LeetCode 344. 反转字符串

 

思路#

方法：首尾双指针#

class Solution {
public:
    void reverseString(vector<char>& s) {
        int i = 0, j = s.size()-1;
        while(i < j) {
            swap(s[i], s[j]);
            ++i;
            --j;
        }
    }
};