冒泡排序

    public static <T extends Comparable<T>> void bubbleSort(T[] arr){

        for (int i=0;i<arr.length-1;i++){
            for (int j=0;j<arr.length-i-1;j++){

                if (arr[j].compareTo(arr[j+1])>0){

                    T temp = arr[j];
                    arr[j] = arr[j+1];
                    arr[j+1] =temp;
                }
            }
        }
    }