二维数组有助于使用java

我很难在java程序中实现这一点。有什么建议吗？ Q：将除最后一行和最后一列之外的所有元素初始化为随机生成的0或1 我们必须把它放在魔术课上

/**
 * Service class with supporting methods for Magic Trick
 *
 * 
 * @version 4/7/14
 */

import java.util.*;
import java.text.*;

public class MagicTrick
{
  private int[][] grid;
  private int flippedRow;
  private int flippedCol;
  public static final int GRID_SIZE = 6;
  //int [][] matrix = new int[flippedRow][flippedCol];

  //Random rand = new Random();
  /**
   * default constructor,
   * sets elements in the grid to randomly generated either 0 or 1
   * calls setParity method
   */
  public MagicTrick()
  {
    this.grid = new int [GRID_SIZE][GRID_SIZE];
    for ( int r = 0; r < this.grid.length - 1; r++ )
    {
      for ( int c = 0; c < this.grid [r].length - 1; c++ )
      {

          boolean [][] matrix = new boolean[r][c];
          Random rand = new Random();
          for( int i = 0; i < 5; i++ )
          for ( int j = 0; j < 5; j++ )
          matrix[r][c] = rand.nextBoolean();
          return matrix[][];
          //nextBoolean = true;
        //{
        //Need to add nextBoolean and make a boolean statement first in order to continue
        //}
        this.grid[r][c] = 1;
      }

      //if( c < this.grid[r].length)
      //{
      //  return c;
      //}
    }
    setParity();
    // see Lab9a Notes

  }

  /**
   * sets elements in the last row and the last column
   * to either 1 or 0, so the sum of the elements in the appropriate row and column is even
   *
   */
  public void setParity()
  {

    //for(int r = 0; r; r++)
    //{
    // for(int c = 0; c; c++)
    //{

    //}
    // }
    // See Lab9a Notes



  }

  /**
   * flips the value of the randomly
   * selected element
   */
  public void flipOneElement()
  {

    // See Lab9a Notes

  }

  /**
   * accessor method
   * @return  the value of the row of the flipped element: this.flippedRow
   */
  public int getFlippedRow()
  {
    return flippedRow;
  }

  /**
   * accessor method
   * @return  the value of the column of the flipped element: this.flippedCol
   */
  public int getFlippedColumn()
  {

    return flippedCol;
  }

  /**
   * toString method returns printable version
   * of the content of this.grid
   */
  public String toString()
  {
    String returnValue = "";
    for (int r = 0; r < GRID_SIZE; r++)
    {
      for (int c = 0; c < GRID_SIZE; c++)
      {
        returnValue += this.grid[r][c] + " ";
      }
      returnValue += "\n";
    }
    return returnValue += "\n";
  }


  /**
   * scheck the users guess
   * 
   * @param r - the row selected by the user
   * @param c - the column selected by the user
   * @return - true if the guessed row and column are the same
   *                as the row and column of the flipped element
   */
  public boolean checkGuess(int r, int c)
  {
    return false;  // THIS IS A STUB
  }
}

/**
*具有魔术支持方法的服务类
*
* 
*@version 4/7/14
*/
导入java.util.*；
导入java.text.*；
公共级MagicTrick
{
私有int[][]网格；
私有int flippedRow；
私有int-flippedCol；
公共静态最终整数网格大小=6；
//int[][]矩阵=新int[flippedRow][flippedCol]；
//Random rand=新的Random（）；
/**
*默认构造函数，
*将网格中的元素设置为随机生成0或1
*调用setParity方法
*/
公共MagicTrick（）
{
this.grid=newint[grid_SIZE][grid_SIZE]；
for（int r=0；r

public MagicTrick（）
{
//见Lab9a注释
this.grid=newint[grid_SIZE][grid_SIZE]；
随机通配符=新随机（）；
int start=0，end=2；
for（int r=0；rBe特定且明确。问题是什么？这不是HomeWorkoverFlow为什么要创建两个数组？在for循环外构造网格（好），然后在for循环内构造矩阵（坏）.我正在尝试让我的5x5矩阵完全随机化0和1我不知道如何使用布尔语句我不确定我是否正确地这样做，如何才能让它完美地工作布尔[][]矩阵=新布尔[r][c]；随机兰德=新随机（）；for（int I=0；I<5；I++）for（int j=0；j<5；j++）矩阵[r][c]=rand.nextBoolean（）；返回矩阵[]；
public MagicTrick()
{
  // see Lab9a Notes
    this.grid = new int [GRID_SIZE] [GRID_SIZE];

    Random wildCard = new Random();
    int start=0, end=2;
    for(int r=0; r<this.grid.length; r++)
    {
        for (int c=0; c<this.grid[r].length; c++)
        {
            this.grid[r][c]=wildCard.nextInt(end-start);
        }
    }
    setParity();

}