字符串排序python
时间: 2023-09-02 21:12:56 浏览: 101
python 实现字符串排序
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在Python中,可以通过将字符串转换为列表,使用列表的sort()方法来对字符串进行排序。具体的实现方法如下:
```python
s = "string"
l = list(s)
l.sort()
s = "".join(l)
```
以上代码将字符串"s"转换为列表"l",然后使用sort()方法对列表进行排序,最后再将排序后的列表重新转换为字符串"s"。这样就实现了字符串的排序。结果为'ginrst'。
还可以使用lambda函数来实现更简洁的字符串排序方法:
```python
s = "string"
s = "".join((lambda x:(x.sort(),x)[1])(list(s)))
```
以上代码使用lambda函数将列表排序后直接转换为字符串。结果同样为'ginrst'。
另外,如果要对字符串列表进行排序,可以使用列表的sort()方法。例如,对以下字符串列表进行排序:
```python
list=["delphi","Delphi","python","Python","c ","C ","c","C","golang","Golang"]
list.sort() #按字典顺序升序排列
print("升序:",list)
list.sort(reverse=True) #按降序排列
print("降序:",list)
```
以上代码将字符串列表按照字典顺序升序排列,并打印结果。结果为['c', 'C', 'c ', 'C ', 'delphi', 'Delphi', 'python', 'Python', 'golang', 'Golang']。然后再按照降序排列,并打印结果。结果为['delphi', 'Delphi', 'python', 'Python', 'golang', 'Golang', 'c ', 'C ', 'c', 'C']。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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