冒泡排序

public class MM {public static void main(String[] args) {
    int[] arr = new int[] { 2, 8, 7, 9, 4, 1, 5, 0 };
    bubbleSort(arr);
}

    public static void bubbleSort(int[] arr) {
        //控制多少轮
        for (int i = 1; i < arr.length; i++) {
            //控制每一轮的次数
            for (int j = 0; j <= arr.length -1 - i; j++) {
                if (arr[j] > arr[j + 1]) {
                    int temp;
                    temp = arr[j];
                    arr[j] = arr[j + 1];
                    arr[j + 1] = temp;
                }
            }
        }
        System.out.println(Arrays.toString(arr));

    }
}