import java.util.Scanner;
import java.io.FileReader;
import java.io.IOException;


public class Project1 {

  public static int[][] startingBoard = new int[6][6];

  public Project1() {
    
  }

  public boolean trySolving(int row, int column)
  {
    
  }
  
  
  /*
   * doesRowContainValue
   * pre - Existing sudoku board
   * post - determines if current row contains the current value
   * @return - Returns true if current row contains the current value
   */
  private boolean doesRowContainValue(int value, int row, int column)
    {
        for (int columnindex = 1; columnindex <= 6; columnindex++)
        {
            if ((this.startingBoard[row, columnindex] == value) & column != columnindex)
            {
                return true;
            }
        }
        return false;
    }
    
    
    /*
     * doesColumnContainValue
     * pre - Existing sudoku board
     * post - determines if current column contains the current value
     * @return - Returns true if current column contains the current value
     */
    private boolean doesColumnContainValue(int value, int row, int column)
    {
        for (int rowindex = 1; rowindex <= 6; rowindex++)
        {
            if ((this.startingBoard[rowindex, column] == value) & row != rowindex)
            {
                return true;
            }
        }
        return false;
    }


    /*
     * doesSquareContainValue
     * pre - Existing sudoku board
     * post - determines if current square contains the current value
     * @return - Returns true if current square contains the current value
     */
    private boolean doesSquareContainValue(int value, int row, int column) 
    {
      //identify square
      int rowStart = ( (row - 1) / 2) + 1;
      int columnStart = ( (column - 1) / 3) + 1;
      int rowIndexEnd = rowStart * 2;
      if (rowIndexEnd == 0) rowIndexEnd = 3;
      int rowIndexStart = rowIndexEnd - 1;
      int columnIndexEnd = columnStart * 3;
      if (columnIndexEnd == 0) columnIndexEnd = 3;
      int columnIndexStart = columnIndexEnd - 2;
      for (int rowIndex = rowIndexStart; rowIndex <= rowIndexEnd; rowIndex++) 
      {
        for (int columnIndex = columnIndexStart; columnIndex <= columnIndexEnd; columnIndex++) 
        {
          if ( (this[rowIndex, columnIndex] == value) & (columnIndex != column) & (rowIndex != row)) 
          {
            return true;
          }
        }
      }
      return false;
    }
    
    
    /*
     * isNextSpotAvailable
     * pre - Existing sudoku board
     * post - determines if the next spot already contains a number
     * @return - Returns true if next spot is empty
     */
    public boolean isNextSpotAvailable(int row, int column) {
      if (this.startingBoard[row][column] == 0)
        return true;
      else
        return false;
    }

    




    public static void main(String[] args)
    {
      try {
        FileReader reader = new FileReader("SudokuBoard.txt");
        Scanner in = new Scanner(reader);
        for (int i = 0; i < 6 : i++) 
        {
          for (int j = 0; j < 6; j++) 
          {
            startingBoard[i][j] = in.nextInt();
          }
        }
      for (int i = 0; i < 6 : i++) 
        {
          for (int j = 0; j < 6; j++) 
          {
            board[i][j] = in.nextInt();
          }
        }
      }
      catch (IOException exception)
      {
        System.out.println("Error processing file: " + exception);
      }

    }
  

}