井字游戏循环在平局时停止 - Java
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【中文标题】井字游戏循环在平局时停止 - Java【英文标题】：Tic tac toe game loop stops when it is a draw - Java 【发布时间】：2021-05-23 11:28:24 【问题描述】：根据我的学习平台的要求，除了输入命令是“start easy easy”，结果是draw程序没有停止，之后什么也没有发生，我不得不强制结束程序。在所有其他情况下，除非用户键入“退出”，否则程序将继续运行。请提供帮助，如果您能建议如何改进我的代码以及在 OOP 方面，那将会很棒。谢谢。
import java.util.Arrays;
import java.util.Scanner;
import java.util.Random;
public class Main
public final static Scanner scan = new Scanner(System.in);
public static Random random = new Random();
public static char[][] gameBoard;
public static String level = "";
public static void main(String[] args)
// write your code here
menu();
public static String[] getParams()
String[] params = scan.nextLine().split(" ");
return params;
public static void menu()
while (true)
System.out.println("Input command: ");
String[] params = getParams();
if (params.length == 3)
if ("start".equals(params[0]))
level = params[1].equals("easy") ? params[1] : params[2];
start(params[1], params[2]);
continue;
else if (params.length == 1)
if ("exit".equals(params[0]))
break;
else
System.out.println("Bad parameters!");
continue;
else
System.out.println("Bad parameters!");
continue;
break;
public static void start(String str1, String str2)
gameBoard = to2dArray("_________");
drawBoard(gameBoard);
char player1 = 'X';
char player2 = 'O';
if ("user".equals(str1))
while (!gameFinished(gameBoard))
drawBoard(playerMove(gameBoard, player1));
gameState(gameBoard);
drawBoard(computerMove(gameBoard, player2));
gameState(gameBoard);
else if ("user".equals(str2))
while (!gameFinished(gameBoard))
gameState(computerMove(gameBoard, player2));
drawBoard(gameBoard);
gameState(playerMove(gameBoard, player1));
drawBoard(gameBoard);
else if ("user".equals(str1) && "user".equals(str2))
while (!gameFinished(gameBoard))
drawBoard(playerMove(gameBoard, player1));
gameState(gameBoard);
drawBoard(playerMove(gameBoard, player2));
gameState(gameBoard);
else
while (!gameFinished(gameBoard))
drawBoard(computerMove(gameBoard, player1));
gameState(gameBoard);
drawBoard(computerMove(gameBoard, player2));
gameState(gameBoard);
//startGame method
public static int[] getRandomNumber()
int[] computerCoords = new int[2];
while (true)
int a = random.nextInt((3 - 1) + 1) + 1;
int b = random.nextInt((3 - 1) + 1) + 1;
if (gameBoard[a - 1][b - 1] == 'X' || gameBoard[a - 1][b - 1] == 'O')
continue;
else
computerCoords[0] = a;
computerCoords[1] = b;
break;
return computerCoords;
public static char[][] computerMove(char[][] gameBoard, char computer)
int[] arr = getRandomNumber();
int row = arr[0] - 1;
int col = arr[1] - 1;
if (!gameFinished(gameBoard))
System.out.println("Making move level \"" + level + "\"");
gameBoard[row][col] = computer;
return gameBoard;
public static char[][] playerMove(char[][] gameBoard, char player)
int index = 0;
int row, column;
while (true)
System.out.println("Enter the coordinates: ");
String[] coordinates = scan.nextLine().split(" ");
try
row = Integer.parseInt(coordinates[0]);
column = Integer.parseInt(coordinates[1]);
if ((row < 1 || column < 1) || (row > 3 || column > 3))
System.out.println("Coordinates should be from 1 to 3!");
continue;
row -= 1;
column -= 1;
if (gameBoard[row][column] != '_')
System.out.println("This cell is occupied! Choose another one!");
continue;
gameBoard[row][column] = player;
return gameBoard;
catch (NumberFormatException e)
System.out.println("You should enter numbers!");
continue;
//while loop ends here
// playerMove() ends
public static char[][] to2dArray(String s)
char[][] twoDArray = new char[3][3];
int index = 0;
for (int i = 0; i < twoDArray.length; i++)
for (int j = 0; j < twoDArray[i].length; j++)
twoDArray[i][j] = s.charAt(index);
index++;
return twoDArray;
// to2dArray method
public static void drawBoard(char[][] arr)
System.out.println("---------");
for (int i = 0; i < arr.length; i++)
System.out.print("| ");
for (int j = 0; j < arr[i].length; j++)
if (arr[i][j] == '_')
System.out.print(" " + " ");
else
System.out.print(arr[i][j] + " ");
System.out.println("|");
System.out.println("---------");
//end drawBoard method
public static boolean xWon (char[][] gameBoard)
char[] xWins = 'X', 'X', 'X';
char[][] winningCombos =
gameBoard[0][0], gameBoard[0][1], gameBoard[0][2], //horizontal
gameBoard[1][0], gameBoard[1][1], gameBoard[1][2], //horizontal
gameBoard[2][0], gameBoard[2][1], gameBoard[2][2], //horizontal
gameBoard[0][0], gameBoard[1][0], gameBoard[2][0], //vertical
gameBoard[0][1], gameBoard[1][1], gameBoard[2][1], //vertical
gameBoard[0][2], gameBoard[1][2], gameBoard[2][2], //vertical
gameBoard[0][0], gameBoard[1][1], gameBoard[2][2], //diagonal
gameBoard[0][2], gameBoard[1][1], gameBoard[2][0] //diagonal
;
for (char[] charArray : winningCombos)
if (Arrays.equals(xWins, charArray))
return true;
return false;
// end xWon method
public static boolean oWon (char[][] gameBoard)
char[] oWins = 'O', 'O', 'O';
char[][] winningCombos =
gameBoard[0][0], gameBoard[0][1], gameBoard[0][2], //horizontal
gameBoard[1][0], gameBoard[1][1], gameBoard[1][2], //horizontal
gameBoard[2][0], gameBoard[2][1], gameBoard[2][2], //horizontal
gameBoard[0][0], gameBoard[1][0], gameBoard[2][0], //vertical
gameBoard[0][1], gameBoard[1][1], gameBoard[2][1], //vertical
gameBoard[0][2], gameBoard[1][2], gameBoard[2][2], //vertical
gameBoard[0][0], gameBoard[1][1], gameBoard[2][2], //diagonal
gameBoard[0][2], gameBoard[1][1], gameBoard[2][0] //diagonal
;
for (char[] charArray : winningCombos)
if (Arrays.equals(oWins, charArray))
return true;
return false;
// end oWon method
public static boolean hasEmptyCells(char[][] gameBoard)
for (char[] arr : gameBoard)
for (char ch : arr)
if (ch == '_')
return true;
return false;
//end of hasEmptyCells method;
public static boolean gameFinished(char[][] gameBoard)
if (xWon(gameBoard) || oWon(gameBoard) || draw(gameBoard))
return true;
return false;
//end of gameFinished method.
public static boolean draw(char[][] gameBoard)
if(!xWon(gameBoard) && !oWon(gameBoard) && !hasEmptyCells(gameBoard))
return true;
return false;
public static char[][] gameState(char[][] gameBoard)
if (xWon(gameBoard))
System.out.println("X wins");
return gameBoard;
else if (oWon(gameBoard))
System.out.println("O wins");
return gameBoard;
else if (draw(gameBoard))
System.out.println("Draw");
return gameBoard;
return gameBoard;
//gameState method
// Main class
【问题讨论】：
getRandomNumber() 中有一个永不中断的无限循环（在某些情况下）。编辑：我认为该方法不应该在抽奖后输入
【参考方案1】：
平局发生在这中间：
while (!gameFinished(gameBoard))
drawBoard(computerMove(gameBoard, player1));
gameState(gameBoard);
// Result is now Draw
drawBoard(computerMove(gameBoard, player2));
gameState(gameBoard);
您尝试在第一个computerMove 之后生成另一个computerMove，但这是不可能的，因为板已经满了。
一个可能的解决方案是在尝试另一个动作之前检查gameFinished
【讨论】：
非常感谢您的帮助，它现在可以按预期工作了。以上是关于井字游戏循环在平局时停止 - Java的主要内容，如果未能解决你的问题，请参考以下文章