java 冒泡排序

class Sort{
        public static void main(String [] args){
        int [] num = {1,4,7,2,8,3,5,9,6};

        num = arrSort(num);
        for(int i = 0; i < num.length; i++){
            System.out.print(num[i]);
            System.out.print(" ");
        }
    }

    public static int [] arrSort(int [] num){
        for(int i = 0; i < num.length-1; i++){
            for(int j = 0; j < num.length-1; j++){
                swap(j, num);
            }


        }
        return num;
    }

    public static void swap(int j, int [] num){
        int temp;
        if(num[j] > num[j+1]){
            temp = num[j];
            num[j] = num[j+1];
            num[j+1] = temp;
        }

    }


}