Java八皇后，java皇后,package quee

Java八皇后，java皇后,package quee

package queen;import java.awt.*;import java.awt.event.*;@SuppressWarnings("serial")class equeen extends Frame implements ActionListener {    // 构造界面和定义数组    Button enter;    Button clean;    Button exit;    int num[][]=new int[93][9];    int i, j, q,cont=0;    int b[] = new int[9];    Label a[][] = new Label[9][9];    equeen(String s) {        GridLayout grid;        grid = new GridLayout(9, 8);        setLayout(grid);        enter = new Button("begin");        clean = new Button("clean");        exit = new Button("esit");        for (int i = 1; i < 9; i++) {            for (int j = 1; j < 9; j++) {                a[i][j] = new Label();                if ((i + j) % 2 == 0)                    a[i][j].setBackground(Color.yellow);                else                    a[i][j].setBackground(Color.gray);                add(a[i][j]);            }        }        add(enter);        add(clean);        add(exit);        enter.addActionListener(this);        clean.addActionListener(this);        exit.addActionListener(this);        setBounds(100, 100, 300, 300);        // 大小        setVisible(true);        validate();    }    //判断函数    public boolean find(int i,int k){        int j;        j=1;        while(j<k){            if((b[j]==i)||(Math.abs(b[j]-i)==Math.abs(j-k)))                return false;            j++;        }        return true;    }    void place(int k, int n){        if(k>n){            printf(n);            //a[7][7].setText("K");//该88矩形框  是从 00开始的！！        }        else            for(int i=1;i<=n;i++)                if(find(i,k)){                    b[k]=i;                    place(k+1,n);                }    }    void printf(int n)    {        cont++;        int i;        System.out.println("第"+cont+"个解");        for(i=1;i<=n;i++){            num[cont][i]=b[i];            //q=b[i];            //a[q][i].setText("K");            //clean();            System.out.print("--"+b[i]);        }        System.out.println();        //for(i=1;i<=n;i++)        //System.out.println("dddddd"+num[1][i]);    }    void clean(){        for (int i = 1; i < 9; i++) {            for (int j = 1; j < 9; j++) {                a[i][j].setText("");            }        }    }    void write(){        int w=(int)(Math.random()*93);        for (int i = 1; i < 9; i++) {        int c=  num[w][i];            a[c][i].setText("K");        }    }    public void actionPerformed(ActionEvent e) {        if (e.getSource() == enter) {            clean();            //a[7][7].setText("K");            write();        }        if (e.getSource() == clean) {            clean();        }        if (e.getSource() == exit) {            System.exit(0);        }    }}class queen {    public static void main(String[] args) {        equeen a = new equeen("bbb");        a.place(1, 8);    }}//该片段来自于http://byrx.net