Java实现 LeetCode 344 反转字符串

public static void reverseString(char[] s) {
        for(int i = 0;i < s.length/2; i++){
            char a;
            a = s[i];
            s[i] = s[s.length-1-i];
            s[s.length-i-1] = a;
        }
    }