Java利用随机分钱模拟财富变化
作者：天人合一peng
这篇文章主要为大家详细介绍了Java如何利用随机分钱思想模拟财富的变化，文中的示例代码讲解详细，感兴趣的小伙伴可以跟随小编一起学习一下
效果图
如果财富为负值时可以通过键盘和鼠标事件让其反转方向
示例代码
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.Arrays;
public class AlgoVisualizer {
private static int DELAY = 40;
private int[] money;
private AlgoFrame frame;
public AlgoVisualizer(int sceneWidth, int sceneHeight){
// 初始化数据
money = new int[100];
for(int i = 0 ; i < money.length ; i ++)
money[i] = 100;
// 初始化视图
EventQueue.invokeLater(() -> {
frame = new AlgoFrame("Money Problem", sceneWidth, sceneHeight);
this.frame.addKeyListener(new AlgoKeyListener());
frame.addMouseListener(new AlgoMouseListener());
new Thread(() -> {
run();
}).start();
});
}
public void run(){
while(true){
// 改进2：是否排序
Arrays.sort(money);
frame.render(money);
AlgoVisHelper.pause(DELAY);
// 改进1：每一帧执行的轮数
for(int k = 0 ; k < 50 ; k ++){
for(int i = 0 ; i < money.length; i ++){
// 改进3：允许money为负值
//if(money[i] > 0){
int j = (int)(Math.random() * money.length);
money[i] -= 1;
money[j] += 1;
//}
}
}
}
}
public static void main(String[] args) {
int sceneWidth = 1000;
int sceneHeight = 800;
AlgoVisualizer vis = new AlgoVisualizer(sceneWidth, sceneHeight);
}
private class AlgoKeyListener extends KeyAdapter {
private AlgoKeyListener() {}
public void keyReleased(KeyEvent event) {
if (event.getKeyChar() == 'u') {
System.out.println("字母u");
AlgoVisHelper.is_change = true;
}
if (event.getKeyChar() == 'd') {
System.out.println("字母d");
AlgoVisHelper.is_change = false;
}
if (event.getKeyChar() == ' ') {
System.out.println("空格");
AlgoVisHelper.is_change = !AlgoVisHelper.is_change ;
}
}
}
private class AlgoMouseListener extends MouseAdapter {
private AlgoMouseListener() {
}
public void mousePressed(MouseEvent event) {
// event.translatePoint(0, -(AlgoVisualizer.this.frame.getBounds().height - AlgoVisualizer.this.frame.getCanvasHeight()));
// left
if (event.getButton() == 1)
{
System.out.println("Left button pressed");
AlgoVisHelper.is_change = true;
}
// right
else if( event.getButton() == 3)
{
System.out.println("right button pressed");
AlgoVisHelper.is_change = false;
}
// System.out.println("mousePressed");
// AlgoVisHelper.is_change = !AlgoVisHelper.is_change;
}
}
}import javax.swing.*;
import java.awt.*;
import java.awt.geom.*;
import java.lang.InterruptedException;
public class AlgoVisHelper {
private AlgoVisHelper(){}
public static final Color Red = new Color(0xF44336);
public static final Color Pink = new Color(0xE91E63);
public static final Color Purple = new Color(0x9C27B0);
public static final Color DeepPurple = new Color(0x673AB7);
public static final Color Indigo = new Color(0x3F51B5);
public static final Color Blue = new Color(0x2196F3);
public static final Color LightBlue = new Color(0x03A9F4);
public static final Color Cyan = new Color(0x00BCD4);
public static final Color Teal = new Color(0x009688);
public static final Color Green = new Color(0x4CAF50);
public static final Color LightGreen = new Color(0x8BC34A);
public static final Color Lime = new Color(0xCDDC39);
public static final Color Yellow = new Color(0xFFEB3B);
public static final Color Amber = new Color(0xFFC107);
public static final Color Orange = new Color(0xFF9800);
public static final Color DeepOrange = new Color(0xFF5722);
public static final Color Brown = new Color(0x795548);
public static final Color Grey = new Color(0x9E9E9E);
public static final Color BlueGrey = new Color(0x607D8B);
public static final Color Black = new Color(0x000000);
public static final Color White = new Color(0xFFFFFF);
public static void strokeCircle(Graphics2D g, int x, int y, int r){
Ellipse2D circle = new Ellipse2D.Double(x-r, y-r, 2*r, 2*r);
g.draw(circle);
}
public static void fillCircle(Graphics2D g, int x, int y, int r){
Ellipse2D circle = new Ellipse2D.Double(x-r, y-r, 2*r, 2*r);
g.fill(circle);
}
public static void strokeRectangle(Graphics2D g, int x, int y, int w, int h){
Rectangle2D rectangle = new Rectangle2D.Double(x, y, w, h);
g.draw(rectangle);
}
public static void fillRectangle(Graphics2D g, int x, int y, int w, int h){
Rectangle2D rectangle = new Rectangle2D.Double(x, y, w, h);
g.fill(rectangle);
}
public static void setColor(Graphics2D g, Color color){
g.setColor(color);
}
public static void setStrokeWidth(Graphics2D g, int w){
int strokeWidth = w;
g.setStroke(new BasicStroke(strokeWidth, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND));
}
public static void pause(int t) {
try {
Thread.sleep(t);
}
catch (InterruptedException e) {
System.out.println("Error sleeping");
}
}
public static void putImage(Graphics2D g, int x, int y, String imageURL){
ImageIcon icon = new ImageIcon(imageURL);
Image image = icon.getImage();
g.drawImage(image, x, y, null);
}
public static void drawText(Graphics2D g, String text, int centerx, int centery){
if(text == null)
throw new IllegalArgumentException("Text is null in drawText function!");
FontMetrics metrics = g.getFontMetrics();
int w = metrics.stringWidth(text);
int h = metrics.getDescent();
g.drawString(text, centerx - w/2, centery + h);
}
public static int changeDir(int change)
{
// System.out.println("bollen");
change += 2;
return change;
}
public static boolean is_change = false;
}import java.awt.Graphics2D;
import java.awt.Graphics;
import java.awt.Dimension;
import java.awt.Color;
import java.awt.RenderingHints;
import java.util.ArrayList;
import java.util.Map;
import java.util.HashMap;
import javax.swing.*;
public class AlgoFrame extends JFrame{
private int canvasWidth;
private int canvasHeight;
public AlgoFrame(String title, int canvasWidth, int canvasHeight){
super(title);
this.canvasWidth = canvasWidth;
this.canvasHeight = canvasHeight;
AlgoCanvas canvas = new AlgoCanvas();
setContentPane(canvas);
pack();
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setResizable(false);
setVisible(true);
}
public AlgoFrame(String title){
this(title, 1024, 768);
}
public int getCanvasWidth(){return canvasWidth;}
public int getCanvasHeight(){return canvasHeight;}
// data
private int[] money;
public void render(int[] money){
this.money = money;
repaint();
}
private class AlgoCanvas extends JPanel{
public AlgoCanvas(){
// 双缓存
super(true);
}
@Override
public void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2d = (Graphics2D)g;
// 抗锯齿
RenderingHints hints = new RenderingHints(
RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
hints.put(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
g2d.addRenderingHints(hints);
// 具体绘制
int w = canvasWidth / money.length;
for(int i = 0 ; i < money.length ; i ++)
if(money[i] > 0) {
AlgoVisHelper.setColor(g2d, AlgoVisHelper.Blue);
AlgoVisHelper.fillRectangle(g2d,
i * w + 1, canvasHeight / 2 - money[i], w - 1, money[i]);
}
else{
if(AlgoVisHelper.is_change == true)
{
AlgoVisHelper.setColor(g2d, AlgoVisHelper.Red);
AlgoVisHelper.fillRectangle(g2d,
i * w + 1, canvasHeight / 2 + money[i] , w - 1, -money[i]);
}
else
{
AlgoVisHelper.setColor(g2d, AlgoVisHelper.Red);
AlgoVisHelper.fillRectangle(g2d,
i * w + 1, canvasHeight / 2 , w - 1, -money[i]);
}
}
下移至图像下面开始
// if(money[i] > 0) {
// AlgoVisHelper.setColor(g2d, AlgoVisHelper.Blue);
// AlgoVisHelper.fillRectangle(g2d,
// i * w + 1, canvasHeight - money[i], w - 1, money[i]);
// }
// else{
//
// AlgoVisHelper.setColor(g2d, AlgoVisHelper.Red);
// AlgoVisHelper.fillRectangle(g2d,
// i * w + 1, canvasHeight + money[i] , w - 1, -money[i]);
// }
//
}
@Override
public Dimension getPreferredSize(){
return new Dimension(canvasWidth, canvasHeight);
}
}
}到此这篇关于Java利用随机分钱模拟财富变化的文章就介绍到这了,更多相关Java随机分钱内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家！