算法练习（三）井字棋

输入一串数字，代表下棋步骤，甲为先手乙为后手，输出"jia win"或者"yi win"或者平局“drew”

棋盘为

1 2 3

4 5 6

7 8 9

import java.util.Scanner;
 
/**
 * 给一串数字，代表下棋的步骤
 * 甲为先手，乙为后手
 * 判断输赢
 * 棋盘为
 *  1，2，3
 *  4，5，6
 *  7，8，9
 */
public class JingZiQi {
 
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String str = sc.nextLine();
        int[][] chuan = new int[][]{
                {1,2,3},
                {4,5,6},
                {7,8,9}
        };
        for(int i=0;i
            for(int j=0;j<3;j++){
                for(int k=0;k<3;k++){
                    if(chuan[j][k] == Integer.parseInt(str.substring(i,i+1))){
                        if(i%2==0){
                            chuan[j][k] = 0;
                        }else {
                            chuan[j][k] = -1;
                        }
                    }
                }
            }
        }
        for(int j = 0; j < 3; j++) {
            for (int k = 0; k < 3; k++) {
                System.out.print(chuan[j][k]+" ");
            }
            System.out.println();
        }
 
        for(int i=0;i<3;i++){
            if(chuan[0][i]==0&&chuan[1][i]==0&&chuan[2][i]==0){
                System.out.println("jia win");
                return;
            }
            if(chuan[0][i]==-1&&chuan[1][i]==-1&&chuan[2][i]==-1){
                System.out.println("yi win");
                return;
            }
            if(chuan[i][0]==0&&chuan[i][1]==0&&chuan[i][2]==0){
                System.out.println("jia win");
                return;
            }
            if(chuan[i][0]==-1&&chuan[i][1]==-1&&chuan[i][2]==-1){
                System.out.println("yi win");
                return;
            }
        }
        if(chuan[0][0]==0&&chuan[1][1]==0&&chuan[2][2]==0){
            System.out.println("jia win");
            return;
        }
        if(chuan[0][0]==-1&&chuan[1][1]==-1&&chuan[2][2]==-1){
            System.out.println("yi win");
            return;
        }
        System.out.println("drew");
        return;
    }
 
 
}
 
 

   示例：

输入：5234689

输出：jia win