#字符串 #反转字符串 II

reverse-string-ii.cpp

class Solution {
public:
    string reverseStr(string s, int k) {
        int n = 0;
        for (int i = 0; i < s.size(); i += (2*k)) {
            if (i + k <= s.size())
                reverse(s.begin() + i, s.begin() + i + k);
            else 
                reverse(s.begin() + i, s.end());  
        }
        return s;
    }
};