import java.awt.*;
import java.awt.event.*;
import java.io.*;
import javax.swing.*;
import java.util.*;
public class ShuDu extends JFrame implements ActionListener,ItemListener
{
private MenuBar menubar=new MenuBar();
private Menu menu_file=new Menu("文件");
private Menu menu_edit=new Menu("结果");
private Menu menu_help=new Menu("帮助");
private MenuItem item_ans=new MenuItem("答案");
private MenuItem item_sol=new MenuItem("提交");
private MenuItem item_rem=new MenuItem("重来");
private MenuItem item_next=new MenuItem("开局");
private MenuItem item_auther=new MenuItem("作者");
private MenuItem item_exit=new MenuItem("退出");
private JButton button_sol=new JButton("提交");
private JButton button_ans=new JButton("答案");
private JButton button_rem=new JButton("重来");
private JButton button_ext=new JButton("退出");
private JButton button_aur=new JButton("作者");
private JButton button_next=new JButton("开局");
private JComboBox box=new JComboBox();
static int data[][]=new int[10][10];
static int ansdata[][]=new int[10][10];
static int row[][]=new int[10][10];
static int col[][]=new int[10][10];
static int sql[][][]=new int[4][4][10];
static JTextField text[][]=new JTextField[10][10];
static String atext[][]=new String[10][10];
static int hard=2;
static int datahard[]={2,3,5}; // 不同的难度
class ShuDuAns extends JFrame
{
private JTextField atext[][]=new JTextField[10][10];
public ShuDuAns()
{
super("答案");
this.setSize(300,300);
this.setLocation(200,200);
this.setVisible(true);
this.setResizable(false);
JPanel apanel_but=new JPanel(new FlowLayout(FlowLayout.LEFT));
JPanel apanel_txt=new JPanel(new GridLayout(3,3,2,2));
JPanel apanel[]=new JPanel[10];
for(int i=1;i<=9;i++)
{
apanel[i]=new JPanel(new GridLayout(3,3));
apanel_txt.add(apanel[i]);
int m=(i+2)/3*3-2;
int n=((i-1)%3+1)*3-2;
for(int j=m;j<=m+2;j++)
{