def demo(v,n):
assert 0<v<10,'v must between 1 and 9'
assert type(n)==int,'n must be integer'
result,t=0,0
for i in range(n):
t=t*10+v
result+=t
return result
print(demo(3,4))
计算a+aa+.............+aaaa..a的和,其中a为小于10的自然数
猜你喜欢
转载自blog.csdn.net/qq_38452951/article/details/109057515
今日推荐
周排行