Java冒泡排序

public class BubbleSort {
    static int min;
    public static void main(String[] args) {
        int[] a = new int[5];
        a[0] = (int) (Math.random() * 100);
        a[1] = (int) (Math.random() * 100);
        a[2] = (int) (Math.random() * 100);
        a[3] = (int) (Math.random() * 100);
        a[4] = (int) (Math.random() * 100);
        
        System.out.println("数组中的各个随机数是:");
        for (int i = 0; i < a.length; i++) 
            System.out.println(a[i]);
        
        for(int i=0;i<a.length;i++)
        //外循环控制循环次数，n-1次
        {
            for(int j=0;j<a.length-i-1;j++)
        //内循环控制每次比较的次数，每次比较n-i次
            {
                if(a[j]>a[j+1])
                {
                    int temp=0;
                    temp = a[j+1];
                    a[j+1] = a[j];
                    a[j] = temp;
                }
            }
        }
        
        System.out.println("数组中的正序排列是:");
        for (int i = 0; i < a.length; i++) 
            System.out.println(a[i]);
    }
}