int[] s = new int[5];
            Random number = new Random();
            for (int i = 0; i < 5; i++)            {
                s[i] = number.Next();
                Console.WriteLine(s[i]);
            }


            int max = s[0];
            for (int i = 1; i <= 4; i++)
            {
                if (s[i] >= max)
                {
                    max = s[i];
                }
            }
            Console.WriteLine("最大值为{0}", max);
            Console.ReadKey();

/** 做一个窗口 里面有文件选项，文件里有子菜单，可以打开，保存等
import javax.swing.*;
import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;
public class Example10_2{
    public static void main(String agrs[]){
    FirstWindow win=new FirstWindow("first 窗口");
    }
}

class FirstWindow extends JFrame{
    JMenuBar menubar;
    JMenu menu;
    JMenuItem item1,item2;
    FirstWindow (String s){
    setTitle("一个窗口");
    setSize(500,500);
    setLocation(120,120);
    setVisible(true);
    menubar=new JMenuBar();
    menu=new JMenu("文件");
    item1=new JMenuItem("打开",new ImageIcon("open.gif"));
    item2=new JMenuItem("保存",new ImageIcon("save.gif"));
    item1.setAccelerator(KeyStroke.getKeyStroke('o'));
    item2.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S,InputEvent.CTRL_MASK));
    menu.add(item1);
    menu.addSeparator();
    menu.add(item2);
    menu.add(menu);
    setJMenuBar(menubar);
    validate();
    setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
    }
} 

#include<stdio.h>
int gcd(int a, int b)
{
    int r;
    while(r = a % b) a = b, b = r;
    return b;
}
long long f(long long a, long long b, long long c)
{
    return (abs(b) == 1 ? c : c - a * f(b, a % b, c % b)) / b;
}
int cal(int L, int W, long long x, long long y)
{
    int c, g;
    c = W - L + x - y;
    g = gcd(L, W);
    if(c % g) return -1;
    L /= g; W /= g; c /= g;
    y = f(L, -W, c);
    x = (c + W * y) / L;
    while(x < 0 || y < 0) x += W, y += L;
    return (x & 1) + ((y & 1) << 1);
}
int main()
{
    int L, W, x, y;
    while(scanf("%d%d%d%d", &L, &W, &x, &y), (L | W | x | y))
    printf("%d\n", cal(L, W, x, y));
    return 0;
}

class Try:
     def xls():
         #xls info
         wbk=xlwt.Workbook()
         sheet=wbk.add_sheet('sheet 1')
         #connect Info
         try:
            
            conn = MySQLdb.connect('localhost','root','ok','smyw_edit_server')
             cursor = conn.cursor()
             sql='select * from ser_user'
            
            #获取要打印的列名
             columnName=[u'编号',u'用户名',u'密码',u'注册时间',u'最后一次登录时间',u'是否启用']
             #获取列数
             columnLen=len(columnName)
             #打印出标题
             for i in range(columnLen):
                     sheet.write(0,i,columnName[i])
            
            #执行sql        
            cursor.execute(sql)
             #获取到查询得到的数据
             dataInfo=cursor.fetchall()
             dataLen = len(dataInfo)
             rowLine=0
             #排个顺序
             for line in range(dataLen):
                     lineInfo=dataInfo[line]
                     rowLine+=1
                     columnLine=0
                     #print line
                     #按每行打印
                     for row in lineInfo:
                             if type(row)==str:
                                 row=row.encode('utf-8')
                                 #print row
                             sheet.write(rowLine,columnLine,row)
                             columnLine+=1
            
            #print table
             #保存打印的excel数据
             wbk.save('c:%s.xls' % 'info')
             #print xlwt.Workbook()
             #打开打印的excel数据
            
            cursor.close()
             conn.commit()
             conn.close()
             sys.exit(1)
         except Exception,e:
             print e
         finally :
             print 'over!'
     if __name__=='__main__':
             xls() 

FUNCTION dbc2creat("数据库名","prg文件名")
CLOSE DATABASES
OPEN DATABASE 数据库名 EXCLUSIVE
DIMENSION gatables(1)
createc="CREATE DATABASE "+数据库名+CHR(13)
gatables=''
m=ADBOBJECTS(gatables, "TABLE")
IF NOT EMPTY(m)
    FOR i=1 TO m
        USE gatables(i) EXCLUSIVE
        SELECT gatables(i)
        ziduan=AFIELDS(arrayname)
        createc=createc+"Create table "+gatables(i)+" ("
        FOR i2=1 TO ziduan
            createc=createc+arrayname(i2,1)+SPACE(1)+arrayname(i2,2)+SPACE(1)
            IF AT(arrayname(i2,2),[CNFQV])>0
                createc=createc+"("+ALLTRIM(STR(arrayname(i2,3)))+SPACE(1)
                IF EMPTY(arrayname(i2,4))=.F.
                    createc=createc+ALLTRIM(STR(arrayname(i2,3)))
                ENDIF
                createc=createc+")"
            ENDIF
            IF NOT EMPTY(arrayname(i2,9))
                createc=createc+" default "+arrayname(i2,9)
            ENDIF
            createc=createc+","
        ENDFOR
        createc=LEFT(createc,LEN(createc)-1)+")"+CHR(13)
        USE
    ENDFOR
ENDIF
=STRTOFILE(createc,"prg文件名.prg")
CLOSE DATABASES
ENDFUNC