LeetCode：344.反转字符串

跟着carl学算法，本系列博客仅做个人记录，建议大家都去看carl本人的博客，写的真的很好的！
代码随想录
LeetCode：344.反转字符串

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 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"

双指针，秒了

	public void reverseString(char[] s) {
        int i = 0;
        int j = s.length - 1;
        while(i < j){
            char temp = s[i];
            s[i] = s[j];
            s[j] = temp;
            i++;
            j--;
        }
    }