一 随机数组绘图

1 代码

package MyDraw;

import common.StdDraw;
import common.StdRandom;

/**
* Copyright (C), 2020-2020, XXX有限公司
* FileName: MyDraw
* Author:   cakin
* Date:     2020/1/10
* Description: 随机数组绘图
*/
public class MyDraw {
    public static void main( String[] args ) {
        drawRandomAarray();
    }

    public static void drawRandomAarray(){
        int N = 50;
        double[] a = new double[N];
        for(int i = 0;i<N;i++){
            a[i] = StdRandom.random();
        }
        for(int i=0;i<N;i++){
            double x = 1.0*i/N;
            double y = a[i]/2.0;
            double rw=0.5/N;
            double rh = a[i]/2.0;
            StdDraw.filledRectangle(x,y,rw,rh);
        }
    }
}

2 测试

二 已排序的随机数组绘图

1 代码

package MyDraw;

import common.StdDraw;
import common.StdRandom;
import java.util.Arrays;

/**
* Copyright (C), 2020-2020, XXX有限公司
* FileName: MyDraw
* Author:   cakin
* Date:     2020/1/10
* Description: 随机排序数组绘图
*/
public class MyDraw {
    public static void main( String[] args ) {
        //drawFunc();
        //drawRandomAarray();
        drawRandomSortedAarray();
    }

    public static void drawRandomSortedAarray(){
        int N = 50;
        double[] a = new double[N];
        for(int i = 0;i<N;i++){
            a[i] = StdRandom.random();
        }
        Arrays.sort(a);
        for(int i=0;i<N;i++){
            double x = 1.0*i/N;
            double y = a[i]/2.0;
            double rw=0.5/N;
            double rh = a[i]/2.0;
            StdDraw.filledRectangle(x,y,rw,rh);
        }
    }
}

2 测试

三 参考代码

https://gitee.com/cakin24/Algorithm/tree/master/src/main/java/MyDraw