> For the complete documentation index, see [llms.txt](https://imhuay.gitbook.io/studies/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://imhuay.gitbook.io/studies/algorithms/problems/2022/04/niu-ke-0089-jian-dan-zi-fu-chuan-bian-xing.md).

# 字符串变形

![last modify](https://img.shields.io/static/v1?label=last%20modify\&message=2022-10-14%2014%3A59%3A33\&color=yellowgreen\&style=flat-square) [![](https://img.shields.io/static/v1?label=\&message=%E7%AE%80%E5%8D%95\&color=yellow\&style=flat-square)](https://imhuay.gitbook.io/studies/algorithms/problems/2022/04/pages/R5NyOzkn3qAZy7wCx1pS#简单) [![](https://img.shields.io/static/v1?label=\&message=%E7%89%9B%E5%AE%A2\&color=green\&style=flat-square)](https://imhuay.gitbook.io/studies/algorithms/problems/2022/04/pages/R5NyOzkn3qAZy7wCx1pS#牛客) [![](https://img.shields.io/static/v1?label=\&message=%E6%A8%A1%E6%8B%9F\&color=blue\&style=flat-square)](https://imhuay.gitbook.io/studies/algorithms/problems/2022/04/pages/R5NyOzkn3qAZy7wCx1pS#模拟)

> [字符串变形\_牛客题霸\_牛客网](https://www.nowcoder.com/practice/c3120c1c1bc44ad986259c0cf0f0b80e)

**问题简述**

```
对于一个长度为 n 字符串，我们需要对它做一些变形。
首先这个字符串中包含着一些空格，就像"Hello World"一样，然后我们要做的是把这个字符串中由空格隔开的单词反序，同时反转每个字符的大小写。
比如"Hello World"变形后就变成了"wORLD hELLO"。
```

**思路**

* 按题意模拟即可；

<details>

<summary><strong>Python</strong></summary>

```python
class Solution:
    def trans(self , s: str, n: int) -> str:
        
        ss = s.split(' ')[::-1]
        for i in range(len(ss)):
            ss[i] = ''.join([c.upper() if c.islower() else c.lower() for c in ss[i]])
        
        return ' '.join(ss)
```

</details>