剑指 Offer 58 - II. 左旋转字符串

花里胡哨的，真无语

class Solution {
public:
    string reverseLeftWords(string s, int n) {
        vector<char> a;
        for(int i = 0 ; i<s.size();i++){
            if(i>=n)  a.push_back(s[i]);
        }
        for(int i = 0 ; i<s.size();i++){
            if(i<n)  a.push_back(s[i]);
        }
  
        string result(a.begin(),a.end());
        return  result;
    }
};

class Solution(){
public:
    string reverseLeftWords(string s,int n){
        reverse(s.begin(),s.begin()+n)
        reverse(s.begin()+n,s.end())
        reverse(s.begin(),s.end())
        return s;
    }
}