冒泡排序

    public static void bubbleSort(int[] arr){
        int temp;
        for (int i = 0; i < arr.length - 1; i++) {
            for (int j = 0; j < arr.length - 1 - i; j++) {
                if (arr[j] > arr[j + 1]) {
                    temp = arr[j];
                    arr[j] = arr[j + 1];
                    arr[j + 1] = temp;
                }
            }
            System.out.println("第"+ (i+1) +"趟排序为" + Arrays.toString(arr));
        }
    }