import java.util.Scanner;
/** A class whose instances represent fully or partially filled
  * Sudoku boards.  The board cells are implemented by the elements
  * of a publically accessible two dimensional Java array named board
  * of ints.

  */
public class Sudoku {
  /**
   * Within this two dimensional array that stores the contents of
   * the board's cells:
   * The first subscript locates which COLUMN contains the element.
   * So, it is like an x coordinate.
   * The the second subscript locates which ROW contains the element.
   * So, it is like a y coordinate.
   * field board
   */
  public int board[][];
  /**
   * Constructor to build an "empty" board.
   * "Empty" or "blank" cells are represented by 0s.
   */
  public Sudoku()
  {
    board = new int[9][9];
  }
  /**
   * Method to translate the board contents into a printable String.
   * When the returned String is printed, the board is shown with
   * extra spaces separating the 3x3 blocks, for example,  <br/>
   * 1 2 3 &nbsp; 4 5 6 &nbsp; 7 8 9 <br/>
   * 1 2 3 &nbsp; 4 5 6 &nbsp; 7 8 9 <br/>
   * 1 2 3 &nbsp; 4 5 6 &nbsp; 7 8 9 <br/>
   *                     <br/>
   * 1 2 3 &nbsp; 4 5 6 &nbsp; 7 8 9 <br/>
   * 1 2 3 &nbsp; 4 5 6 &nbsp; 7 8 9 <br/>
   * 1 2 3 &nbsp; 4 5 6 &nbsp; 7 8 9 <br/>
   *                     <br/>
   * 1 2 3 &nbsp; 4 5 6 &nbsp; 7 8 9 <br/>
   * 1 2 3 &nbsp; 4 5 6 &nbsp; 7 8 9 <br/>
   * 1 2 3 &nbsp; 4 5 6 &nbsp; 7 8 9 <br/>
   *
   * Note:  The Java API provides that when System.out.print
   * or System.out.println is called ON a Sudoku object, the
   * toString method is called and the String so returned is printed.
   * @return The Sudoku board contents in string form.
   */
  public String toString()
  {
    String result = "";
    for( int rowOfBlocks = 0; rowOfBlocks < 3; rowOfBlocks = rowOfBlocks + 1 )
    {
      for( int rowInABlock = 0; rowInABlock < 3; rowInABlock = rowInABlock + 1 )
      {
        for( int colOfBlocks = 0; colOfBlocks < 3; colOfBlocks = colOfBlocks + 1 )
        {
          for( int colInABlock = 0; colInABlock < 3; colInABlock = colInABlock + 1 )
          {
            result = result + board[colOfBlocks*3 + colInABlock][rowOfBlocks*3 + rowInABlock] + " ";
          }
          result = result + " ";
        }
        result = result + "\n";
      }
      result = result + "\n";
    }
    return result;
  }
  /**
   * Method to read 81 ints that should each be in the 1-9
   * range and store them into this Sudoko board.
   * Note: The method will operate correctly to read data that
   * had been returned by our toString() method.
   *
   * @param scParam The Scanner object to use for reading.
   */
  public void read( Scanner scParam )
  {
    for( int rowOfBlocks = 0; rowOfBlocks < 3; rowOfBlocks = rowOfBlocks + 1 )
    {
      for( int rowInABlock = 0; rowInABlock < 3; rowInABlock = rowInABlock + 1 )
      {
        for( int colOfBlocks = 0; colOfBlocks < 3; colOfBlocks = colOfBlocks + 1 )
        {
          for( int colInABlock = 0; colInABlock < 3; colInABlock = colInABlock + 1 )
          {
            board[colOfBlocks*3 + colInABlock][rowOfBlocks*3 + rowInABlock] = scParam.nextInt();
          }
        }
      }
      return ;
    }

  }
  public static void main(String[]a)
  {
    System.out.println("Sudoku should not be run as an app.");
  }
}