python 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:\n    def separateDigits(self, nums: List[int]) -> List[int]:\n        lst=[]\n        for i in nums:\n            t=[]\n            while(i>0):\n                d=i%10\n                t.append(d)\n                i=i//10\n            t.reverse()\n            lst.extend(t)\n        return lst\n```
['Python3']