C# Easy and fast solution
Code\n\npublic class Solution {\n    public int[] SeparateDigits(int[] nums) {\n        List<int> tem = new List<int>();\n        foreach (int fg in nums)\n    
# Code\n```\npublic class Solution {\n    public int[] SeparateDigits(int[] nums) {\n        List<int> tem = new List<int>();\n        foreach (int fg in nums)\n        {\n            string inputString = fg.ToString();\n            for (int i = 0; i < inputString.Length; i++)\n            {\n                int digit = inputString[i] - \'0\';\n                tem.Add(digit);\n            }\n        }\n        return tem.ToArray();        \n    }\n}\n```
['C#']