Python Easy Solution
\nclass Solution:\n    def getConcatenation(self, nums: List[int]) -> List[int]:\n        n=len(nums)\n        l=[]\n        for i in range(0,n):\n            l
```\nclass Solution:\n    def getConcatenation(self, nums: List[int]) -> List[int]:\n        n=len(nums)\n        l=[]\n        for i in range(0,n):\n            l.insert(i,nums[i])\n            l.insert(i+n,nums[i])\n        return l\n```
['Array', 'Python']