java生成随机数数组并打印数组

package day06;


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

public class MethodDemo01 {
    public static void main(String[] args) {
    int[] a=generateArray(10,100);//生成一个随机数数组
        printArray(a);//打印数组
        Arrays.sort(a);//数组排序
        System.out.println("数组已排序");
/*        for (int i = 0; i < a.length; i++) {
            System.out.println(a[i]);//打印数组
        }*/
        printArray(a);
        System.out.println("数组遍历结束");
    }
    public static int[] generateArray(int len,int max){//生成一个随机数组
        Random rand=new Random();
        int[] arr=new int[len];
        for (int i = 0; i < arr.length; i++) {
            arr[i]= rand.nextInt(max+1);
        }
        return arr;
    }
    public static void printArray(int[] a){//打印数组内容
        System.out.println("数组的个数为"+a.length);
        for (int i = 0; i < a.length; i++) {
            System.out.print(a[i]);
            if(i<a.length-1){
                System.out.print(",");
            }
        }
        System.out.println();
    }
}