Java Array Loop

You need to print new lines in between, using System.out.println(). Also, println() always prints a new line (as if pressing Enter) after the string. There's also System.out.print(), which doesn't put a new line after it.

Think about when you need the new lines. After every row or column? Perhaps an extra one after every set to make an empty line.

EDIT: I've indented your code properly. It'll be a bit easier to see where to add code then.

int list[][][] = new int [3][5][3]; //create rows, column, units (buildings) array structure.
int i,j,k; //assign variables for row, column and unit (building).
int ctr = 0; //set counter.

//create array
for (i=0; i<3; i++) {
    for (j=0; j<5; j++) {
        for (k=0; k<3; k++) {
            list[i][j][k] = ctr++;
        }
    }
}


for (i=0; i<3; i++) { //Prints 3 sections.
    for (j=0; j<5; j++) { //Prints 5 rows.
        for (k=0; k<3; k++) { //Prints 3 columns.
            //Format array
            System.out.println(list[i][j][k] + " ");
        }
    }
}

1. It would help you (and the readers) understand your logic if instead of i, j, k you used meaningful variables, such as row, column, set.

2. Your formatting is.. interesting! It's not bad, it's just not how one usually thinks in Java. I can understand what you wrote, but I can tell you are thinking in a different language.

I pasted your code to Eclipse and did auto-format (Ctrl-Shift-F), and here is the result:

    public static void main(String[] args) {

        int list[][][] = new int[3][5][3]; // create rows, column, units
                                            // (buildings) array structure.
        int i, j, k; // assign variables for row, column and unit (building).
        int ctr = 0; // set counter.

        // create array
        for (i = 0; i < 3; i++)
            for (j = 0; j < 5; j++)
                for (k = 0; k < 3; k++)

                {
                    list[i][j][k] = ctr++;
                }

        for (i = 0; i < 3; i++)
            for (j = 0; j < 5; j++)
                for (k = 0; k < 3; k++)

                // Format array

                {
                    System.out.println(list[i][j][k] + " ");
                }
    }

I am not trying to nit-pick, but this is a necessary step in the right direction, before you can add a bit more complexity to this code. Also, your professor probably expects a similar format.

1. As you probably know, println adds a newline, while print does not. So the first step would be to use print, not println, in the most general case; and use println only when you actually need to move to a new line. Since you asked for just a hint, I'll leave it at that. Good luck!

First, some indentation:

public static void main(String[] args) {

    int list[][][] = new int [3][5][3]; //create rows, column, units (buildings) array structure.
    int i,j,k; //assign variables for row, column and unit (building).
    int ctr = 0; //set counter.

    //create array
    for (i=0; i<3; i++) {
        for (j=0; j<5; j++) {
            for (k=0; k<3; k++) {
                list[i][j][k] = ctr++;
            }
        }
    }


    for (i=0; i<3; i++) {
        for (j=0; j<5; j++) {
            for (k=0; k<3; k++) {
                //Format array
                System.out.println(list[i][j][k] + " ");
            }
        }
    }
}

Please try to structure your code like this, it's easier to read.

Consider what happens in the last set of loops. You want to print a newline after every row, so perhaps you will need to add further print calls outside of the inner loop ... you need a newline after printing a row. It's easy, just read this carefully.