344.反转字符串

🥩递归

  

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

Accepted

478/478 cases passed (52 ms)

Your runtime beats 88.72 % of cpp submissions

Your memory usage beats 5.04 % of cpp submissions (20.4 MB)