d[i]=sum(list(map(int,str(i))))
时间: 2023-05-17 19:03:47 浏览: 40
这是一个计算数字 i 各位数之和的代码,其中 list(map(int,str(i))) 将数字 i 转换为字符串并将每个字符转换为整数,然后使用 sum() 函数计算它们的总和,最后将结果赋值给 d[i]。
相关问题
sum(list(map(int,list(str(i)))))==n
This is a Python expression that checks if the sum of the digits of a number i is equal to a given integer n.
Here's how it works:
1. `list(str(i))` converts the integer `i` into a string and then creates a list of its characters (digits).
2. `map(int, ...)` applies the `int` function to each character in the list, converting them back to integers.
3. `list(...)` creates a new list from the result of the `map` function.
4. `sum(...)` computes the sum of all the integers in the list.
5. The expression `sum(...) == n` checks if the sum is equal to the given integer `n`.
Overall, this expression can be used to check if a number `i` satisfies a certain condition, such as being a "Narcissistic number" (where the sum of the digits raised to the power of the number of digits is equal to the number itself).
n = int(input()) for i in range(n): ages=input() average_age = sum(list(str(ages))) / n print('%.2f' % average_age)有什么问题
这段代码有一个问题,即输入的年龄字符串应该先转换为整型数组,然后再计算平均值,而不是将字符串转换为字符列表并计算它们的总和。下面是修正后的代码:
```
n = int(input())
for i in range(n):
ages = list(map(int, input().split()))
average_age = sum(ages) / len(ages)
print('%.2f' % average_age)
```
此外,输入时应该用空格分隔不同的年龄,而不是连续输入多个年龄字符串。我希望以上内容能够帮助你理解和修改这段代码。
相关推荐
![pdf](https://img-home.csdnimg.cn/images/20210720083512.png)
![docx](https://img-home.csdnimg.cn/images/20210720083331.png)
![pdf](https://img-home.csdnimg.cn/images/20210720083512.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)