Java实现的冒泡排序

public class  BubbleSort
{
    public static void main(String[] args) 
    {
        int[] a = {1,9,6,5,8,3,6,2,5,4};
        bubbleSort(a);
        print(a);
    }

    private static void bubbleSort(int[] a)
    {
        int tmp;

        for(int i=a.length-1; i>1; i--)
        {
            for(int j=0; j<i; j++)
            {
                if(a[j] < a[j+1])
                {
                    tmp = a[j];
                    a[j] = a[j+1];
                    a[j+1] = tmp;
                }
            }
        }
    }

    private static void print(int[] a)
    {
        for(int i=0; i<a.length; i++)
        {
            System.out.print(a[i] + " ");
        }
        System.out.println();
    }
}