题目：某个通信公司采用公用电话传输数据，数据是4位数字的整数，在传送数据过程中是加密的，加密规则是：每位数字都加上5，然后用和除以10的余数代替该数字；再将第1位和第4位交换；第2位和第三位交换。-Title: a communications company to a public telephone transmission of data, data is the four-digit integer, in the process of transmission of data is encrypted, the encryption rules are: each digit plus 5, and then use the remainder divided by 10 instead ofthe figures　then 1 and 4 exchange　2 and the third exchange.