基於Java如何實作大樂透號碼產生器

package com.xiaoxuzhu;

import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Random;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.SwingConstants;
import javax.swing.UIManager;
import javax.swing.border.EmptyBorder;
/**
 * Description: 大乐透
 *
 * @author xiaoxuzhu
 * @version 1.0
 *
 * <pre class="brush:php;toolbar:false">
 * 修改记录:
 * 修改后版本	        修改人		修改日期			修改内容
 * 2022/4/30.1	    xiaoxuzhu		2022/4/30		    Create
 * 

* @date 2022/4/30 */ public class SuperFun extends JFrame { /** * */ private static final long serialVersionUID = 6787592245621788484L; private JPanel contentPane; private JTextField textField; private JTextArea textArea; /** * Launch the application. */ public static void main(String[] args) { try { UIManager .setLookAndFeel("com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel"); } catch (Throwable e) { e.printStackTrace(); } EventQueue.invokeLater(new Runnable() { public void run() { try { SuperFun frame = new SuperFun(); frame.setVisible(true); } catch (Exception e) { e.printStackTrace(); } } }); } /** * Create the frame. */ public SuperFun() { setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setBounds(100, 100, 450, 300); contentPane = new JPanel(); contentPane.setBorder(new EmptyBorder(5, 5, 5, 5)); contentPane.setLayout(new BorderLayout(0, 0)); setContentPane(contentPane); setTitle("大乐透号码生成器"); JPanel panel = new JPanel(); contentPane.add(panel, BorderLayout.NORTH); panel.setLayout(new GridLayout(1, 2, 5, 5)); JLabel label = new JLabel("请输入号码组数："); label.setFont(new Font("微软雅黑", Font.PLAIN, 18)); label.setHorizontalAlignment(SwingConstants.CENTER); panel.add(label); textField = new JTextField(); textField.setFont(new Font("微软雅黑", Font.PLAIN, 18)); panel.add(textField); textField.setColumns(10); JPanel buttonPanel = new JPanel(); contentPane.add(buttonPanel, BorderLayout.SOUTH); JButton button = new JButton("生成号码"); button.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { int times = Integer.parseInt(textField.getText());// 获得用户输入的需要生成的中奖号码个数 // 省略提示购买数量太多的代码 StringBuilder sb = new StringBuilder();// 创建字符串生成器对象 for (int i = 0; i < times; i++) { List startList = getStartNumber();// 获得前段号码的集合 List endList = getEndNumber();// 获得后段号码的集合 for (int m = 0; m < startList.size(); m++) { sb.append(startList.get(m));// 在字符串生成器中添加前段号码 } sb.append(" "); for (int n = 0; n < endList.size(); n++) { sb.append(endList.get(n));// 在字符串生成器中添加后段号码 } sb.append("\n"); } textArea.setText(sb.toString());// 在文本域中显示号码 } }); button.setFont(new Font("微软雅黑", Font.PLAIN, 18)); buttonPanel.add(button); JScrollPane scrollPane = new JScrollPane(); contentPane.add(scrollPane, BorderLayout.CENTER); textArea = new JTextArea(); textArea.setFont(new Font("微软雅黑", Font.PLAIN, 18)); scrollPane.setViewportView(textArea); } /** * 随机生成前段5个号码的方法 * * @return */ public List getStartNumber() { List list = new ArrayList(); // 创建前段号码集合 String luckyNumber = ""; for (int i = 1; i < 36; i++) { // 初始化前段号码集合 if (i < 10) { list.add("0" + i + " ");// 添加0~9的号码 } else { list.add("" + i + " ");// 添加大于9的号码 } } int roundIndex = 0; List luckylist = new ArrayList(); // 保存前段号码的List集合 for (int j = 0; j < 5; j++) { int amount = list.size(); // 获取前段号码的个数 Random r = new Random(); // 创建并实例化Random的对象 roundIndex = r.nextInt(amount); // 获取一个0到amount-1的随机数 luckyNumber = list.get(roundIndex); // 获取幸运数字 luckylist.add(luckyNumber); // 添加luckylist中 list.remove(roundIndex); // 移除刚刚产生的号码 } Collections.sort(luckylist); // 对前段号码进行排序 return luckylist; } /** * 随机生成后段2个号码的方法 * * @return */ public List getEndNumber() { List list = new ArrayList(); // 创建后段号码集合 String luckyNumber = ""; for (int i = 1; i < 13; i++) { // 初始化后段号码集合 if (i < 10) { list.add("0" + i + " ");// 添加0~9的号码 } else { list.add("" + i + " ");// 添加大于9的号码 } } int roundIndex = 0; List luckylist = new ArrayList(); // 保存后段号码的List集合 for (int j = 0; j < 2; j++) { int amount = list.size(); // 获取后段号码的个数 Random r = new Random(); // 创建并实例化Random的对象 roundIndex = r.nextInt(amount); // 获取一个0到amount-1的随机数 luckyNumber = list.get(roundIndex); // 获取幸运数字 luckylist.add(luckyNumber); // 添加luckylist中 list.remove(roundIndex); // 移除刚刚产生的号码 } Collections.sort(luckylist); // 对后段号码进行排序 return luckylist; } }

登入後複製