Easy JS 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```javascript []\n/**\n * @param {number[]} nums\n * @return {number[]}\n */\nvar separateDigits = function(nums) {\n    let arr = []\n    for(let i =0;i<nums.length;i++){\n         let odi = nums[i].toString().split("");\n        for (let j = 0; j < odi.length; j++) {\n            arr.push(parseInt(odi[j])); \n        }\n    }\nreturn arr\n\n};\n```
['JavaScript']