + ",");
        }

    }

}

answered Apr 6, 2020 at 0:40

Wallace Vinicius

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