Leo
5 years ago
parent
ee765c4400
commit
9b8b8ccab2
@ -0,0 +1,234 @@
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package leo;
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import java.awt.*;
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import java.util.Date;
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import javax.swing.*;
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/**
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* @author Leo
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* @ClassName Clock
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* @DATE 2020/12/4 2:15 下午
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* @Description
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*/
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public class Clock extends JComponent {
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/**
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*
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*/
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private static final long serialVersionUID = -5379472973578609775L;
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private Font f = new Font("微软雅黑", Font.PLAIN,15);
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private Font f2 = new Font("微软雅黑",Font.BOLD,15);
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private JLabel l = new JLabel("当前时间：");
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private JLabel display = new JLabel();
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private JLabel display2 = new JLabel("");
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private int hour = 0;
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private int min = 0;
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private int sec = 0;
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private Date now = new Date();
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private Graphics2D g;
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final double PI = Math.PI;
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private String strTime = "" ;
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@SuppressWarnings("deprecation")
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public Clock(){
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add(l);
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l.setBounds(120, 320, 80, 20);
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l.setFont(f);
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add(display);
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display.setBounds(195, 320, 80, 20);
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display.setFont(f);
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display.setBorder(BorderFactory.createLineBorder(Color.black));
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add(display2);
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display2.setBounds(90, 350, 250, 20);
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display2.setFont(f);
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hour = now.getHours();
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min = now.getMinutes();
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sec = now.getSeconds();
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setVisible(true);
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}
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public void paintComponent(Graphics g1){
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double x,y;
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super.paintComponent(g1);
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g = (Graphics2D) g1;
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//反锯齿开关开
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g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
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//画表盘
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g.setPaint(new GradientPaint(5,40,Color.red,15,50,Color.yellow,true));
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g.setStroke( new BasicStroke(3,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL));
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g.drawOval(75, 40, 250, 250);
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g.fillOval(195, 160, 10, 10);
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g.setColor(Color.black);
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//画60个点
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for(int i = 0;i < 60;i++)
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{
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double[] co = new double[2];
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co = paint_Dot(i * 2 * PI / 60);
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x = co[0];
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y = co[1];
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if(i == 0 || i == 15 || i == 30 || i == 45)//画3,6,9,12四个大点
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{
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g.fillOval((int)(x - 5 + 200),(int)(y - 5 + 165),10,10);
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}
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else//其他小点
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{
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g.fillOval((int)(x - 2.5 + 200),(int)(y - 2.5 + 165),3,3);
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}
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}
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//画四个数字
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g.setFont(f2);
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g.drawString("3", 300, 171);
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g.drawString("6", 195, 273);
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g.drawString("9", 91, 171);
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g.drawString("12", 195, 68); //g.drawString("12", 190, 68);
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//画时针，分针，秒针
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paint_HourPointer(hour*3600 + min*60 + sec,g);//时针走过的秒数
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paint_MinutePointer(min*60 + sec,g);//分针走过的秒数
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paint_SecondPointer(sec,g);//秒针走过的秒数
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}
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public void showUI(){
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new Thread() {
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@SuppressWarnings("deprecation")
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public void run() {
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while (true)
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{
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now = new Date();
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hour = now.getHours();
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min = now.getMinutes();
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sec = now.getSeconds();
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try {
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Thread.sleep(1000);
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} catch (InterruptedException ex) {
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ex.printStackTrace();
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}
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showTime();
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repaint();
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}
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}
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}.start();
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}
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public void paint_HourPointer(int second,Graphics2D g){//second表示当前时间的时针相对00:00:00走了多少秒
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double x,y,angle;
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angle = second * PI / 21600;//时针的速度为PI/21600 (rad/s)
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x = 200 + 60 * Math.sin(angle);
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y = 165 - 60 * Math.cos(angle);
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g.setStroke( new BasicStroke(5,BasicStroke.CAP_BUTT,BasicStroke.JOIN_ROUND));
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g.setPaint(new GradientPaint(200,165,Color.red,260,165,Color.blue,true));
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g.drawLine(200, 165, (int)x, (int)y);
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}
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public void paint_MinutePointer(int second,Graphics2D g){//second表示当前时间的分针相对00:00:00走了多少秒
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double x,y,angle;
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angle = second * PI / 1800;//分针的速度为PI/1800 (rad/s)
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x = 200 + 80 * Math.sin(angle);
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y = 165 - 80 * Math.cos(angle);
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g.setStroke( new BasicStroke(3,BasicStroke.CAP_BUTT,BasicStroke.JOIN_ROUND));
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g.setPaint(new GradientPaint(200,165,Color.magenta,280,165,Color.blue,true));
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g.drawLine(200, 165, (int)x, (int)y);
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}
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public void paint_SecondPointer(int second,Graphics2D g){//second表示当前时间的秒针相对00:00:00走了多少秒
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double x,y,x1,y1,x2,y2,x3,y3,angle;
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double cos = 90 / Math.sqrt(8125);//90*90+5*5
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double sin = 5 / Math.sqrt(8125);
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angle = second * PI / 30;//时针的速度为PI/30 (rad/s)
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x = 200 + 95 * Math.sin(angle);
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y = 165 - 95 * Math.cos(angle);
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x1 = 200 + 20 * Math.sin(angle + PI);
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y1 = 165 - 20 * Math.cos(angle + PI);
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x2 = 200 + Math.sqrt(8125)* ( Math.sin(angle)*cos - Math.cos(angle)*sin ); //sin(a-b)
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y2 = 165 - Math.sqrt(8125)* ( Math.cos(angle)*cos + Math.sin(angle)*sin ); //cos(a-b)
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x3 = 200 + Math.sqrt(8125)* ( Math.sin(angle)*cos + Math.cos(angle)*sin ); //sin(a+b)
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y3 = 165 - Math.sqrt(8125)* ( Math.cos(angle)*cos - Math.sin(angle)*sin ); //cos(a+b)
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g.setStroke( new BasicStroke(2,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL));
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g.setPaint(new GradientPaint(180,165,Color.CYAN,295,165,Color.MAGENTA,true));
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g.drawLine((int)x1, (int)y1, (int)x, (int)y);
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g.drawLine((int)x2, (int)y2, (int)x, (int)y);
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g.drawLine((int)x3, (int)y3, (int)x, (int)y);
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}
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public double[] paint_Dot(double angle){
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double[] co = new double[2];
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co[0] = 115 * Math.cos(angle);//横坐标
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co[1] = 115 * Math.sin(angle);//纵坐标
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return co;
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}
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@SuppressWarnings("deprecation")
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private void showTime(){
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String date;
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int hour_temp = hour,min_temp = min,sec_temp = sec;
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sec_temp += 1 ;
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if(sec_temp >= 60)
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{
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sec_temp = 0;
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min_temp += 1 ;
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}
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if(min_temp>=60){
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min_temp=0;
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hour_temp+=1;
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}
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if(hour_temp < 10)
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strTime = "0" + hour_temp + ":";
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else
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strTime = "" + hour_temp + ":";
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if(min_temp < 10)
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strTime = strTime + "0" + min_temp + ":";
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else
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strTime = strTime + "" + min_temp + ":";
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if(sec < 10)
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strTime = strTime + "0" + sec_temp;
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else
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strTime = strTime + "" + sec_temp;
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//在窗体上设置显示时间
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date = " " + (now.getYear()+1900) + "年" + (now.getMonth()+1) + "月" + now.getDate() + "日 " + "星期" ;
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switch (now.getDay()) {
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case 1:
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date += "一";
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break;
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case 2:
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date += "二";
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break;
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case 3:
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date += "三";
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break;
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case 4:
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date += "四";
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break;
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case 5:
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date += "五";
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break;
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case 6:
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date += "六";
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break;
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case 7:
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date += "日";
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break;
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}
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date += " CST"; //Chinese standard time
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strTime = " " + strTime;
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display.setText(strTime);
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display2.setText(date);
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}
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public static void main(String args[]){
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Clock c = new Clock();
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c.showUI();
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JFrame f = new JFrame("yunyaniu");
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Image img=Toolkit.getDefaultToolkit().getImage("image/logo小.jpg");//窗口图标
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f.setIconImage(img);
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f.setSize(400,420);
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f.setResizable(false);
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f.add(c, BorderLayout.CENTER);
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f.setLocationRelativeTo(null);
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f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
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f.setVisible(true);
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}
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}
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@ -0,0 +1,158 @@
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package leo.class06_09;
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import com.sun.org.apache.regexp.internal.REUtil;
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import java.util.HashMap;
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/**
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* @author Leo
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* @ClassName CopyListWithRandom
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* @DATE 2020/12/4 9:22 上午
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* @Description
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* every node have two pointer,it's next and random
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* copy they and return new node
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*/
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public class CopyListWithRandom {
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static class Node {
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public int value;
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public Node next;
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public Node rand;
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public Node(int v) {
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this.value = v;
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}
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}
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public static Node copyRandomNodeByMap(Node head) {
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if (head == null) {
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return null;
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}
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HashMap<Node, Node> map = new HashMap<>();
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Node cur = head;
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while (cur != null) {
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map.put(cur, new Node(cur.value));
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cur = cur.next;
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}
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cur = head;
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while (cur != null) {
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map.get(cur).next = map.get(cur.next);
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map.get(cur).rand = map.get(cur.rand);
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cur = cur.next;
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}
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return map.get(head);
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}
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public static Node copyRandomNode(Node head) {
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if (head == null) {
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return null;
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}
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Node cur = head;
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Node next;
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while (cur != null) {
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next = cur.next;
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cur.next = new Node(cur.value);
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cur.next.next = next;
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cur = next;
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}
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cur = head;
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Node curCopy = null;
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while (cur != null) {
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next = cur.next.next;
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curCopy = cur.next;
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curCopy.rand = cur.rand == null ? null : cur.rand.next;
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cur = next;
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}
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cur = head;
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Node copyHead = head.next;
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while (cur != null) {
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curCopy = cur.next;
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next = cur.next.next;
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cur.next = next;
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curCopy.next = next != null ? next.next : null;
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cur = next;
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}
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return copyHead;
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}
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public static void main(String[] args){
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int testTime = 1000;
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int maxSize = 30;
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int range = 100;
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System.out.println("Start!");
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for (int i = 0; i < testTime; i++) {
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Node node = randomNode(maxSize, range);
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Node headMap = copyRandomNodeByMap(node);
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Node head = copyRandomNode(node);
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Node curNode = node;
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Node curHeadMap = headMap;
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Node curHead = head;
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while (curNode != null) {
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if (curHead.value!=curNode.value|| curHeadMap.value!=curNode.value) {
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System.out.println("value");
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System.out.println(curNode.value);
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System.out.println(curHead.value);
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System.out.println(curHeadMap.value);
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System.out.println("fuck");
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break;
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}
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if (curNode.rand != null) {
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if (curHead.rand.value!=curNode.rand.value|| curHeadMap.rand.value!=curNode.rand.value) {
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System.out.println("rand");
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System.out.println(curNode.rand.value);
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System.out.println(curHead.rand.value);
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System.out.println(curHeadMap.rand.value);
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System.out.println("rand fuck");
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break;
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}
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}
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curNode = curNode.next;
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curHead = curHead.next;
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curHeadMap = curHeadMap.next;
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}
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}
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System.out.println("End!");
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}
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public static Node randomNode(int maxSize, int range) {
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Node head = new Node(randomInt(range));
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Node cur = head;
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int size = (int) (maxSize * Math.random() + 1);
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for (int i = 0; i < size; i++) {
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cur.next = new Node(randomInt(range));
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cur = cur.next;
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}
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cur = head;
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while (cur != null && size > 0) {
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double rand = Math.random();
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if (rand < 0.5) {
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double v = size * Math.random() + 1;
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Node temp = head;
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for (int i = 0; i < v; i++) {
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temp = temp.next;
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size--;
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}
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cur.rand = temp;
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}
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cur = cur.next;
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}
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return head;
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}
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public static int randomInt(int range) {
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return (int) ((range * Math.random() + 1) - (range * Math.random() + 1));
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}
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}
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