冒泡排序

public static void bubbleSort(int[] arr){
        for (int i = 0; i < arr.length; i++) {
            for (int j = 0; j < arr.length - 1 - i; j++) {
                if(arr[j] > arr[j+1]){
                    int temp = arr[j];
                    arr[j] = arr[j+1];
                    arr[j+1] = temp;
                }
            }
        }
    }