to_string(num) kro fir insert as str[i]-'0' loop mein itna hee :D
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```cpp []\nclass Solution {\npublic:\n    vector<int> separateDigits(vector<int>& nums) {\n\n        vector<int>ans;\n\n        string str;\n        for(int i=0;i<nums.size();i++)\n        {\n            str=to_string(nums[i]);\n            \n            for(int i=0;i<str.length();i++)\n            {\n                ans.push_back(str[i]-\'0\');\n            }\n            \n            \n        }\n        return ans;\n        \n    }\n};\n```
['C++']