Python [Leetcode 344]Reverse String

题目描述：

Write a function that takes a string as input and returns the string reversed.

Example:
Given s = "hello", return "olleh".

解题思路：

见代码。

代码如下：

class Solution(object):
    def reverseString(self, s):
        """
        :type s: str
        :rtype: str
        """
        t = list(s)
        l = len(t)
        for i, j in zip(range(l - 1, 0, -1), range(l // 2)):
            t[i], t[j] = t[j], t[i]
            
        return ''.join(t)