怎么用Java實現(xiàn)三子棋游戲

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一、題目要求

編寫程序，實現(xiàn)簡單的三子棋游戲。在三子棋中，雙方在3×3的棋盤中輪流下棋，一方用*示，另一方用O表示。如果一方的3個棋子占據(jù)了同一行，同一列或者對角線，則該方獲勝。如果棋盤已被棋子占滿，但沒有一方獲勝則出現(xiàn)平局。在程序中，一方為用戶，用戶在界面上輸入每次下棋的位置；另一方下棋的位置為隨機自動生成。

二、代碼示例

import javax.swing.JOptionPane;
 
public class Main {
 
    public static void main(String[] args) {
        char []s=new char[9];
        for(int i=0;i<9;i++) {
            s[i]=(char)(i+49);
        }
        int i=0;
        while(i++<5) {
            String str=JOptionPane.showInputDialog("------------------\n"
                 +"|  "+s[0]+"  |  "+s[1]+"  |  "+s[2]+"  |\n"
                 +"|  "+s[3]+"  |  "+s[4]+"  |  "+s[5]+"  |\n"
                 +"|  "+s[6]+"  |  "+s[7]+"  |  "+s[8]+"  |\n"
                 +"------------------\n"
                 + "請輸入位置：");
            while(str.length()==0||(str.charAt(0)-49)<0||(str.charAt(0)-49)>8) {
                str=JOptionPane.showInputDialog("------------------\n"
                     +"|  "+s[0]+"  |  "+s[1]+"  |  "+s[2]+"  |\n"
                     +"|  "+s[3]+"  |  "+s[4]+"  |  "+s[5]+"  |\n"
                     +"|  "+s[6]+"  |  "+s[7]+"  |  "+s[8]+"  |\n"
                     +"------------------\n"
                     + "輸入錯誤，請重新輸入：");
            }
            char index=str.charAt(0);
            while(s[index-49]=='*'||s[index-49]=='o') {
                str=JOptionPane.showInputDialog("------------------\n"
                     +"|  "+s[0]+"  |  "+s[1]+"  |  "+s[2]+"  |\n"
                     +"|  "+s[3]+"  |  "+s[4]+"  |  "+s[5]+"  |\n"
                     +"|  "+s[6]+"  |  "+s[7]+"  |  "+s[8]+"  |\n"
                     +"------------------\n"
                     + "此位置已占用，請重新輸入：");
                index=str.charAt(0);
                while(str.length()==0||(str.charAt(0)-49)<0||(str.charAt(0)-49)>8) {
                    str=JOptionPane.showInputDialog("------------------\n"
                         +"|  "+s[0]+"  |  "+s[1]+"  |  "+s[2]+"  |\n"
                         +"|  "+s[3]+"  |  "+s[4]+"  |  "+s[5]+"  |\n"
                         +"|  "+s[6]+"  |  "+s[7]+"  |  "+s[8]+"  |\n"
                         +"------------------\n"
                         + "輸入錯誤，請重新輸入：");
                }
            }
            s[index-49]='*';
            if((s[0]=='*'&&s[3]=='*'&&s[6]=='*')||
                       (s[1]=='*'&&s[4]=='*'&&s[7]=='*')||
                       (s[2]=='*'&&s[5]=='*'&&s[8]=='*')||
                       (s[0]=='*'&&s[1]=='*'&&s[2]=='*')||
                       (s[3]=='*'&&s[4]=='*'&&s[5]=='*')||
                       (s[6]=='*'&&s[7]=='*'&&s[8]=='*')||
                       (s[0]=='*'&&s[4]=='*'&&s[8]=='*')||
                       (s[2]=='*'&&s[4]=='*'&&s[6]=='*')) 
            {
                JOptionPane.showMessageDialog(null, "------------------\n"
                     +"|  "+s[0]+"  |  "+s[1]+"  |  "+s[2]+"  |\n"
                     +"|  "+s[3]+"  |  "+s[4]+"  |  "+s[5]+"  |\n"
                     +"|  "+s[6]+"  |  "+s[7]+"  |  "+s[8]+"  |\n"
                     +"------------------\n"
                     + "恭喜你贏了");
                break;
            }
            int b=(int)(Math.random()*9);
            while(s[b]=='*'||s[b]=='o')
            {
                b=(int)(Math.random()*9);
            }
            s[b]='o';
            if((s[0]=='o'&&s[3]=='o'&&s[6]=='o')||
                       (s[1]=='o'&&s[4]=='o'&&s[7]=='o')||
                       (s[2]=='o'&&s[5]=='o'&&s[8]=='o')||
                       (s[0]=='o'&&s[1]=='o'&&s[2]=='o')||
                       (s[3]=='o'&&s[4]=='o'&&s[5]=='o')||
                       (s[6]=='o'&&s[7]=='o'&&s[8]=='o')||
                       (s[0]=='o'&&s[4]=='o'&&s[8]=='o')||
                       (s[2]=='o'&&s[4]=='o'&&s[6]=='o')) 
            {
                JOptionPane.showMessageDialog(null, "------------------\n"
                     +"|  "+s[0]+"  |  "+s[1]+"  |  "+s[2]+"  |\n"
                     +"|  "+s[3]+"  |  "+s[4]+"  |  "+s[5]+"  |\n"
                     +"|  "+s[6]+"  |  "+s[7]+"  |  "+s[8]+"  |\n"
                     +"------------------\n"
                     + "失敗了，再接再勵");
                break;
            }
 
        }
        if(i==6) {
            JOptionPane.showMessageDialog(null, "------------------\n"
                     +"|  "+s[0]+"  |  "+s[1]+"  |  "+s[2]+"  |\n"
                     +"|  "+s[3]+"  |  "+s[4]+"  |  "+s[5]+"  |\n"
                     +"|  "+s[6]+"  |  "+s[7]+"  |  "+s[8]+"  |\n"
                     +"------------------\n"
                     + "平局，還差一點哦");
        }
    }
}

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