Home/ Questions/Q 3637456
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-19T01:09:38+00:00

I’m running into problems trying to assign a 2d array to a 3d array,

  • 0

I’m running into problems trying to assign a 2d array to a 3d array, so I thought i’d ask a question about 3d and 2d arrays.

Say I have a masterArray[][][] and wanted to put childArray1[][] and childArray2[][] into it.
This is how I have done it and was wondering if that is the correct way of applying it:

private int[][][] masterArray;
private int[][] childArray1 = {
        {1, 1, 1, 1, 1, 1, 1, 1, 1, 1},
        {1, 1, 1, 0, 0, 1, 0, 1, 1, 1},
        {1, 1, 1, 1, 1, 1, 1, 1, 1, 1},
        {1, 0, 1, 1, 1, 1, 1, 1, 0, 1},
        {1, 0, 1, 1, 1, 1, 0, 1, 0, 1},
        {1, 0, 1, 1, 0, 1, 0, 1, 0, 1},
        {1, 0, 1, 1, 0, 1, 1, 1, 0, 1},
        {1, 0, 1, 1, 1, 1, 1, 1, 0, 1},
        {1, 0, 1, 1, 0, 1, 1, 1, 0, 1},
        {1, 0, 1, 1, 0, 1, 8, 1, 0, 1},
        {1, 0, 7, 1, 1, 1, 0, 1, 0, 1},
        {1, 0, 1, 1, 1, 1, 0, 1, 0, 1},
        {1, 0, 1, 1, 1, 1, 1, 1, 0, 1},
        {1, 0, 0, 0, 0, 0, 0, 9, 0, 1},
        {1, 1, 1, 1, 1, 1, 1, 1, 1, 1}
};
private int[][] childArray2 = {
        {1, 1, 1, 1, 1, 1, 1, 1, 1, 1},
        {1, 1, 1, 1, 1, 1, 1, 1, 1, 1},
        {1, 1, 1, 1, 1, 1, 1, 1, 1, 1},
        {1, 1, 1, 1, 1, 1, 1, 1, 1, 1},
        {1, 1, 1, 1, 1, 1, 1, 1, 1, 1},
        {1, 1, 1, 1, 1, 1, 1, 1, 1, 1},
        {0, 0, 0, 0, 0, 0, 0, 0, 1, 1},
        {1, 1, 1, 1, 7, 1, 1, 1, 1, 1},
        {1, 1, 1, 1, 1, 1, 1, 1, 1, 1},
        {1, 1, 1, 1, 0, 1, 1, 1, 1, 1},
        {1, 1, 1, 1, 0, 0, 0, 1, 1, 1},
        {1, 1, 1, 9, 1, 1, 8, 0, 1, 1},
        {1, 1, 1, 1, 1, 1, 1, 1, 1, 1},
        {1, 1, 1, 1, 1, 1, 1, 1, 1, 1},
        {1, 1, 1, 1, 1, 1, 1, 1, 1, 1},
};

Ok, so in my init method I use these some methods to set the child arrays into the master array. What I was curious about was how this exactly works. I assumed the following:

    masterLevel = new int[MAX_LEVELS][MAP_WIDTH][MAP_HEIGHT];
    for (int x = 0; x < MAP_WIDTH; x++) {
        for (int y = 0; y < MAP_HEIGHT; y++) {
            masterArray[currentLevel][x][y] = childArray1[x][y];
        }
    }

Would that work?
In my application things aren’t working so I picking out code that I am not 100% sure on.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    It doesn’t really matter how you organize a 3d array as long as you put things in the same way as you take them out.

    From your comment on another answer it seems that you are having problem with element order ([currentLevel][x][y] = childArray[y][x];)

    It seems you mixed MAP_HEIGHT and MAP_WIDTH. It should be:

    masterLevel = new int[MAX_LEVELS][MAP_HEIGHT][MAP_WIDTH];

    then you can use:

    master[currentLevel][x][y] = childArray[x][y];
    • 0