【leetcode刷题】T72-反转字符串

输入：["h","e","l","l","o"]
输出：["o","l","l","e","h"]

输入：["H","a","n","n","a","h"]
输出：["h","a","n","n","a","H"]

class Solution(object):
    def reverseString(self, s):
        """
        :type s: List[str]
        :rtype: None Do not return anything, modify s in-place instead.
        """
        length = len(s)
        if length < :
            return s
        for i in range(len(s) // ):
            s[i], s[length-1-i] = s[length-1-i], s[i]

class Solution {
public:
    void reverseString(vector<char>& s) {
        int length=s.size();
        char tmp;
        for(int i=; i<length/; i++){
            tmp = s[i];
            s[i] = s[length-1-i];
            s[length-1-i] = tmp;
        }
    }
};