题
所以我为我的班级做了一个井字作业。我已经成功地创建了一个简单的井字程序,但不知何故,检查绘制的方法有时不会出来。如果一切都充满了,但没有赢家,那么这是一个平局。但是,如果除了行0列1之外,其他所有内容都被填充,即使该框仍然为空,它仍然会显示"draw"。如果你不明白我的意思,只需尝试填写除顶行中间框之外的所有内容,但没有获胜,它会说"draw",即使最后一个框没有填充。我在我的代码中做错了什么????司机来了:导入javax。摇摆。[医]jopionpane;
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.");}
}
}
这里是对象:公共类TwoDimensionalArrayy { 私有字符串currentState="GO";私人char[][]董事会;私有静态最终int行=3;私有静态最终int列=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}
}
}
}
}
解决方案
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
}
}
}
}
该 break
这里将逃脱内部for循环,但不是外部循环。本质上来说 isDraw
只考虑最后一行。你应该尝试使用 return
相反。
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