Need help about scripting coordinates

Unity Engine
1

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6947825--817145--upload_2021-3-18_10-11-39.png

Hello, im working with rotate and match hexagon game. Need to idea for multiple selections.
I add every single gameobjects(hexes) in gameobject array like gameobject[,] so i have coordinates of them.
Game should be when you click one hex its need to be clicked 3 hexes like secend image.

This is my solution need to add some controls for -1x and -1y. Its look like noobish. Can i do something diffrent? Thanks.

void findArroundPos(int x, int y){
        List<int[,]> arroundPoss = new List<int[,]>();
           
           
            arroundPoss.Add(new int[x,y]);

            arroundPoss.Add(new int[x+1,y]);
            arroundPoss.Add(new int[x+1,y-1]);   
            arroundPoss.Add(new int[x+1,y+1]);

            arroundPoss.Add(new int[x-1,y]);
            arroundPoss.Add(new int[x-1,y-1]);   
            arroundPoss.Add(new int[x-1,y+1]);

            arroundPoss.Add(new int[x,y+1]);  
            arroundPoss.Add(new int[x,y-1]);
       
    }
2

You could slightly simplify that code using a couple of loops, although with only 9 lines it doesn’t matter much.

for (int i = x-1; i <= x+1; ++i)
{
    for (int j = y-1; j <= y+1; ++j)
    {
        aroundPos.Add(new int[i, y]);
    }
}

(I am assuming that the order of elements in the list isn’t important. If you need to keep exactly the order shown in your original code, then it probably can’t be simplified.)

3

Ignore its elegance, does this code actually work ?

You’re adding empty arrays of different sizes into a list, i’m having a hard time seeing what it is for.
Shouldn’t you store the coordinates instead of empty arrays ?