题解 | #密码游戏#
密码游戏
https://www.nowcoder.com/practice/36641ab168664384aff798ba7ce34bc1
import sys s = input() num = [ int(i) for i in s] # 转换成 数字列表 num = [ (i + 3) % 9 for i in num ] # 换算 num[0], num[2] = num[2], num[0] #交换 num[1], num[3] = num[3], num[1] b = '' for i in num: b=f'{b}{i}' #转换成 数据 print(f"{int(b):0>4}") # 补零