文件数据的处理

两个文件：data1.txt和data2.txt，两个文件中都有很多数字，用空格隔开。如：

45 78 85 45 63 21 47 86

运行程序，计算这两个文件中数字的交集，并且排好序，存放在jiao.txt中；计算这两个文件中数字的并集，并且排好序，存放在bing.txt中。

-File data processing two files: data1.txt and data2.txt, two files have a lot of numbers, separated by spaces. Such as: 4,578,854,563,214,786 run the program, calculate the intersection of two file numbers, and sorted, stored in jiao.txt in　calculate the numbers of these two files and sets, and sorted , stored in bing.txt in.