Python string Sorting method

In this paper, we briefly summarize the method of Python's implementation of string ordering, which is a very practical technique in Python program design. Share it for everyone's reference. Here's how:

In general, it is quite troublesome to sort a string in Python:

One, the string type in Python is not allowed to change elements directly. You must first place the string you want to sort in a container, such as list.

Second, the sort () function of the list container in Python does not return a value.

So it often takes several lines of code to sort strings in Python.

The implementation method is as follows:

>>> s = "string" >>> L = List (s) >>> L.sort () >>> s = "". Join (L) >>> s ' Ginrst '

Programmers who have just been transferred from languages such as C + + will often feel very accustomed to it, because in C/s + + These are all things that can be done with a single line of statements. Therefore, here is a simple method for sorting strings.

The implementation code is as follows:

>>> s = "string" >>> s = "". Join ((Lambda x: (X.sort (), x) [1]) (list (s))) >>> s ' Ginrst '

It's a little bit hard to understand because of the lambda, but it's better to get it figured out.

Hopefully this article will help you with Python programming.

