## 题目描述 编写一个函数，其作用是将输入的字符串反转过来。输入字符串以字符数组 s 的形式给出。 不要给另外的数组分配额外的空间，你必须原地修改输入数组、使用 O(1) 的额外空间解决这一问题。 ## 示例 **示例 1:** **输入:** s = ["h","e","l","l","o"] **输出:** ["o","l","l","e","h"] **示例 2:** **输入:** s = ["H","a","n","n","a","h"] **输出:** ["h","a","n","n","a","H"] ## 约束条件 1 <= s.length <= 105 s[i] 都是 ASCII 码表中的可打印字符 ## LeetCode 链接 https://leetcode.cn/problems/reverse-string/