对无序数组进行排序

/**
 *  asc 升序
 *  desc 降序
 */
public class BubbleSort {
    public static void main(String[] args) {
        int[] a = new int[]{3, 5, 1, 43, 44, 2, 21, 44, 55, 77, 88, 33};
        BubbleSort(a,"asc");
        for (int i =0 ;i<a.length;i++)
            System.out.print(a[i] + " ");
    }
    public static int[] BubbleSort(int[] a,String c){
        int b;
        if("asc".equals(c))
        { for (int i = 0 ;i < a.length;i++)
            for (int l = 0;l < a.length;l++)
                if(a[i] < a[l])
                {
                    b = a[i];
                    a[i] = a[l];
                    a[l] = b;
                } }
                else if("desc".equals(c)){
            for (int i = 0 ;i < a.length;i++)
                for (int l = 0;l < a.length;l++)
                    if(a[i] > a[l])
                    {
                        b = a[i];
                        a[i] = a[l];
                        a[l] = b;
                    }
        }
        return a;
    }
}