#228 Summary Ranges

    vector<string> summaryRanges(vector<int>& nums) {
        vector<string> result;

        for (int i = 0; i < nums.size(); ++i) {
            int start = nums[i];

            while (i + 1 < nums.size() && nums[i] + 1 == nums[i + 1]){
                ++i;
            }

            if (start == nums[i])
                result.push_back(to_string(start));
            else
                result.push_back(to_string(start) + "->" + to_string(nums[i]));
        }

        return result;
    }