Simple C++ Solution
Intuition\n Describe your first thoughts on how to solve this problem. \n\n# Approach\n Describe your approach to solving the problem. \n\n# Complexity\n- Time 
# Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\n\n# Approach\n<!-- Describe your approach to solving the problem. -->\n\n# Complexity\n- Time complexity:\n<!-- Add your time complexity here, e.g. $$O(n)$$ -->\n\n- Space complexity:\n<!-- Add your space complexity here, e.g. $$O(n)$$ -->\n\n# Code\n```\nclass Solution {\npublic:\n    vector<int> separateDigits(vector<int>& nums) {\n        vector<int> ans;\n        for(auto a: nums){\n            vector<int> temp;\n            while(a > 0){\n                temp.push_back(a%10);\n                a = a/10;\n            }\n            for(int i = temp.size()-1; i >= 0; --i){\n                ans.push_back(temp[i]);\n            }\n        }\n        return ans;\n    }\n};\n```
['C++']