LeetCode2109:向字符串添加空格

一、题目

二、题解

class Solution {
public:
    string addSpaces(string s, vector<int>& spaces) {
        int position = 0;
        std::string res;
 
        for (int i = 0; i < s.length(); ++i) {
            if (position < spaces.size() && i == spaces[position]) {
                ++position;
                res.push_back(' ');
            }
            res.push_back(s[i]);
        }
        return res;
    }
};