// Matrix.java
public class Matrix extends Object
{
   private int sequenceNumber, rows, cols;
   private int[][] array;

   public Matrix(int _sequenceNumber, int _rows, int _cols, int[] _array)
   {
      sequenceNumber = _sequenceNumber;
      rows = _rows;
      cols = _cols;
      array = new int[rows][cols];
      int cur = 0;
      for(int r = 0; r < rows; r++)
         for(int c = 0; c < cols; c++)
         {
            array[r][c] = _array[cur];
            cur++;
         }
   }

   public Matrix(int _sequenceNumber, int _rows, int _cols, int[][] _array)
   {
      sequenceNumber = _sequenceNumber;
      rows = _rows;
      cols = _cols;
      array = new int[rows][cols];
      for(int r = 0; r < rows; r++)
         for(int c = 0; c < cols; c++)
            array[r][c] = _array[r][c];
   }

   public Matrix(int _sequenceNumber, int _rows, int _cols)
   {
      sequenceNumber = _sequenceNumber;
      rows = _rows;
      cols = _cols;
      array = new int[rows][cols];
   }

   public int getRows()
   {
      return rows;
   }

   public int getCols()
   {
      return cols;
   }

   public int[][] getArray()
   {
      return array;
   }

   public int getSequenceNumber()
   {
      return sequenceNumber;
   }

   public String toString()
   {
      StringBuffer sb = new StringBuffer(
         "sequence number: " + sequenceNumber + "\n" +
         "rows: " + rows + "\n" +
         "cols: " + cols + "\n" +
         "matrix: " + "\n");
      for(int r = 0; r < rows; r++)
      {
         for(int c = 0; c < cols; c++)
            sb.append(array[r][c] + "\t");
         sb.append("\n");
      }
      return sb.toString();
   }

}