✔️ 100% beats || Easy Pizzy || O(n) || simplest ✔️
Code
# Code\n```python3 []\nclass Solution:\n    def separateDigits(self, nums: List[int]) -> List[int]:\n        ans = []\n        n = len(nums)\n        for i in range(n):\n            s = str(nums[i])\n            for c in s:\n                ans.append(int(c))\n        return ans\n```
['Python3']