创建一个长度为10(随机长度)的数组,并随机赋值,然后通过冒泡排序(降序).

import java.util.Arrays;
import java.util.Random;

public class Test11 {
	public static void main(String[] args) {
		int[] arr = RandomArray();
		System.out.println(Arrays.toString(arr));
	//		RandomArray();
		sort(arr);
		System.out.println(Arrays.toString(arr));
}
	private static int[] RandomArray(){
		int n = new Random().nextInt(10); //获取随机n
//		System.out.println(n);
		int[] arr =new int[10];    //随机长度的数组
		for (int i = 0; i < arr.length; i++) {
			arr[i] = new Random().nextInt(1000);//数组元素取值范围
	
		}
		return arr;
	}
	
	private static void sort(int[] a){
		for (int i = 0; i < a.length; i++) {
			for (int j = a.length -1;j>i;j--) {
				if(a[j]>a[j-1]){
					int temp =a[j];
					a[j] =	a[i];
					a[i] = temp;
				}
				
			}
			
		}
	}
	}