第八十九题

题目

#!/usr/bin/python
# -*- coding: UTF-8 -*-

while True:
    num = int(input('plaese input the correct number: '))
    i = num // 1000
    if i <= 9 and i>=1:
        break

a = [0] * 4
a[0] = i
a[1] = (num - i * 1000) // 100
a[2] = (num-a[0]*1000-a[1]*100)//10
a[3] = num % 10

for i in range(4):
    a[i] = (a[i] + 5) % 10

a[0],a[3] = a[3],a[0]
a[1],a[2] = a[2],a[1]

第八十九题

原文：https://www.cnblogs.com/lovely-bones/p/11668013.html