def reverse(s): return reverse(s[1:])+s(0)什么意思
时间: 2024-02-18 18:02:56 浏览: 30
这是一个递归函数,用于将字符串 s 翻转。具体来说,函数的实现是将字符串的第一个字符移动到最后,然后递归调用函数来翻转剩余的子字符串。
但是这段代码有一个问题,递归没有结束条件,会导致无限递归,最终导致栈溢出错误。正确的实现应该是加上结束条件,当输入字符串为空或只有一个字符时结束递归。修改后的代码如下:
```
def reverse(s):
if len(s) <= 1:
return s
return reverse(s[1:]) + s[0]
```
相关问题
def reverse_string(s): return s[::-1]
As an AI language model, I do not have the context to identify the problem this code is trying to solve. However, I can tell you that this function takes a string as an argument and returns the reversed version of that string using the slicing technique in Python.
In Python, strings can be sliced using the syntax s[start:stop:step], where start is the starting index of the slice, stop is the stopping index of the slice, and step is the step size for the slice. If any of these values are not specified, they default to their default values, which are 0 for start, len(s) for stop, and 1 for step.
In this function, the slicing syntax s[::-1] is used to reverse the string. The start and stop values are omitted, which means the slice will start from the beginning and go all the way to the end of the string. The step value is -1, which means the slice will go from the end of the string to the beginning, effectively reversing the string.
def reverse(n):是什么、
这是一个函数的定义,函数名为reverse,它接受一个参数n。函数的作用是将n反转后返回,例如n=123时,函数返回321。以下是一个简单的实现示例:
```
def reverse(n):
return int(str(n)[::-1])
```
这个函数先将n转换为字符串,然后使用切片操作[::-1]将字符串反转,最后再将反转后的字符串转换为整数并返回。
相关推荐
![pdf](https://img-home.csdnimg.cn/images/20210720083512.png)
![pdf](https://img-home.csdnimg.cn/images/20210720083512.png)
![zip](https://img-home.csdnimg.cn/images/20210720083736.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)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)