Tic Tac Toe Java抽獎游戲

Question

所以我在課堂上做了井字游戲作業。 我已經成功創建了一個簡單的Tic Tac Toe程序，但有時以某種方式無法檢查抽簽的方法是否正確。 如果一切都滿了，但是沒有贏家，那就平局了。 但是，如果除第0行第1列以外的所有內容都已填充，即使該框仍為空白，它仍將顯示“繪制”。 如果您不明白我的意思，請嘗試填寫除第一行中的中間框之外的所有內容，但不贏，即使最后一個框沒有填充，它也會顯示“ draw”。 我在代碼中做錯了什么？？？？ 這是驅動程序：import javax.swing.JOptionPane;

public class TwoDimensionalArray_Driverr
{
  public static void main(String[]args)
  {
    char player = 'o';
    TwoDimensionalArrayy game = new TwoDimensionalArrayy();

    while (game.checkGame() == "PLAY")
    {
      if (player == 'o') player = 'x';
      else player = 'o';
      System.out.println(game);
      String input = JOptionPane.showInputDialog("Enter Position of Row for player "+ player +" or     press Cancel to exit");
      if (input == null)
        System.exit(0);
      int row = Integer.parseInt(input);

      input = JOptionPane.showInputDialog("Enter Position of Column for player " + player);
      int column = Integer.parseInt(input);

      game.set(row,column,player);
      game.isDraw();
      game.hasWon(row,column,player);
      game.checkGame();
      System.out.println(game.checkGame());
    }
    if (game.checkGame()=="DRAW"){
      System.out.println(game);
      System.out.println("It's a draw.");
    }
    else {
      System.out.println(game);
      System.out.println(player + " has won.");}
  }
}

這是對象：公共類TwoDimensionalArrayy {private String currentState =“ GO”; 私人字符[] []董事會； 私有靜態最終int ROWS = 3; private static final int COLUMNS = 3;

  public TwoDimensionalArrayy(){
  board = new char[ROWS][COLUMNS];

  for(int i=0;i<ROWS;i++) //always do ROWS first!!!!
    for(int j = 0;j<COLUMNS;j++)
    board[i][j]=' ';
  }

  public void set(int i, int j, char player)
  {
    if(board[i][j] != ' ' )
      throw new IllegalArgumentException("Position Occupied");
    board[i][j] = player;
  }

  public String toString()
  {
    System.out.println("This is the board. 3x3");
    System.out.println("Position start @ row[0]col[0],row[0]col[1],row[0]col[2]");
    String dString= "";
    for (int row = 0; row<ROWS; row++)
    {
      if (COLUMNS>0)
      dString += board[row][0];
      for (int col = 1; col<COLUMNS; col++)
      {
        dString+= "|" + board[row][col];
      } //end 2nd for
      dString += "\n";
    }//end first for
    return dString;
  }

  public String checkGame(){
    if (currentState=="Win"){
      return "END";}
    else if (currentState=="Draw"){
      return "DRAW";}
    else return "PLAY";
  }
  public void hasWon(int i,int j,char player){
    if (board[i][0] == player         // 3-in-the-row
                   && board[i][1] == player
                   && board[i][2] == player
              || board[0][j] == player      // 3-in-the-column
                   && board[1][j] == player
                   && board[2][j] == player
              || i == j            // 3-in-the-diagonal
                   && board[0][0] == player
                   && board[1][1] == player
                   && board[2][2] == player
              || i + j == 2  // 3-in-the-opposite-diagonal
                   && board[0][2] == player
                   && board[1][1] == player
                   && board[2][0] == player)
      currentState = "Win";
  }
  public void isDraw(){
     for ( int row = 0; row < ROWS; row++) {
         for (int col = 0; col < COLUMNS; col++) {
            if (board[row][col] == ' ') {
               currentState = "Play";
               break;
            }
            else {currentState = "Draw";} // no empty cell, it's a draw}
         }
      }
   }
}

Answer 1

public void isDraw(){
  for ( int row = 0; row < ROWS; row++) {
    for (int col = 0; col < COLUMNS; col++) {
      if (board[row][col] == ' ') {
        currentState = "Play";
        break;
      } else {
        currentState = "Draw"; // no empty cell, it's a draw
      } 
    }
  }
}

此處的break將逃避內部的for循環，而不逃避外部的for循環。 本質上， isDraw僅考慮最后一行。 您應該嘗試使用return代替。