添加pom.xml
<!--算法第4版的标准库-->
<dependency>
<groupId>edu.princeton.cs</groupId>
<artifactId>algs4</artifactId>
<version>1.0.3</version>
</dependency>
代码
public class test2 {
public static void draw1(){
StdDraw.setPenRadius(0.05);
StdDraw.setPenColor(StdDraw.BLUE);
StdDraw.point(0.5, 0.5);
}
public static void draw2() throws InterruptedException {
int n=500;
StdDraw.setXscale(0,n);
StdDraw.setYscale(0,n*n);
StdDraw.setPenRadius(.01);
for(int i=1;i<=n;i++){
if (i%2==0){
StdDraw.setPenColor(StdDraw.RED);
}else {
StdDraw.setPenColor(StdDraw.GREEN);
}
StdDraw.point(i,i);
Thread.sleep(10);
if (i%2==0){
StdDraw.setPenColor(StdDraw.YELLOW);
}else {
StdDraw.setPenColor(StdDraw.BLUE);
}
StdDraw.point(i,i*i);
Thread.sleep(20);
if (i%2==1){
StdDraw.setPenColor(StdDraw.LIGHT_GRAY);
}else {
StdDraw.setPenColor(StdDraw.GREEN);
}
StdDraw.point(i,i*Math.log(i));
}
}
public static void draw3(String tips,int tx,double radius,int multiple) throws InterruptedException {
int i=0;
for (double t = tx; true; t += 1.5) {
System.out.println(tips);
double x = Math.sin(t);
double y = Math.cos(t);
if (i%2==0){
StdDraw.setPenColor(StdDraw.RED);
}else {
StdDraw.setPenColor(StdDraw.GREEN);
}
i++;
Thread.sleep(1);
StdDraw.filledCircle(multiple*x,multiple*y, radius);
if (i%2==0){
StdDraw.setPenColor(StdDraw.YELLOW);
}else {
StdDraw.setPenColor(StdDraw.BLUE);
}
StdDraw.filledCircle(multiple*-x,multiple*-y, radius);
StdDraw.show();
StdDraw.pause(20);
}
}
public static void main(String[] args) {
StdDraw.setScale(-2,2);
StdDraw.enableDoubleBuffering();
StdDraw.clear(Color.BLACK);
Thread thread1=new Thread(new Runnable() {
@Override
public void run() {
try {
draw3("第一个",0,0.08,1);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
});
Thread thread2=new Thread(new Runnable() {
@Override
public void run() {
try {
draw3("第二个",1,0.1,2);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
});
Thread thread3=new Thread(new Runnable() {
@Override
public void run() {
StdDraw.setPenRadius(0.05);
StdDraw.setPenColor(StdDraw.BLUE);
StdDraw.point(0, 0);
}
});
thread1.start();
thread2.start();
thread3.start();
}
}
效果

2021-07-19 11-32-54屏幕截图.png
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