假设要输入一组数进行快速排序：

    public static void main(String[] args) {
        Digui digui = new Digui();
        System.out.println("请输入一行数字，用逗号隔开：");
        Scanner scanner = new Scanner(System.in);
        String[] split = scanner.next().split(",");
        int[] a = new int[split.length];
        for(int i=0;i<split.length;i++){
            a[i] = Integer.parseInt(split[i]);
        }
        System.out.println("排序前：\n"+ Arrays.toString(a));
        digui.quickSort(a, 0, a.length-1);
        System.out.println("排序后：\n" + Arrays.toString(a));
    }

运行结果：