Question

I’m trying to create a program for homework that displays a Tic-Tac-Toe board, and when the user clicks the button it displays a random number in all of the boxes. The number 1 = "X" and 0 = "O". I created 9 labels labeled "label1, label2…etc". Once the labels are full, I need to display who won, the letter X or O. I’m using arrays for this but am kinda of lost at this point. what do I need to do to display the random numbers into the labels. Here is the code I’ve written for the click event handler so far.

Random rand = new Random(2);
int click;

click = rand.Next(2);
const int ROWS = 3;
const int COLS = 3;

int[,] letters = new int[ROWS,COLS];

int ROW = ROWS;
int COL = COLS;
for (int row = 0; row < ROWS; ROW ++) {
  for (int col = 0; col < COLS; COL ++) {
    letters[row, col] = rand.Next(2);
    int X = 1;//???
    int O = 0;//???
    label1.Text = [ROW,COL].ToString();//???
  }
}

Answer 1

Here an attempt at an explanation:

first, you have the data to represent your problem:

const int ROWCOUNT = 3;
const int COLCOUNT = 3;
private int[,] letters = new int[ROWCOUNT,COLCOUNT];
Random rand = new Random(DateTime.Now.Ticks);

then you want to randomly fill that data:

private void randomize()
{
    for( int row = 0; row < ROWCOUNT; row++ ){ //start with row=0, do row=row+1 until row no longer < ROWCOUNT
      for( int col = 0; col < COLCOUNT; col++ ){
         letters[row,col] = rand.nextInt(2);
      }
    }
}

finally, you want to display the array somewhere (in your case labels):

//These need to be added to a GridLayoutManager
private JLabel[,] labels = new JLabel[ROWCOUNT,COLCOUNT];

private void updateView(){
    for( int row = 0; row < ROWCOUNT; row++ ){ //start with row=0, do row=row+1 until row no longer < ROWCOUNT
      for( int col = 0; col < COLCOUNT; col++ ){
         var current = letters[row,col];
         var labelText = "O";
         if( current > 0 ) 
            labelText = "X";
         labels[row,col].Text = labelText;
      }
    }
}

so, when the user clicks the button, you call:

randomize();
updateView();

hope it helps

from your comments, it seems setting the Label Text needs more explanation:

     var labelText = "O";
     if( current > 0 ) 
        labelText = "X";
     labels[row,col].Text = labelText;

maybe, i should have written it more like this:

     String textForLabel = "O"; //0 represents O, 1 represents X
     //test to see, if it really is a 0, not a 1
     if( current != 0 ){
        //oh, it is not a zero, therefore, set 
        textForLabel = "X";
     }
     JLabel labelAtRowAndCol = labels[row,col];
     labelAtRowAndCol.Text = textForLabel;