1）编写一个程序来获取以下输出：
1 2 3 4 5 5 4 3 2 1
no = 1
top = 5
direction = 1
while no>0:
print(no,end= ' ')
if no == top:
print(no,end=' ')
direction = -1
no = no + direction
输出：
1 2 3 4 5 5 4 3 2 1
使用随机模块：
2) 猜数字游戏：
程序将一直运行直到我们猜出数字
import random
system_no = random.randint(1,20)
while true:
guess = int(input("enter the no. "))
if guess == system_no:
print("hurray! i got the number!! ")
break
elif guess > system_no:
print("your guess is too high! ")
else:
print("your guess is too low! ")
输出：
enter the no. 5 your guess is too low! enter the no. 7 your guess is too low! enter the no. 10 your guess is too low! enter the no. 12 hurray! i got the number!!
3) 数字中最大的数字：
no = int(input("enter no. "))
max_no = 0
while no>0:
rem = no%10
if rem>max_no:
max_no = rem
no//=10
print(max_no)
输出：
enter no. 452 5
所以在 452 中，5 是数字中最大的数字。
任务：
1) 查找数字中最小的数字：
no = int(input("enter no. "))
min_no = 9
while no>0:
rem = no%10
if rem
输出：
enter no. 452
2
2) 判断所有数字是否相等
no=input("enter the no. ")
num=1
while num
输出：
1)Enter the no. 4444
All digits are equal
2)Enter the no. 46562
Not equal
