冒泡排序

冒泡排序算法

public class BubbleSort {
    public void bubbleSort(Integer[] arr) {
        for (int i = 0; i < arr.length; i++) {
            boolean flag = false;
            for (int j = 0; j < arr.length - i - 1; j++) {
                if (arr[j] > arr[j + 1]) {
                    int temp;
                    temp = arr[j + 1];
                    arr[j + 1] = arr[j];
                    arr[j] = temp;
                    flag = true;
                }
            }
            if (!flag) break;
        }
    }


    public static void main(String[] args) {
        Integer arr[] = {2, 4, 7, 6, 8, 5, 9};
        BubbleSort bubbleSort = new BubbleSort();
        bubbleSort.bubbleSort(arr);
        System.out.println(Arrays.toString(arr));
    }
}