Java随机数组和已排序的随机数组绘图

叁歲伎倆 2021-07-24 22:37 352阅读 0赞

**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

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70][]

**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

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70 1][]

**三 参考代码**

[https://gitee.com/cakin24/Algorithm/tree/master/src/main/java/MyDraw][https_gitee.com_cakin24_Algorithm_tree_master_src_main_java_MyDraw]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70]: /images/20210724/729f1725bd6d4a0283748fff2297c06a.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70 1]: /images/20210724/654c8eb15bcd40f3b518a41068a6d4a5.png
[https_gitee.com_cakin24_Algorithm_tree_master_src_main_java_MyDraw]: https://gitee.com/cakin24/Algorithm/tree/master/src/main/java/MyDraw