2、冒泡排序

public class Sort {
    public static void main(String[] args) {
        int[] arr = RandomUtil.randomInts(100);
        System.out.println(JSONObject.toJSON(arr));
        System.out.println();

        quickSort(arr, 0, arr.length - 1);
        System.out.println(JSONObject.toJSON(arr));
    }

    /**
     * 冒泡排序
     *
     * @param arr
     */
    private static void bubbleSort(int[] arr) {
        System.out.println(JSONObject.toJSON(arr));
        System.out.println();

        for (int i = 0; i < arr.length - 1; i++) {
            int temp = 0;
            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(JSONObject.toJSON(arr));
    }