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Converting int grid to string (Java)

 
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badgerking

Joined: 02 Apr 2009
Posts: 8
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PostPosted: Thu Apr 02, 2009 12:43 pm    Post subject: Converting int grid to string (Java) Reply with quote
Hi there, I am working on a sudoku program at the moment in Java.
At the moment I have been able to print a grid to the the output window (System.out...), solve the grid by brute force and then clear the grid (all in the output window).

I am now trying to transfer the grid into a GUI. The grid is represented as such


Code:

   static int[][] grida =             
    {
        {0, 1, 5, 4, 0, 0, 0, 0, 0},
        {0, 7, 0, 0, 3, 8, 0, 5, 2},
        {0, 0, 8, 0, 5, 0, 1, 0, 7},
        {0, 9, 0, 0, 0, 0, 0, 0, 4},
        {0, 8, 2, 0, 0, 0, 3, 1, 0},
        {6, 0, 0, 0, 0, 0, 0, 2, 0},
        {1, 0, 4, 0, 9, 0, 6, 0, 0},
        {2, 3, 0, 8, 6, 0, 0, 7, 0},
        {0, 0, 0, 0, 0, 3, 2, 9, 0},
    };



I have been able to display a grid in GUI but it has read it from a string. Is there a way I can convert this int[][] grida into a string.

Any help and thoughts I would be extremely grateful.
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Pete

Joined: 09 Jun 2008
Posts: 18
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Location: Somerset, NJ

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PostPosted: Thu Apr 02, 2009 3:44 pm    Post subject: Reply with quote
If you just want a quick and easy conversion, you might try
Code:
Arrays.deepToString(grida)

If you're looking for any kind of fancy formatting of the string, you'll probably have to do it yourself.

Pete

Last edited by Pete on Fri Apr 03, 2009 2:22 am; edited 1 time in total
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badgerking

Joined: 02 Apr 2009
Posts: 8
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PostPosted: Thu Apr 02, 2009 4:16 pm    Post subject: Reply with quote
Cheers for the advice Pete tried it out by printing the string out in the output but just came up as gobble-di-goop.

I have this method for reading a string

Code:

   
    public void initializeFromString(final String boardStr) {
       
        //clear();  // Clear all values from the board.
       
        int emptycells = 0; // parameter used to count the umber of empty cells
        row = 0;
        col = 0;
       
        for (int i = 0; i <boardStr>= '1' && c <='9') {
                if (row > 9 || col > 9) {
                    throw new IllegalArgumentException("SudokuModel: "
                            + " Attempt to initialize outside 1-9 "
                            + " at row " + (row+1) + " and col " + (col+1));
                }
                grid[row][col] = c - '0';  // Translate digit to int.
                col++;
            }
            else if (c == '.')
            {
                getVal(row,col);
                col++;
       
            }
            else if (c == '/') {
                row++;
                col = 0;
            }
            else if (c == ','){
                col++;
                emptycells++;
            }
            else
            {
                throw new IllegalArgumentException("SudokuModel: Character '" + c
                        + "' not allowed in board specification");
            }
           
        }
        System.out.printf("number of cells left = " + emptycells ); // prints out how mnay cells are empty
    }


is there a way i could modify this to read grida once converted into a string?Any help greatly appreciated.
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badgerking

Joined: 02 Apr 2009
Posts: 8
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PostPosted: Thu Apr 02, 2009 4:33 pm    Post subject: Reply with quote
just to clear up the initaliseString reads this

[code]
private static final String INITIAL_BOARD=

"..,....../" + "......,../" + "..,..,.../" + "...,.,.../" +
".....,,../" + ".,...,.../" + "...,..,../" + "..,.,.,../" +
"..,.,,.../";
[code]

this appears currently in GUI class

i want the initaliseString to read grida (see above) but that is an array of an array of int. therefore it needs to be converted[/code]
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Pete

Joined: 09 Jun 2008
Posts: 18
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Location: Somerset, NJ

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PostPosted: Sun Apr 05, 2009 1:51 pm    Post subject: Reply with quote
The string produced by
Code:
Arrays.deepToString(grida)

is hardly what I would call "gobble-di-goop." Let's take a closer look.

Here's the string:
Code:
[[0, 1, 5, 4, 0, 0, 0, 0, 0], [0, 7, 0, 0, 3, 8, 0, 5, 2], [0, 0, 8, 0, 5, 0, 1, 0, 7], [0, 9, 0, 0, 0, 0, 0, 0, 4], [0, 8, 2, 0, 0, 0, 3, 1, 0], [6, 0, 0, 0, 0, 0, 0, 2, 0], [1, 0, 4, 0, 9, 0, 6, 0, 0], [2, 3, 0, 8, 6, 0, 0, 7, 0], [0, 0, 0, 0, 0, 3, 2, 9, 0]]


It may not look like much at first. However, let's replace the commas with newlines. With a tiny bit of formatting, we can see your original integer array in a more useful format. (There are several ways to do this.) Here's what we get:

Code:
[[0, 1, 5, 4, 0, 0, 0, 0, 0]
 [0, 7, 0, 0, 3, 8, 0, 5, 2]
 [0, 0, 8, 0, 5, 0, 1, 0, 7]
 [0, 9, 0, 0, 0, 0, 0, 0, 4]
 [0, 8, 2, 0, 0, 0, 3, 1, 0]
 [6, 0, 0, 0, 0, 0, 0, 2, 0]
 [1, 0, 4, 0, 9, 0, 6, 0, 0],
 [2, 3, 0, 8, 6, 0, 0, 7, 0]
 [0, 0, 0, 0, 0, 3, 2, 9, 0]]


Is this what you're trying to do?

Pete
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badgerking

Joined: 02 Apr 2009
Posts: 8
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PostPosted: Sun Apr 05, 2009 3:04 pm    Post subject: Reply with quote
Thanks for the help pete.

I managed to get to convert the grid into a string but now, like you said, i need to format the string so it can be read and then displayed in the GUI.

MMy GUI can display a string but the string is defined in the GUI class. So it doesn't display the actual grid.
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