4 liner easiest approach and explanation
\nclass Solution {\npublic:\n    string reverseStr(string s, int k) {\n        for(int i=0;i<=s.size();i+=2*k){\n            if(i+k<=s.size())reverse(s.begin()+
```\nclass Solution {\npublic:\n    string reverseStr(string s, int k) {\n        for(int i=0;i<=s.size();i+=2*k){\n            if(i+k<=s.size())reverse(s.begin()+i,s.begin()+i+k); //this will reverse from index i to i+k and next after one iteration i increments by i+2*k ignoring next k elements\n            else reverse(s.begin()+i,s.end()); //this reverses the last few elemnts which are less than k\n        }\n        return s;\n    }\n};\n```\n***i hope you understood my approach ,kindly upvote and feel free to ask any query from any line***
['String', 'C']