CODEWITHSUNDEEP
javaarraysfor-loop
Curstin Visagie
Curstin Visagie

Reputation: 23

Integer with nested for loops in a 3-dimentional array

Here is the question :

Within the main method, create a 10x10x10 three dimensional array.

By making the use of nested for loops, store the value of the sum of each of its coordinate positions.

For example: position (3,4,8) = 3 + 4 + 5 = 15

Here is my code :

import java.util.Arrays;

public class threedim
{

    public static void main(String args[])
    {

   int threeD[][][] = new int[10][10][10];    
   int i, j, k = 0;


        for(i=0; i<10; i++)
            for(j=0; j<10; j++) {
                threeD[i][j] = k;
                k++;
        }


        for(i=0; i<10; i++) {
            for(j=0; j<10; j++)
                System.out.print(threeD[i][j] + " ");
           System.out.println();
        }
      System.out.println();

   }

}

I receive an incompatible types: int cannot be converted to int[] error, can anyone help me ?

Thank you in advance :)

Upvotes: 0

Views: 127

Answers (2)

SanyaSh
SanyaSh

Reputation: 1

Your problem is caused by the following line:

threeD[i][j] = k;

threeD[i][j] refers to the third dimension of your array. The third dimension of you array is a simple array.

So, to set/add k to this array, you should specify concrete index.

threeD[i][j][z] = k;

where z is another index.

Btw, in this particular example, you can use your k as "z":

threeD[i][j][k] = k;

Upvotes: 0

C. L.
C. L.

Reputation: 571

Since you have a three dimensional array, you need three nested loops:

int h, i, j, k = 0;

for (h=0; h<10; h++) 
    for(i=0; i<10; i++)
        for(j=0; j<10; j++) {
            threeD[h][i][j] = k; // Is that really, what you want to do?
            // threeD[h][i][j] = h + i + j; seems to be the right thing to do according to your explanation
            k++;
        }

for (h=0; h<10; h++) 
    for(i=0; i<10; i++) {
        for(j=0; j<10; j++)
            System.out.print(threeD[h][i][j] + " ");
       System.out.println();
    }

Upvotes: 2

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